Silicone Foam
Silicone foam is the material of choice when temperature extremes, flame performance, or regulatory compliance are non-negotiable. It maintains a reliable compression seal from -100°F to over 400°F, resists UV and ozone without degradation, and carries the qualification credentials — USP Class VI, ISO 10993, UL94 V-0, FAR 25 — that commodity foams cannot. H-O Products carries the full range of silicone foam families, from industrial bun-stock MF Series to aerospace FST-rated RS-Series sponge and kSil™ V-0 performance gasketing, and converts them to customer specification.
BISCO® BF-1000 – Extra Soft
BISCO® BF-1000 is a highly compressible, extra soft closed cell silicone foam engineered for applications requiring low closure force and reliable long-term environmental sealing. Rated from −67°F to 392°F, BF-1000 delivers 2.4 psi compression force deflection at 25% deflection and achieves 1.70% compression set after 22 hours at 212°F, providing consistent seal integrity under minimal compressive load.
Key Properties
- Compression Force Deflection @ 25%: 2.4 psi
- Tensile Strength: 35 psi
- Elongation: ≥60%
- Compression Set: 1.70% (22 hrs @ 212°F, 50%)
- Density: 12 lb/ft³
- Recommended Service Temperature: −67°F to 392°F
BISCO® BF-2000 – Ultra Soft
BISCO® BF-2000 is an ultra soft, highly compressible closed cell silicone foam engineered for applications requiring the lowest possible closure force combined with reliable environmental sealing. Rated from −67°F to 392°F, BF-2000 delivers 1.0 psi compression force deflection at 25% and meets UL 94 V-0 and HF-1 flame standards, making it the softest grade in the BISCO cellular foam family.
Key Properties
- Compression Force Deflection @ 25%: 1.0 psi (6.9 kPa) typical; spec <1.7 psi (12 kPa)
- Tensile Strength: ≥20 psi (140 kPa)
- Elongation: ≥60%
- Compression Set: Tested per ASTM D1056 (22 hrs @ 212°F, 50%)
- Density: 11 lb/ft³ (175 kg/m³)
- Recommended Service Temperature: −67°F to 392°F
BISCO® HT-800 Medium
BISCO® HT-800 is a medium-firmness closed cell silicone foam engineered to combine the lightness of foam with the enhanced moisture sealing capability of sponge rubber. Rated from −67°F to 392°F, HT-800 delivers 9.7 psi compression force deflection at 25% and 2.4% compression set (22 hrs @ 212°F, 50%), supporting reliable long-term performance in demanding outdoor and industrial sealing applications.
Key Properties
- Compression Force Deflection @ 25%: 9.7 psi (67 kPa) typical; spec 6–14 psi (41–97 kPa)
- Compression Set: 2.4% typical; spec <5% (22 hrs @ 212°F, 50%)
- Density: 22 lb/ft³ (352 kg/m³) typical
- Water Absorption: 0.5%; spec <5%
- Thermal Conductivity: 0.076 W/m°K
- Recommended Service Temperature: −67°F to 392°F
BISCO® HT-820 Firm
BISCO® HT-820 is a firm closed cell silicone foam engineered for applications requiring enhanced durability, high closure force, and sealing performance comparable to traditional sponge rubber. Rated from −67°F to 392°F, HT-820 delivers 15.3 psi compression force deflection at 25% and 2.6% compression set (22 hrs @ 212°F, 50%), offering higher tear and tensile strength than lighter-grade BISCO foams.
Key Properties
- Compression Force Deflection @ 25%: 15.3 psi (106 kPa) typical; spec 12–20 psi (82–138 kPa)
- Compression Set: 2.6% typical; spec <5% (22 hrs @ 212°F, 50%)
- Density: 24 lb/ft³ (384 kg/m³) typical
- Water Absorption: 0.5%; spec <5%
- Thermal Conductivity: 0.09 W/m°K
- Recommended Service Temperature: −67°F to 392°F
BISCO® HT-840 Extra Firm
Short Description
BISCO® HT-840 is an extra firm closed cell silicone foam engineered for applications demanding the highest closure force, superior sealing capability, and maximum mechanical durability in the HT-800 series. Rated from −67°F to 392°F, HT-840 delivers 20.6 psi compression force deflection at 25% and 1.8% compression set (22 hrs @ 212°F, 50%), providing sponge-rubber-comparable performance in foam form.
Key Properties
- Compression Force Deflection @ 25%: 20.6 psi (142 kPa) typical; spec 16–26 psi (110–179 kPa)
- Compression Set: 1.8% typical; spec <5% (22 hrs @ 212°F, 50%)
- Density: 28 lb/ft³ (448 kg/m³) typical
- Water Absorption: 0.5%; spec <5%
- Thermal Conductivity: 0.09 W/m°K
- Recommended Service Temperature: −67°F to 392°F
BISCO® HT-870 Soft
BISCO® HT-870 is a soft, medium-density closed cell silicone foam engineered as a firmer and denser alternative to BF-1000, maintaining low closure force and high conformability while delivering enhanced sealing performance. Rated from −67°F to 392°F, HT-870 achieves 1.6% compression set (22 hrs @ 212°F, 50%) and meets UL 94 V-0 and HF-1 flame standards.
Key Properties
- Compression Force Deflection @ 25%: 3.8 psi (26 kPa) typical; spec 1–7 psi (7–48 kPa)
- Compression Set: 1.6% typical; spec <5% (22 hrs @ 212°F, 50%)
- Density: 15 lb/ft³ (240 kg/m³) typical
- Water Absorption: 0.5%; spec <10%
- Thermal Conductivity: 0.06 W/m°K
- Recommended Service Temperature: −67°F to 392°F
BISCO® MF1® Firm
BISCO® MF1® Firm is a firm-grade silicone foam cast into a block form with a density of 7.0 lb/ft³ and a compression force deflection range of 0.6–1.8 psi per ASTM D1056, designed for cushioning and sealing applications including passenger rail car seating. The material is rated for recommended constant use to 392°F and passes FMVSS302 for flame resistance. It is FDA compliant in accordance with 21 CFR 177.2600.
Key Properties
- Compression Force Deflection: 0.6–1.8 psi (ASTM D1056)
- Tensile Strength: 13.5 psi (ASTM D412)
- Elongation: 35% (ASTM D412)
- Compression Set, 22 Hours @ 212°F @ 50%: 1.5% (ASTM D1056)
- Density: 7.0 lb/ft³ (ASTM D1056)
- Recommended Constant Use: 392°F
BISCO® MF1® Medium
BISCO® MF1® Medium is a medium-grade silicone foam cast into a block form with a density of 6.0 lb/ft³ and a compression force deflection range of 0.4–1.5 psi per ASTM D1056, designed for cushioning and sealing applications including passenger rail car and aircraft seating. The material is rated for recommended constant use to 392°F and passes FMVSS302 for flame resistance. It is FDA compliant in accordance with 21 CFR 177.2600.
Key Properties
- Compression Force Deflection: 0.4–1.5 psi (ASTM D1056)
- Tensile Strength: 12.5 psi (ASTM D412)
- Elongation: 45% (ASTM D412)
- Compression Set, 22 Hours @ 212°F @ 50%: 1.5% (ASTM D1056)
- Density: 6.0 lb/ft³ (ASTM D1056)
BISCO® MF1® Soft
BISCO® MF1® Soft is a soft-grade silicone foam cast into a block form with a density of 5.0 lb/ft³ and a compression force deflection range of 0.2–1.2 psi per ASTM D1056, designed for cushioning, sealing, and shock and vibration management applications including passenger rail car seating. The material is rated for recommended constant use to 392°F and passes FMVSS302 for flame resistance. It is FDA compliant in accordance with 21 CFR 177.2600.
Key Properties
- Compression Force Deflection: 0.2–1.2 psi (ASTM D1056)
- Tensile Strength: 12.5 psi (ASTM D412)
- Elongation: 45% (ASTM D412)
- Compression Set, 22 Hours @ 212°F @ 50%: 1.5% (ASTM D1056)
- Density: 5.0 lb/ft³ (ASTM D1056)
- Recommended Constant Use: 392°F
BISCO® MS80®
BISCO® MS80® is a platinum-cured, open-cell silicone foam cast into a block form with a density of 5 lb/ft³ and a compression force deflection range of 0.2–1.2 psi per ASTM D1056, specifically engineered for life science applications. The material is rated for recommended constant use to 392°F and is compliant with FDA 21 CFR 177.2600. It is resistant to UV, ozone, sanitizers, and extreme temperatures.
Key Properties
- Compression Force Deflection: 0.2–1.2 psi (ASTM D1056)
- Tensile Strength: 12.5 psi (ASTM D412)
- Elongation: 45% (ASTM D412)
- Compression Set, 22 Hours @ 212°F @ 50%: 1.5% (ASTM D1056)
- Density: 5 lb/ft³ (ASTM D1056)
- Recommended Constant Use: 392°F
BISCO® MS96®
BISCO® MS96® is a platinum-cured, open-cell silicone foam cast into a block form with a density of 6 lb/ft³ and a compression force deflection range of 0.4–1.5 psi per ASTM D1056, specifically engineered for life science applications. The material is rated for recommended constant use to 392°F, passes low temperature flex at -67°F per ASTM D1056, and is compliant with FDA 21 CFR 177.2600. It is resistant to UV, ozone, sanitizers, and extreme temperatures.
Key Properties
- Compression Force Deflection: 0.4–1.5 psi (ASTM D1056)
- Tensile Strength: 12.5 psi (ASTM D412)
- Elongation: 45% (ASTM D412)
- Compression Set, 22 Hours @ 212°F @ 50%: 1.5% (ASTM D1056)
- Density: 6 lb/ft³ (ASTM D1056)
- Recommended Constant Use: 392°F
BISCO® FPC
BISCO® FPC (Fire Protective Covering) is a flame-retardant silicone foam with silicone elastomer directly cast onto a reinforcing fiberglass layer, available in three thicknesses — 1.59 mm (0.063"), 3.18 mm (0.125"), and 6.35 mm (0.250") — with a density of 513 kg/m³ (32 lb/ft³) per ASTM F 1315. The material resists burn-through from flames up to 1038°C (1900°F) and achieves a flame spread index of <5 per ASTM E 162, with a continuous service temperature range of -55° to 200°C (-67° to 392°F) per SAE J 2236. It is available with or without pressure-sensitive adhesive.
Key Properties
- Flame Spread (Is): <5 (ASTM E 162)
- Smoke Density-Flaming (Ds-4 min / Ds-1.5 min): <75 / <25 (ASTM E 662)
- Density: 513 kg/m³ (32 lb/ft³) (ASTM F 1315)
- Temperature, Continuous: -55° to 200°C (-67° to 392°F) (SAE J 2236)
- Dielectric Breakdown: 1100 volts (ASTM D 149-90)
- Arc Resistance: +1800 seconds (ASTM D 495-89)
BISCO® IF-200 Tear Resistant
BISCO® IF-200 is a specialty silicone foam composite consisting of a fiberglass support layer directly bonded to BF-1000 silicone foam, fixed at 0.197" thickness with an areal density of 0.29 lb/ft², designed to provide resistance against tear and abrasion while retaining flexibility. The material passes cohesive failure testing and FMVSS302 for flame compliance. It is suited for automotive, HVAC, aerospace, rail, and mechanical applications exposed to vibration, wear, or mechanical stress.
Key Properties
- Thickness: 0.197"
- Areal Density: 0.29 lb/ft²
- Cohesive Failure: Pass
- FMVSS302: Pass
- Material/Substrate: Silicone Foam with fiberglass support layer (BF-1000)
- Color: White
BISCO® L3-XX40 Dynamic Flooring
BISCO® L3-XX40 is a medium-density cellular silicone foam designed for use as a vibration isolation pad in rail car floating floors, with a density of 29 lb/ft³ and a compression force deflection of 11 psi per ASTM D1056, available in four thicknesses from 0.157" to 0.472". The material has a temperature range of -67°F to 392°F, meets ASTM E162 for flame spread index and ASTM E662 for smoke density, and is UV and weather resistant.
Key Properties
- Compression Force Deflection: 11 psi (ASTM D1056)
- Compression Set, 22 Hours @ 212°F @ 50%: 2.4% (ASTM D1056)
- Water Absorption: 0.5%
- Density: 29 lb/ft³
- Temperature Range: -67°F to 392°F
- Flame Spread Index (Is) / Smoke Density (Ds): Meets (ASTM E162 / ASTM E662)
BISCO® RF-120 Heat Shield
BISCO® RF-120 is a specialty reflective silicone foam composite comprising a smooth aluminized fabric bonded to low-density BF-1000 silicone foam, available in 0.098" and 0.197" thicknesses, designed to insulate against heat and reflect it away from sensitive components. The material has a temperature range of -67°F to 392°F and passes FMVSS302. Thermal conductivity is 0.067 W/m·K and dielectric strength is 55 Volts/mil per ASTM D149.
Key Properties
- Compression Set, 22 Hours @ 212°F @ 50%: 6% (ASTM D1056)
- Tensile: 20 psi (ASTM D412)
- Elongation: 60% min (ASTM D412)
- Temperature Range: -67°F to 392°F
- Areal Density: 0.098" — 0.17 lb/ft²; 0.197" — 0.24 lb/ft² (ASTM 146)
- Thermal Conductivity: 0.067 W/m·K
BISCO® RS-800 Medium
BISCO® RS-800 is a medium cellular silicone sponge with a density of 25 lb/ft³ and a compression force deflection of 11.5 psi per ASTM D1056, designed to retain the lightness of a foam while providing the enhanced sealing capability of a traditional sponge rubber. The material has a temperature range of -67°F to 392°F, passes UL 94 V-0 and UL 94 HF-1 at a third-party laboratory, and is UV and ozone resistant. RS-800 is an alternative to HT-800.
Key Properties
- Compression Force Deflection: 11.5 psi (ASTM D1056)
- Compression Set, 22 Hours @ 212°F @ 50%: 4.0% (ASTM D1056)
- Water Absorption: 1.0% (ASTM D1056)
- Density: 25 lb/ft³
- Temperature Range: -67°F to 392°F
- UL 94 V-0 / UL 94 HF-1: Pass (Meets at third party lab)
BISCO® RS-820 Firm
BISCO® RS-820 is a firm cellular silicone sponge with a density of 25 lb/ft³ and a compression force deflection of 12–20 psi per ASTM D1056, designed to retain the lightness of a foam while providing the enhanced sealing capability of a traditional sponge rubber. The material has a temperature range of -67°F to 392°F, passes UL 94 V-0 and UL 94 HF-1 at a third-party laboratory, and is UV and ozone resistant. RS-820 is an alternative to HT-820.
Key Properties
- Compression Force Deflection: 22.5 psi (ASTM D1056)
- Compression Set, 22 Hours @ 212°F @ 50%: 4.0% (ASTM D1056)
- Water Absorption: 1.0% (ASTM D1056)
- Density: 30 lb/ft³
- Temperature Range: -67°F to 392°F
- UL 94 V-0 / UL 94 HF-1: Pass (Meets at third party lab)
BISCO® RS-840 Very Firm
BISCO® RS-840 is a very firm cellular silicone sponge with a density of 30 lb/ft³ and a compression force deflection of 22.5 psi per ASTM D1056, designed to retain the lightness of a foam while providing the enhanced sealing capability of a traditional sponge rubber. The material has a temperature range of -67°F to 392°F, passes UL 94 V-0 and UL 94 HF-1 at a third-party laboratory, and is UV and ozone resistant. RS-840 is an alternative to HT-840.
Key Properties
- Compression Force Deflection: 22.5 psi (ASTM D1056)
- Compression Set, 22 Hours @ 212°F @ 50%: 4.0% (ASTM D1056)
- Water Absorption: 1.0% (ASTM D1056)
- Density: 30 lb/ft³
- Temperature Range: -67°F to 392°F
- UL 94 V-0 / UL 94 HF-1: Pass (Meets at third party lab)
BISCO® RS-870 Soft
BISCO® RS-870 is a soft cellular silicone sponge with a density of 16 lb/ft³ and a compression force deflection of 5 psi per ASTM D1056, designed to retain the lightness of a foam while providing the enhanced sealing capability of a traditional sponge rubber. The material has a temperature range of -67°F to 392°F, passes UL 94 V-0 and UL 94 HF-1 at a third-party laboratory, and is UV and ozone resistant. RS-870 is an alternative to HT-870.
Key Properties
- Compression Force Deflection: 5 psi (ASTM D1056)
- Compression Set, 22 Hours @ 212°F @ 50%: 3.5% (ASTM D1056)
- Water Absorption: 1.0% (ASTM D1056)
- Density: 16 lb/ft³
- Temperature Range: -67°F to 392°F
- UL 94 V-0 / UL 94 HF-1: Pass (Meets at third party lab)
BISCO® 7130 Soft FR
BISCO® 7130 is a soft-grade closed-cell silicone sponge designed for flame resistant applications, with a density of 31 lb/ft³ and a compression force deflection of 2–7 psi at 25% per ASTM D1056, available in ten thicknesses from 0.125" to 1.00". The material has a temperature resistance range of -67°F to 400°F and meets BMS 1-60 Type 1 Grade A, passes UL94 HBF‡ and FMVSS302. Tensile strength is 75 psi and elongation is 250% per ASTM D412.
Key Properties
- Compression Force Deflection @ 25%: 2–7 psi (ASTM D1056)
- Tensile Strength: 75 psi (ASTM D412)
- Elongation: 250% (ASTM D412)
- Compression Set, 22 Hours @ 212°F: 35% (ASTM D1056)
- Density: 31 lb/ft³ (ASTM D1056)
- Temperature Resistance: -67°F to 400°F
BISCO® 7304 Medium
BISCO® 7304 is a medium-grade closed-cell silicone sponge that meets specification BMS 1-23, with a density of 35 lb/ft³ and a compression force deflection of 6–14 psi at 25% per ASTM D1056, available in twelve thicknesses from 0.063" to 1.00". The material has a temperature resistance range of -67°F to 450°F, meets BMS 1-23 and FMVSS302, and has a tensile strength exceeding 200 psi per ASTM D412. Color is Red.
Key Properties
- Compression Force Deflection @ 25%: 6–14 psi (ASTM D1056)
- Tensile Strength: >200 psi (ASTM D412)
- Elongation: 150% min (ASTM D412)
- Compression Set, 22 Hours @ 212°F: 20% (ASTM D1056)
- Density: 35 lb/ft³ (ASTM D1056)
- Temperature Resistance: -67°F to 450°F
BISCO® 7330 Firm FR
BISCO® 7330 is a medium-grade closed-cell silicone sponge designed for flame resistant applications, with a density of 35 lb/ft³ and a compression force deflection of 7–14 psi at 25% per ASTM D1056, available in twelve thicknesses from 0.063" to 1.00". The material has a temperature resistance range of -67°F to 450°F and meets BMS 1-60 Type 1 Grade B, DMS-1980 Grade 2 Medium, and FMVSS302. Tensile strength exceeds 100 psi and elongation is 400% per ASTM D412.
Key Properties
- Compression Force Deflection @ 25%: 7–14 psi (ASTM D1056)
- Tensile Strength: >100 psi (ASTM D412)
- Elongation: 400% (ASTM D412)
- Compression Set, 22 Hours @ 212°F: 35% (ASTM D1056)
- Density: 35 lb/ft³ (ASTM D1056)
- Temperature Resistance: -67°F to 450°F
BISCO® 7430 Firm FR
BISCO® 7430 is a firm-grade closed-cell silicone sponge designed for flame resistant applications, with a density of 35 lb/ft³ and a compression force deflection of 14–22 psi at 25% per ASTM D1056, available in eight thicknesses from 0.063" to 0.500". The material has a temperature resistance range of -67°F to 400°F and meets BMS 1-60 Type 1 Grade C and FMVSS302. Tensile strength exceeds 200 psi and elongation is 250% per ASTM D412.
Key Properties
- Compression Force Deflection @ 25%: 14–22 psi (ASTM D1056)
- Tensile Strength: >200 psi (ASTM D412)
- Elongation: 250% (ASTM D412)
- Compression Set, 22 Hours @ 212°F: 35% (ASTM D1056)
- Density: 35 lb/ft³ (ASTM D1056)
- Temperature Resistance: -67°F to 400°F
kSil™ KSV001 V-0 Super Soft
kSil™ KSV001 is a super soft, lightweight closed-cell silicone sponge with a density of 10.0 lbs/ft³ and a compression stress of 2.8 psi at 25% strain per ASTM D1056, available in six thicknesses from 1/4" to 1". The material achieves UL94 V0 at 1.5 mm, passes EN45545-2 (HL3), NFPA 130, FAR 25 Appendix F Sec A 1 (i) & (ii), CS 25 Appendix F Sec A 1 (i) & (ii), Bombardier SMP 800c, and Airbus ABD0031, with a compression set of 1% at 22 hours, 212°F, 50% per ASTM D1056 and a service range of -76°F to 446°F continuous.
Key Properties
- Compression Stress 25% Strain: 2.8 psi (ASTM D1056)
- Tensile Strength: 24.7 psi (BSENISO 1798, ASTM D412)
- Elongation to Failure: 110% (BSENISO 1798, ASTM D412)
- Compression Set, 22 Hours @ 212°F, 50%: 1% (ASTM D1056)
- Density: 10.0 lbs/ft³ (BSENISO 845, ASTM D3574)
- High Temperature Resistance: 446°F
kSil™ KSV002 Soft
kSil™ KSV002 is a soft, lightweight closed-cell silicone sponge with a density of 13.7 lbs/ft³ and a compression stress of 4.1 psi at 25% strain per ASTM D1056, available in seven thicknesses from 1/8" to 1". The material achieves UL94 V0 at 1.5 mm, passes EN45545-2 (HL3), NFPA 130, FAR 25 Appendix F Sec A 1 (i) & (ii), CS 25 Appendix F Sec A 1 (i) & (ii), Bombardier SMP 800c, and Airbus ABD0031, with a compression set of 2% at 22 hours, 212°F, 50% per ASTM D1056 and a service range of -76°F to 446°F continuous.
Key Properties
- Compression Stress 25% Strain: 4.1 psi (ASTM D1056)
- Tensile Strength: 40.6 psi (BSENISO 1798, ASTM D412)
- Elongation to Failure: 130% (BSENISO 1798, ASTM D412)
- Compression Set, 22 Hours @ 212°F, 50%: 2% (ASTM D1056)
- Density: 13.7 lbs/ft³ (BSENISO 845, ASTM D3574)
- High Temperature Resistance: 446°F
kSil™ KSV003 Soft-Medium
kSil™ KSV003 is a soft-medium, lightweight closed-cell silicone sponge with a density of 19.4 lbs/ft³ and a compression stress of 5.8 psi at 25% strain per ASTM D1056, available in seven thicknesses from 1/8" to 1". The material achieves UL94 V0 at 1.5 mm, passes EN45545-2 (HL3), NFPA 130, FAR 25 Appendix F Sec A 1 (i) & (ii), CS 25 Appendix F Sec A 1 (i) & (ii), Bombardier SMP 800c, and Airbus ABD0031, with a compression set of 3% at 22 hours, 212°F, 50% per ASTM D1056 and a service range of -76°F to 446°F continuous.
Key Properties
- Compression Stress 25% Strain: 5.8 psi (ASTM D1056)
- Tensile Strength: 44.1 psi (BSENISO 1798, ASTM D412)
- Elongation to Failure: 90% (BSENISO 1798, ASTM D412)
- Compression Set, 22 Hours @ 212°F, 50%: 3% (ASTM D1056)
- Density: 19.4 lbs/ft³ (BSENISO 845, ASTM D3574)
- High Temperature Resistance: 446°F
kSil™ KSV004 Medium
kSil™ KSV004 is a medium, lightweight closed-cell silicone sponge with a density of 24.3 lb/ft³ and a compression stress of 9.0 psi at 25% strain per ASTM D1056, available in seven thicknesses from 1/8" to 1". The material achieves UL94 V0 at 1.5 mm, passes EN45545-2 (HL3), NFPA 130, FAR 25 Appendix F Sec A 1 (i) & (ii), CS 25 Appendix F Sec A 1 (i) & (ii), Bombardier SMP 800c, and Airbus ABD0031, with a compression set of 3% at 22 hours, 212°F, 50% per ASTM D1056 and a service range of -76°F to 446°F continuous.
Key Properties
- Compression Stress 25% Strain: 9.0 psi (ASTM D1056)
- Tensile Strength: 64.3 psi (BSENISO 1798, ASTM D412)
- Elongation to Failure: 100% (BSENISO 1798, ASTM D412)
- Compression Set, 22 Hours @ 212°F, 50%: 3% (ASTM D1056)
- Density: 24.3 lb/ft³ (BSENISO 845, ASTM D3574)
- High Temperature Resistance: 446°F
kSil™ KSV005 Medium-Firm
Medium-Firm UL94 V-0 Flame Resistant Closed-Cell Silicone Sponge
kSil™ KSV005 is a medium-firm, lightweight closed-cell silicone sponge with a density of 28.1 lb/ft³ and a compression stress of 14.5 psi at 25% strain per ASTM D1056, available in seven thicknesses from 1/8" to 1". The material achieves UL94 V0 at 1.5 mm, passes EN45545-2 (HL3), NFPA 130, FAR 25 Appendix F Sec A 1 (i) & (ii), CS 25 Appendix F Sec A 1 (i) & (ii), Bombardier SMP 800c, and Airbus ABD0031, with a compression set of 3% at 22 hours, 212°F, 50% per ASTM D1056 and a service range of -76°F to 446°F continuous.
Key Properties
- Compression Stress 25% Strain: 14.5 psi (ASTM D1056)
- Tensile Strength: 97.8 psi (BSENISO 1798, ASTM D412)
- Elongation to Failure: 90% (BSENISO 1798, ASTM D412)
- Compression Set, 22 Hours @ 212°F, 50%: 3% (ASTM D1056)
- Density: 28.1 lb/ft³ (BSENISO 845, ASTM D3574)
- High Temperature Resistance: 446°F
kSil™ KSV006 Firm
kSil™ KSV006 is a firm, lightweight closed-cell silicone sponge with a density of 37.5 lb/ft³ and a compression stress of 21.8 psi at 25% strain per ASTM D1056, available in seven thicknesses from 1/8" to 1". The material passes EN45545-2 (HL3), NFPA 130, FAR 25 Appendix F Sec A 1 (i) & (ii), CS 25 Appendix F Sec A 1 (i) & (ii), Bombardier SMP 800c, and Airbus ABD0031; UL94 V0 is achieved at 3.0 mm (Gray) and 1.5 mm (Black). Compression set is 2% at 22 hours, 212°F, 50% per ASTM D1056, and the service range is -76°F to 446°F continuous.
Key Properties
- Compression Stress 25% Strain: 21.8 psi (ASTM D1056)
- Tensile Strength: 120.4 psi (BSENISO 1798, ASTM D412)
- Elongation to Failure: 90% (BSENISO 1798, ASTM D412)
- Compression Set, 22 Hours @ 212°F, 50%: 2% (ASTM D1056)
- Density: 37.5 lb/ft³ (BSENISO 845, ASTM D3574)
- High Temperature Resistance: 446°F
BISCO® A2 Fiberglass Reinforced Sound Barrier
BISCO® A2 Fiberglass Reinforced Sound Barrier is a VMQ silicone sound barrier with an embedded fiberglass reinforcement layer, available in three areal densities — 0.20, 0.31, and 0.61 lb/ft² per ISO 2286-2 — with Shore A hardness of 62 per ISO 868 and temperature stability of -58°F to 356°F. The material passes FAR 25.853a flammability, FAR 25.853 (a-1) (AITM 2.0007) smoke density, and FAR 25.856 (a) (AITM 2.0053) flame propagation resistance. Tensile and tear strength values are areal-density-dependent and listed per ISO 37 Type 2 and ISO 4674-1 Method B respectively.
Key Properties
- Hardness, Shore A: 62 (ISO 868)
- Tensile Strength (Wrap): 5076 / 3625 / 1740 lb/ft² — by areal density (ISO 37 Type 2)
- Tear Strength (Wrap/Fill): 114 / 85 / 57 lb/ft² — by areal density (ISO 4674-1 Method B)
- Areal Density: 0.20 lb/ft², 0.31 lb/ft², 0.61 lb/ft² (ISO 2286-2)
- Temperature Stability: -58°F to 356°F
- Flame Propagation Resistance: Pass (FAR 25.856 (a) / AITM 2.0053)
BISCO® A2 Sound Barrier
BISCO® A2 Sound Barrier is a solid VMQ silicone rubber engineered for demanding aircraft and rail acoustic barrier applications, with a density of 1.64 g/cm³ per ISO 2781, Shore A hardness of 62 per ISO 868, tensile strength of 2.8 MPa per ISO 37 Type 2, and temperature stability of -58°F to 356°F. The material demonstrates excellent performance in low-frequency noise reduction and passes FAR/JAR Part 25 flammability, flame propagation resistance, flame penetration resistance (bonded condition), smoke gas components, and smoke density requirements, and meets Airbus ABS5708.
Key Properties
- Hardness, Shore A: 62 (ISO 868)
- Tensile Strength: 2.8 MPa (ISO 37 Type 2)
- Elongation at Break: 220% (ISO 37 Type 2)
- Density: 1.64 g/cm³ (ISO 2781)
- Temperature Stability: -58°F to 356°F
- Flame Propagation Resistance: Pass (FAR, Part 25, App. F Part VI)
R10490 Flurosilicone Sponge Rubber
Norseal® R10490 is a medium-grade fluorosilicone closed-cell sponge rubber with a density of 35 lbs/ft³ (554 kg/m³) per ASTM D3574 and a compression deflection of 15 psi (104 kPa) per ASTM D1056, available in four thicknesses from .031" to .125" in continuous rolls and sheets 36 in. wide. The material has an operating temperature range of -80°F to +400°F and is capable of meeting AMS 3323 Class 2, MIL-R-6130 Type 2 Grade A/B/C, and ASTM D6576 Type 2 Grade A/B/C (flame resistance paragraphs excluded). R10490 is specifically suited for applications containing oils and fluids that would degrade normal elastomers.
Key Properties
- Compression Deflection: 15 psi (104 kPa) (ASTM D1056)
- Tensile Strength: 180 psi (1245 kPa) (ASTM D412)
- Elongation: 125% (ASTM D412)
- Compression Set: 25% (ASTM D1056)
- Density: 35 lbs/ft³ (554 kg/m³) (ASTM D3574)
- Operating Temperature: -80°F to +400°F
