80 Durometer Commercial Grade Solid Silicone
80 Durometer Commercial Grade Solid Silicone is a commercial grade solid silicone elastomer rated at 80 Shore A, designed for extreme temperature applications where a firm, high-durometer silicone is required. It is rated for continuous service from -80°F to 450°F, with intermittent capability to 500°F. The material exhibits UV and ozone resistance and functions as an effective electrical insulator.
Key Properties
- Durometer / Hardness (Shore A): 80 ±5 — ASTM D2240
- Tensile Strength: 950 psi — ASTM D412
- Elongation: 300% — ASTM D412
- Tear Strength: 100 ppi — ASTM D624 (Die B)
- Specific Gravity: 1.48 g/cc — ASTM D297
- Service Temperature Range: -80°F to 450°F continuous; 500°F intermittent
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- Specifications
- Applications
- General Info
- FAQs
Physical Properties
| Property | Value | Test Method |
| Material / Substrate | Solid Silicone | — |
| Color | Black (other colors by special request) | — |
| Specific Gravity | 1.48 g/cc | ASTM D297 |
| Thickness | 1/32″, 1/16″, 3/32″, 1/8″, 3/16″, 1/4″, 1/2″ | — |
Mechanical Properties
| Property | Value | Test Method |
| Durometer / Hardness (Shore A) | 80 ±5 | ASTM D2240 |
| Tensile Strength | 950 psi | ASTM D412 |
| Elongation | 300% | ASTM D412 |
| Tear Strength | 100 ppi | ASTM D624 (Die B) |
Thermal Properties
| Property | Value | Test Method |
| Low Temperature Resistance | -80°F | — |
| High Temperature Resistance | 450°F | — |
| High Intermittent Temperature | 500°F | — |
Environmental Performance
| Property | Value | Test Method |
| Ozone Resistance | Yes | — |
| UV Resistance | Yes | — |
- Setting blocks for curtain wall and commercial window and door assemblies
- Oven door and furnace seal gaskets requiring high firmness and thermal stability
- Electrical insulators and separators in high-temperature enclosures
- Sealing elements for buildings with critical high-temperature structural requirements
- RV oven seals and high-temperature appliance gasketing
Common industries: Construction / architectural glazing, industrial equipment, appliance manufacturing, HVAC, electrical / electronics.
80 Durometer Commercial Grade Solid Silicone is a firm commercial grade solid silicone elastomer at 80 Shore A — among the firmest in this series — designed for applications that require high resistance to deformation under compressive load while retaining the broad thermal performance characteristic of silicone elastomers. It is suited for use as insulators, separators, setting blocks, and seals in oven door, furnace, curtain wall, and commercial window and door assemblies operating under critical temperature conditions.
With a specific gravity of 1.48 g/cc — the highest in the series — this grade offers a dense, dimensionally stable profile. At 950 psi tensile strength, it matches the tensile performance of the 50-durometer grade while providing significantly greater stiffness. Low compression set is cited as a key feature, indicating formulation for sustained performance under load. The material is readily fabricated by die-cutting and resists UV radiation and ozone degradation.
What differentiates 80 Durometer Commercial Grade Solid Silicone from softer grades in this series?
80 Durometer Commercial Grade Solid Silicone is one of the firmest grades in the commercial solid silicone series at 80 Shore A, with the highest specific gravity (1.48 g/cc) in the lineup. This density and stiffness combination is advantageous in load-bearing sealing and setting block applications where the material must resist permanent deformation under sustained compressive load across wide temperature swings.
Why is compression set an important consideration for solid silicone elastomers?
Compression set measures how well an elastomer recovers its original thickness after sustained compression. In sealing applications, a material with high compression set will permanently deform over time, reducing sealing force and allowing leak paths to develop. Low compression set is listed as a key feature of this material, indicating it is formulated to maintain sealing integrity over extended service periods.
What is the service temperature range for 80 Durometer Commercial Grade Solid Silicone?
80 Durometer Commercial Grade Solid Silicone is rated for continuous service from -80°F to 450°F, with a high intermittent temperature resistance of 500°F, as listed on the TDS.
Is 80 Durometer Commercial Grade Solid Silicone suitable for outdoor or UV-exposed environments?
Yes. The TDS states that this material exhibits both UV resistance and ozone resistance, making it appropriate for exterior architectural and glazing applications. No specific compliance standards are cited on the TDS.
How should 80 Durometer Commercial Grade Solid Silicone be specified?
Specify grade (80 Durometer Commercial Grade Solid Silicone), thickness, color (black standard; other colors by special request), dimensional tolerances, and finished format.
