30 Durometer Commercial Grade Solid Silicone
30 Durometer Commercial Grade Solid Silicone is a commercial grade solid silicone elastomer rated at 30 Shore A — the softest durometer in this series — designed for extreme temperature applications requiring a highly compliant, conformable seal or gasket. It is suited for applications where low closure force or intricate sealing geometry demands maximum flexibility. The material performs across a continuous service range of -80°F to 450°F, with intermittent capability to 500°F. It exhibits inherent UV and ozone resistance, making it appropriate for outdoor and weathering environments.
Key Properties
- Durometer / Hardness (Shore A): 30 ±5 — ASTM D2240
- Tensile Strength: 825 psi — ASTM D412
- Elongation: 800% — ASTM D412
- Tear Strength: 80 ppi — ASTM D624 (Die B)
- Specific Gravity: 1.12 g/cc — ASTM D297
- Service Temperature Range: -80°F to 450°F continuous; 500°F intermittent
We want to help!
Enter your information and we'll get you in touch with our knowledgable staff. We know how important to the right product for your project.
Request a Consultation
- Specifications
- Applications
- General Info
- FAQs
Physical Properties
| Property | Value | Test Method |
| Material / Substrate | Solid Silicone | — |
| Color | Black (other by special request) | — |
| Specific Gravity | 1.12 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) | 30 ±5 | ASTM D2240 |
| Tensile Strength | 825 psi | ASTM D412 |
| Elongation | 800% | ASTM D412 |
| Tear Strength | 80 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 | — |
- Gaskets and seals for high-temperature oven and furnace assemblies
- HVAC system gaskets and seals requiring broad thermal performance
- Silicone boot profiles for curtain wall glazing systems
- Flexible sealing elements where low closure force is required
- General-purpose seals in UV- and ozone-exposed outdoor environments
Common industries: HVAC, construction / architectural glazing, industrial equipment, appliance manufacturing.
30 Durometer Commercial Grade Solid Silicone is a commercial grade solid silicone elastomer at the low end of the durometer range, providing maximum softness and flexibility within this product series. Its 30 Shore A hardness makes it well suited for applications requiring a conformable seal against irregular surfaces, low-load gaskets, and flexible glazing boots where stiffness must be minimized. The material is designed for extreme temperature service, maintaining elastomeric properties across a broad thermal range.
The 30 durometer grade delivers the highest elongation in the series at 800%, reflecting its highly compliant nature. It resists degradation from UV exposure and ozone, and functions as an effective electrical insulator. The material is easily processed by die-cutting into gaskets, seals, and custom shapes.
What differentiates 30 Durometer Commercial Grade Solid Silicone from higher-durometer grades in this series?
30 Durometer Commercial Grade Solid Silicone is the softest grade in the commercial solid silicone series at 30 Shore A, delivering the highest elongation (800%) and lowest specific gravity (1.12 g/cc). This level of compliance is advantageous in applications where minimal sealing force is available or where the gasket must conform to irregular or delicate mating surfaces.
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 30 Durometer Commercial Grade Solid Silicone?
30 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 30 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 outdoor architectural and glazing applications. No specific compliance standards are cited on the TDS.
How should 30 Durometer Commercial Grade Solid Silicone be specified?
Specify grade (30 Durometer Commercial Grade Solid Silicone), thickness, color (black standard; other colors by special request), dimensional tolerances, and finished format.
