50 Durometer Commercial Grade Solid Silicone
50 Durometer Commercial Grade Solid Silicone is a medium-soft commercial grade solid silicone elastomer at 50 Shore A, occupying the mid-range of the series. It is intended for sealing, gasketing, and glazing applications that require a balance of compliance and physical strength. At 950 psi tensile strength — the highest in the series — this grade offers strong resistance to tearing and physical damage while remaining sufficiently flexible for die-cut gasket profiles.
The material provides inherent resistance to UV radiation and ozone and serves as an effective electrical insulator. Low compression set is cited as a key performance feature, supporting long-term sealing force retention. It is readily processed by die-cutting.
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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 | 1.34 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) | 50 ±5 | ASTM D2240 |
| Tensile Strength | 950 psi | ASTM D412 |
| Elongation | 600% | ASTM D412 |
| Tear Strength | 105 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
- Electrical insulation components in high-temperature environments
- General-purpose seals and gaskets in UV- and ozone-exposed installations
Common industries: HVAC, construction / architectural glazing, industrial equipment, appliance manufacturing, electrical / electronics.
50 Durometer Commercial Grade Solid Silicone is a medium-soft commercial grade solid silicone elastomer at 50 Shore A, occupying the mid-range of the series. It is intended for sealing, gasketing, and glazing applications that require a balance of compliance and physical strength. At 950 psi tensile strength — the highest in the series — this grade offers strong resistance to tearing and physical damage while remaining sufficiently flexible for die-cut gasket profiles.
The material provides inherent resistance to UV radiation and ozone and serves as an effective electrical insulator. Low compression set is cited as a key performance feature, supporting long-term sealing force retention. It is readily processed by die-cutting.
What differentiates 50 Durometer Commercial Grade Solid Silicone from softer and firmer grades in this series?
50 Durometer Commercial Grade Solid Silicone achieves the highest tensile strength in the series at 950 psi while maintaining a medium-soft 50 Shore A durometer. This combination of physical strength and moderate compliance makes it suitable where gaskets or seals must resist tearing during installation or service without sacrificing conformability.
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 50 Durometer Commercial Grade Solid Silicone?
50 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 50 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 HVAC applications. No specific compliance standards are cited on the TDS.
How should 50 Durometer Commercial Grade Solid Silicone be specified?
Specify grade (50 Durometer Commercial Grade Solid Silicone), thickness, color (black standard; other colors by special request), dimensional tolerances, and finished format.
