Platinum Cured Silicone Gaskets
Platinum Cured Silicone Gaskets.
A premium grade, peroxide free platinum cured silicone offering an exceptionally wide temperature range and low outgassing, built for demanding industrial and medical grade applications.
| Material | Platinum cured polysiloxane (PMQ/VMQ silicone) |
| Hardness | 60° Shore A (+/- 5°) |
| Temperature range | -60°C to +230°C continuous, +250°C intermittent |
| Tensile strength | 1000 psi (approx. 6.9 MPa) |
| Elongation at break | 600% min |
| Specific gravity | 1.18 g/cc |
| Tear strength | 135 ppi (Die B) |
| Ozone resistance | Excellent |
| Resilience | Poor |
| Compliance | FDA CFR21 177-2600, EC1935/2004 |
Every gasket is cut to order, from single prototypes through to full production runs. Send us your drawing or dimensions and we will come back with a quotation.
Why choose Platinum Cured Silicone for sealing applications?
Most silicone gaskets are cured using peroxide catalysts, and it’s those catalysts that cause volatiles and outgassing once the material is in service. This grade uses a platinum cure system instead, the same clean cure process common in medical grade silicone, giving a material with extremely low volatile content and low outgassing. That makes it a strong choice anywhere outgassing could contaminate a process or cause problems for sensitive equipment nearby.
Temperature performance is where this grade really stands out, with a continuous service range of -60°C to +230°C and short term tolerance up to 250°C. It also offers excellent ozone resistance and excellent dry heat resistance, alongside good water resistance. Ingredients used in this formulation meet FDA compliance requirements and the grade also complies with EC1935/2004, making it a suitable choice for food and pharmaceutical applications as well as demanding industrial ones.
One honest limitation: this grade has poor resistance to acids, so it isn’t the right choice for applications involving acidic media. Resilience is also rated poor despite the material’s other strengths, which is worth factoring in for applications involving repeated dynamic loading rather than a static seal.
For further information on our services or to discuss your requirements, contact us today.
