Silicone Seals
Custom molded and precision die-cut silicone seals designed for sensitive electronics enclosures, medical fluidic valves, commercial appliances, and aerospace access doors. Offers exceptional dielectric insulation, zero outgassing, and long-term elasticity.
Types & Configurations of Silicone Seals
Complex 3D Perimeter Enclosure Seals
Injection molded silicone seals with continuous retention ribs for electronics enclosures.
Thin Die-Cut Silicone Flange Gaskets
Waterjet and punch-cut flat gaskets sealing chemical equipment and fluid reservoirs.
Medical Umbrella & Duckbill Check Valves
Micro-molded silicone non-return valves controlling precision fluid flow in medical devices.
Conductive Silicone EMI/RFI Shielding Seals
Elastomeric seals loaded with silver-plated copper or nickel particles for military shielding.
Dual-Material Overmolded Silicone Gaskets
Silicone directly bonded onto rigid plastic or metal frames in a single molding operation.
Key Industrial Applications
Specifications & Technical Details
Silicone Seals can be precision-manufactured in custom dimensions, wall thicknesses, cross-sections, and durometers to match your exact application specifications. Below are typical engineering cross-section drawings and technical parameters for reference.
Typical Dimension Drawings & Blueprint Cross-Sections
Technical Specifications
| Parameter | Specification / Options |
|---|---|
| Manufacturing Methods | Liquid Silicone Rubber (LSR) injection molding, compression molding, and CNC die-cutting |
| Hardness Range | 10A Shore A (ultra-soft gel) to 85A Shore A (firm elastomer) |
| Tolerances | ISO 3302-1 Class M1 (high-precision liquid silicone molding) |
| Outgassing | Meets NASA SP-R-0022A low-outgassing requirements for aerospace vacuum |
| Dielectric Strength | 20 kV/mm to 25 kV/mm (outstanding electrical insulator) |
| Certifications | USP Class VI, FDA 21 CFR 177.2600, RoHS, REACH, UL 94 V-0 |
| Operating Temp | -60°C to +230°C |
Material Selection & Properties
We offer specialized compound formulations tailored to chemical media, thermal extremes, static deflection, and dynamic fatigue requirements. The best material depends on your operating environment and required service life.
| Material / Polymer | Key Engineering Properties | Recommended Applications & Considerations |
|---|---|---|
| General Purpose Silicone | Thermal stability from -60°C to +200°C, dielectric | Electrical insulation, high-temp oven door seals |
| Platinum-Cured Silicone | Ultra-pure, non-yellowing, zero peroxide byproducts | Medical fluid transfer, pharmaceutical filling lines |
| High-Temperature Grade | Continuous operation up to +250°C, intermittent +300°C | Automotive turbocharger hoses, furnace baffles |
| Flame Retardant (UL94 V-0) | Low smoke toxicity, self-extinguishing flame resistance | Rail transit interior seals, EV battery pack insulation |
| Conductive / Antistatic Silicone | Volume resistivity 10² to 10⁴ Ω·cm for ESD shielding | Avionics EMI/RFI shielding, semiconductor handling |
Important Engineering Guidance
The above properties are general characteristics. Final material selection depends on your specific application, operating conditions, load requirements, media compatibility, and service temperature. Please contact our polymer engineering team for tailored compounding guidance on Silicone Seals.
Production Batch Gallery
Actual production batch examples of Silicone Seals manufactured for OEM, automotive, railway, and heavy engineering clients. We manufacture standard catalogue sizes as well as bespoke custom geometries from your CAD models or physical samples.
Request an Engineering Quote
Share your required dimensions, polymer grade, or 2D/3D drawings for immediate engineering review and quote.