Silicone Cords
Precision extruded circular silicone cords engineered for rapid O-ring fabrication, groove sealing, high-temperature lid packing, and laboratory apparatus sealing. Can be joined on-site or factory vulcanized with specialized silicone adhesives.
Types & Configurations of Silicone Cords
Solid Round Silicone O-Ring Cords
Precision ground solid circular cords from 1.0mm to 50mm diameter for chemical and hot air grooves.
Closed-Cell Sponge Silicone Cords
Soft cellular round cords providing watertight seal under minimal compressive bolt loads.
Platinum-Cured Transparent Cords
USP Class VI certified transparent round cords for pharmaceutical and food process lids.
High-Temperature Iron-Oxide Red Cords
Heat-stabilized round cords sealing industrial furnaces, autoclave doors, and boilers.
Metal-Detectable Blue Silicone Cords
Formulated with food-grade metallic additives detected by inline food metal detectors.
Key Industrial Applications
Specifications & Technical Details
Silicone Cords 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 |
|---|---|
| Cord Diameters | 1.0mm up to 50.0mm circular diameter |
| Diameter Tolerances | DIN ISO 3302-1 Class E1 precision extrusion tolerance |
| Hardness Options | Solid: 40A, 50A, 60A, 70A, 80A Shore A; Sponge: 0.40 to 0.65 g/cm³ |
| Tensile Strength | 7.0 MPa to 11.0 MPa (ASTM D412) |
| Elongation at Break | 350% to 550% |
| Jointing Strength | Hot-vulcanized joint withstands > 80% of base cord tensile strength |
| Operating Temp | -60°C to +250°C continuous |
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 Cords.
Production Batch Gallery
Actual production batch examples of Silicone Cords 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.