Automotive
Seals, gaskets, grommets, and connector seals for automotive OEM applications
SIKING in Automotive
SIKING supplies silicone sealing components to automotive OEMs and Tier-1 suppliers. The automotive case for silicone centers on material durability under heat, chemical exposure, and cyclic compression — requirements that standard rubber compounds cannot consistently meet at under-hood temperatures.
SIKING's automotive qualification is built on process control, not certifications. DPPM ≤ 1,000 and first-pass yield ≥97% are the production metrics that matter to procurement engineers comparing suppliers.
- DPPM ≤ 1,000 (reported from production)
- First-pass yield ≥97%
- Temperature resistance: -60°C to +200°C (standard silicone)
- Fluorosilicone available for fuel and oil exposure
- IATF 16949: SIKING is pursuing this certification — not currently held
- ISO 9001:2015 — currently held
Key Products for Automotive
Seals & Gaskets
Custom silicone and fluorosilicone seals for under-hood applications. O-rings, face seals, and custom-profile gaskets. Fluorosilicone for fuel and oil media exposure.
View Seals →Grommets
Wire harness grommets and panel grommets for body and underbody routing. Custom geometry, multi-durometer options where pass-through sealing must coexist with vibration isolation.
Vibration Dampeners
Silicone isolators and dampening pads for electronic module mounting, sensor housings, and interior trim components. Tuned durometer and geometry for target frequency attenuation.
Connector Seals
Automotive-grade silicone seals for wire harness connectors. IP67+ sealing at connector interfaces for exterior, underbody, and powertrain harness applications. Compression-molded to connector housing geometry.
View Seals →Material Performance
Key material parameters for automotive applications — select material based on operating environment.
| Property | Standard Silicone (VMQ) | Fluorosilicone (FVMQ) |
|---|---|---|
| Temperature range | -60°C to +200°C | -65°C to +200°C |
| Fuel / oil resistance | Poor — avoid for fluid exposure | Good — suitable for fuel and oil environments |
| Compression set resistance | Good | Very good |
| Hardness range (Shore A) | 20–90 | 40–80 |
| UV and ozone resistance | Excellent | Excellent |
Relevant Capabilities
Compression Molding
Primary process for automotive seals and gaskets. 20+ presses at 200–400T, including a 400T large-format press for oversized gaskets up to 800×1200mm.
Learn More →In-House Tooling
CNC mold making in-house. DFM review before tooling commitment. Fast tooling iteration without external vendor dependencies. 8,000+ historical molds on record.
Learn More →LSR Injection Molding
Two dedicated LSR injection units for precision automotive seals where dimensional tolerance is critical. ±0.02mm standard tolerance.
Learn More →Automotive Quality Position
✓ Currently Held
- ISO 9001:2015 — Quality management system
- ISO 14001:2015 — Environmental management
- DPPM ≤ 1,000 (from active production)
- First-pass yield ≥97%
⚠ In Progress — Not Held
- IATF 16949 — SIKING is pursuing this certification
Procurement teams requiring IATF 16949 certification should discuss project timeline and SIKING's certification pathway before qualifying SIKING for IATF-mandatory supply chains.
Sourcing Silicone for an Automotive Application?
Share your drawing and operating environment. We'll confirm material selection, tolerance capability, and documentation available.