China dominates global rubber and silicone manufacturing — from precision O-rings and gaskets to consumer silicone kitchenware and custom-molded parts. Guangdong, Zhejiang, and Fujian are primary regions. Chinese silicone factories serve automotive, medical, food-grade, and consumer product industries with fast tooling turnaround (7–14 days for samples).
Manufacturing Hubs in China
- Guangdong (largest concentration, consumer silicone)
- Zhejiang (precision rubber parts, industrial seals)
- Fujian (industrial rubber products)
- Guangzhou (consumer silicone kitchenware)
Products We Source
- Silicone kitchenware (spatulas, molds, baking mats)
- O-rings & industrial seals
- Custom rubber gaskets
- Silicone baby products (pacifiers, teethers)
- Medical-grade silicone components
- Automotive rubber seals & grommets
- Rubber flooring & mats
- Custom molded silicone parts
- Silicone phone cases & accessories
Required Certifications
- FDA 21 CFR 177.2600 (USA — food contact silicone)
- LFGB (Germany — food contact, highest standard)
- REACH (hazardous substances)
- ISO 9001
- RoHS (silicone with electronic components)
- USP Class VI (pharmaceutical/medical-grade silicone)
ChinaBajar verifies certifications and arranges third-party lab testing before shipment.
Our Sourcing Process
Specification
Define product specs, quality standards, and certifications needed.
Supplier Search
Search 1688.com and our network for verified manufacturers.
Verification
Background check, license verification, factory audit.
Sampling
Order samples from 3–5 shortlisted suppliers.
Negotiation
Mandarin negotiation for best price, MOQ, and terms.
QC & Shipping
Pre-shipment inspection + FCL/LCL/DDP delivery.
Frequently Asked Questions
Food-grade silicone is platinum-cured (not peroxide-cured) silicone complying with FDA 21 CFR 177.2600 (USA) or LFGB (Germany). Key tests: platinum cure verification, migration testing at 70°C and 100°C using food simulants, SVHC (substances of very high concern) screening. Request FDA compliance certificates and LFGB test reports from SGS, BV, or Intertek. Do not accept self-declarations — get third-party test reports. Platinum-cured silicone is the gold standard for food contact.
Process: (1) Provide 2D drawings or 3D CAD (STEP format preferred). (2) Factory creates aluminum mold — 7–14 days, $300–$1,500 per mold depending on complexity. (3) Sample production 3–5 days. (4) Sample review and modification if needed. (5) Mass production 10–20 days. Total from design to first samples: 10–20 days. MOQ for custom molded silicone: typically 500–1,000 units, some factories 300. You own the mold (specify this in contract).
Silicone (polysiloxane): excellent heat resistance (-60°C to +230°C), chemical resistance, food safety — ideal for kitchenware, medical devices, seals. Natural and synthetic rubbers: better abrasion resistance, elasticity at lower temperature — better for dynamic seals, tires. EPDM: best for outdoor weather sealing. NBR (nitrile): best for oil resistance in automotive. Neoprene: marine and chemical resistance. FKM (Viton): extreme temperature and chemical resistance for industrial. Choose material based on operating environment and temperature range.
O-ring sourcing steps: (1) Provide dimensions (ID, OD, cross-section width) and tolerance. (2) Specify material (NBR, EPDM, Silicone, FKM, etc.). (3) Specify hardness (Shore A — typically 40–80). (4) Request material datasheet for application compatibility (oil, water, chemicals, temperature range). (5) Order samples for dimensional and material verification. MOQ: standard sizes 1,000–5,000 units, custom sizes 500–1,000 with tooling. Zhejiang has many precision seal manufacturers serving automotive OEMs.
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