Our silicone rubber joints are precision-molded from high-purity platinum-vulcanized silicone rubber, engineered to realize leak-proof connection, vibration absorption, and angular compensation for pipelines, equipment ports, and components in diverse scenarios. Integrating silicone’s inherent high-temperature resistance, corrosion resistance, and non-toxicity, the products meet FDA, RoHS, and automotive industry standards, providing reliable connection solutions for global clients in automotive
Our silicone rubber joints are precision-molded from high-purity platinum-vulcanized silicone rubber, engineered to realize leak-proof connection, vibration absorption, and angular compensation for pipelines, equipment ports, and components in diverse scenarios. Integrating silicone’s inherent high-temperature resistance, corrosion resistance, and non-toxicity, the products meet FDA, RoHS, and automotive industry standards, providing reliable connection solutions for global clients in automotive, electronic, food & beverage, medical, and industrial sectors.
Core Structure & Key Performance Advantages
Adopting one-piece molding or multi-layer composite structure (silicone rubber main body + reinforced inner lining + sealing唇边), the joints are tailored to different connection types (socket, flange, threaded) and pipeline specifications. This design ensures both reliable sealing and flexible adaptation, with comprehensive performance advantages:
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Superior sealing performance: Integrated sealing唇边 (single or double唇边 design) with high elasticity, achieving IP67 waterproof and dustproof grade. The sealing pressure tolerance reaches 0.1-4.0MPa, with no leakage even under long-term pressure and temperature fluctuations. After 1000h pressure retention test, pressure loss ≤0.03kPa/h.
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Excellent temperature & environmental adaptability: Continuous operating temperature range of -60℃ to 200℃ (short-term resistance up to 250℃), maintaining elasticity and sealing performance in extreme cold/heat environments. Resists ozone, UV radiation, acid/alkaline corrosion (pH 1-14), oil, and chemical reagents, with no softening, hardening, or cracking after 5000h outdoor exposure.
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Flexible connection & vibration absorption: The silicone rubber material has excellent flexibility, with angular deflection range of 0-15° and axial compensation of ±5mm, capable of absorbing 60% of vibration energy. Effectively compensates for installation deviations and pipeline displacement, reducing mechanical vibration impact on equipment and extending pipeline service life.
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Safety compliance & hygiene: Platinum vulcanization process ensures non-toxicity, odorlessness, and low migration (volatile substances ≤0.5%), meeting FDA 21 CFR 177.2600 (food grade) and USP Class VI (medical grade) standards. Heavy metal content ≤10mg/kg, suitable for direct food contact and medical equipment connection scenarios.
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Precise dimensional control & strong compatibility: Inner diameter range of 3mm-200mm, matching common pipeline specifications (PVC, stainless steel, copper tubes). Dimensional tolerance controlled within ±0.1mm, with tight fit to pipeline outer walls. Support custom thread specifications, flange sizes, and sealing唇边 structures according to client drawings.
Precision Manufacturing & Strict Quality Control
The production process strictly adheres to molding standards and quality inspection procedures to ensure the consistency of product structure and performance, avoiding sealing failure and structural damage:
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Raw material screening & preparation: Select high-purity silicone rubber raw materials (food/industrial/medical grade) with platinum vulcanizing agents, mixed uniformly via dual-screw mixing to ensure material stability. Raw materials undergo purity, thermal stability, and toxicity tests before use.
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Precision molding & vulcanization: Adopt compression molding or injection molding technology, with mold temperature controlled at 170-190℃ and molding pressure at 2.0-3.5MPa. The one-piece molding process eliminates splicing seams, ensuring structural integrity. Post-vulcanization (200℃ for 10min) enhances mechanical properties and sealing performance.
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Trimming & surface treatment: Automated trimming to remove burrs and excess materials, ensuring smooth surface and accurate dimensions. Optional anti-wear coating or anti-static treatment for the surface to adapt to harsh industrial environments.
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Comprehensive testing: Each batch undergoes 15-item inspections, including sealing test, pressure burst test, high-temperature aging test, vibration absorption test, FDA migration test, and dimensional measurement. The outgoing qualified rate reaches 99.8%.
Key Application Scenarios & Technical Verification
Our silicone rubber joints have been widely applied in 300+ enterprises, solving core pain points of pipeline connection, sealing, and vibration isolation:
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Automotive & New Energy: Used for battery cooling system connections, engine intake/exhaust pipelines, and air conditioning system joints. The product compensates for thermal expansion and absorbs engine vibration, meeting ISO 11452-2 automotive standards. A new energy vehicle factory reported zero pipeline leakage incidents after application, extending battery pack service life by 2 years.
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Food & Beverage Processing: Applied for food transfer pipeline connections (e.g., dairy, syrup, edible oil) and equipment ports (e.g., filling machines, sterilizers). FDA-certified silicone ensures no flavor migration, withstanding 121℃ steam sterilization. A dairy plant reduced pipeline cleaning time by 50% and passed LFGB audit smoothly.
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Electronic & Electrical Equipment: Used for telecom box ports, LED display cooling pipeline connections, and wire harness protection joints. Achieves IP67 waterproof grade, resisting moisture and dust erosion. An electronic equipment factory reduced equipment failure rate caused by vibration by 70%.
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Medical & Pharmaceutical: Applied for medical equipment pipeline connections (e.g., infusion systems, sterilization equipment) and pharmaceutical transfer pipelines. USP Class VI-certified versions with sterile packaging ensure biocompatibility, helping a pharmaceutical enterprise pass GMP certification.
Custom Solutions & Efficient Service
We provide personalized customization and one-stop service to match diverse connection scenarios and pipeline specifications:
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Multi-dimensional customization: Customize silicone grade (food/industrial/medical), connection type (socket/flange/threaded), inner/outer diameter (3mm-200mm), sealing design (single/double), and color (translucent/white/black). Optional flame-retardant (UL94 V0) and anti-static (surface resistance 10⁶-10⁹ Ω) treatments.
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Functional upgrades: Optional quick-install structures (tool-free installation), anti-wear outer coating, and sterile packaging (for medical use). For automotive scenarios, provide oil-resistant formulations to adapt to engine oil erosion.
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Fast response & compliance support: Technical consultation and quotation within 24 hours; custom samples (with test reports) delivered in 5-7 working days. Monthly production capacity of 50 tons ensures bulk delivery in 10-12 days. Full certification packages (FDA/RoHS/USP) are provided for client audits.
