Our silicone corrugated connecting tubes are precision-molded from high-purity platinum-vulcanized silicone, integrated with advanced corrugated structure design. Tailored to pipeline connection scenarios that require flexibility, compensation, and sealing protection, the products combine silicone’s inherent high-temperature resistance, corrosion resistance, and non-toxicity with the corrugated structure’s axial expansion, angular deflection, and vibration absorption advantages. Meeting FDA, RoH
Our silicone corrugated connecting tubes are precision-molded from high-purity platinum-vulcanized silicone, integrated with advanced corrugated structure design. Tailored to pipeline connection scenarios that require flexibility, compensation, and sealing protection, the products combine silicone’s inherent high-temperature resistance, corrosion resistance, and non-toxicity with the corrugated structure’s axial expansion, angular deflection, and vibration absorption advantages. Meeting FDA, RoHS, and automotive industry standards, they provide reliable connection solutions for global clients in automotive, electronic, food & beverage, medical, and industrial pipeline systems.
Core Structure & Key Performance Advantages
Adopting one-piece molding technology (no splicing or bonding), the tubes feature uniform wave pitch, precise wall thickness, and integrated connection ends (socket, threaded, flange optional), ensuring tight fit with pipelines of various specifications. This design achieves comprehensive performance superiority for flexible connection and compensation scenarios:
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Excellent flexible compensation performance: Axial expansion rate up to ±35% (adjustable according to wave number and pitch), angular deflection range 0-18°, capable of compensating for thermal expansion, installation deviations, and pipeline displacement. The uniform corrugated structure ensures stable expansion/contraction without deformation or cracking even after 10,000+ cycles of use, avoiding pipeline damage caused by rigid connection.
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Reliable sealing & environmental adaptability: Integrated sealing structure at connection ends (reinforced sealing lips optional) achieves IP65-IP67 waterproof and dustproof grade. Continuous operating temperature range of -60℃ to 200℃ (short-term resistance up to 250℃), resisting ozone, UV radiation, acid/alkaline corrosion (pH 1-14), oil, and chemical reagents. After 5000h aging test (150℃ high temperature + UV exposure), sealing performance and flexibility remain unchanged.
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Superior vibration absorption & noise reduction: The corrugated structure acts as a buffer, absorbing 65% of vibration energy and reducing pipeline noise by 25-30dB. It effectively isolates mechanical vibration from equipment (pumps, motors) to pipelines, avoiding connection looseness and leakage caused by long-term vibration.
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Safety compliance & hygiene performance: 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 pipeline connection scenarios.
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Precise dimensional control & strong compatibility: Inner diameter range of 5mm-200mm, outer diameter of 8mm-215mm, wave pitch of 5mm-25mm, dimensional tolerance controlled within ±0.1mm. Compatible with common pipeline materials (stainless steel, copper, PVC, aluminum), supporting custom connection end structures and sizes according to client drawings.
Precision Manufacturing & Strict Quality Control
The production process strictly controls each link to ensure the consistency of the corrugated structure, connection tightness, and performance stability, avoiding wave deformation, layer delamination, and sealing failure:
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Raw material screening & preparation: Select high-purity silicone 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, ensuring compliance with relevant industry standards.
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One-piece corrugated molding: Adopt precision mold molding technology, with mold temperature controlled at 180-200℃ and molding pressure at 2.5-3.5MPa. The corrugated structure and connection ends are formed in one step, ensuring uniform wave pitch, tight bonding, and no splicing seams.
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Post-vulcanization & trimming: The molded tubes undergo high-temperature vulcanization (200℃ for 10min) to enhance structural stability, mechanical properties, and layer adhesion. Automated trimming removes burrs and excess materials, ensuring smooth connection ends and accurate dimensions.
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Comprehensive testing: Each batch undergoes 15-item inspections, including expansion/contraction cycle test, sealing test (pressure retention ≤0.03kPa/h), vibration absorption test, high-temperature aging test, FDA migration test, and dimensional measurement. The outgoing qualified rate reaches 99.8%.
Key Application Scenarios & Technical Verification
Our silicone corrugated connecting tubes have been widely applied in 300+ enterprises, solving core pain points of pipeline flexible connection, compensation, and vibration isolation:
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Automotive & New Energy: Used as battery cooling system connectors, engine intake/exhaust pipeline connectors, and air conditioning pipeline compensation tubes. The product compensates for thermal expansion (±30%) and absorbs engine vibration, meeting ISO 11452-2 automotive standards. A new energy vehicle factory reported zero pipeline leakage and connection looseness incidents after application.
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Food & Beverage Processing: Applied for flexible connection of food transfer pipelines (e.g., hot syrup, dairy products, edible oil) and equipment ports (e.g., filling machines, sterilizers). FDA-certified silicone ensures no flavor migration, and the corrugated structure adapts to pipeline displacement during cleaning and maintenance. A dairy plant reduced pipeline maintenance time by 50%.
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Electronic & Electrical Equipment: Used for wire harness protection, telecom box pipeline connections, and LED display cooling system connectors. The axial expansion and angular deflection performance adapts to narrow installation spaces, achieving IP67 waterproof grade. 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 smoothly.
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Industrial & Mechanical: Used for industrial pipeline connections (e.g., chemical reagent transfer, pump station pipelines) and vibration isolation of mechanical equipment. Resists acid/alkaline corrosion and harsh industrial environments, ensuring long-term stable operation. A chemical plant reduced pipeline maintenance frequency by 80%.
Custom Solutions & Efficient Service
We provide personalized customization and one-stop service to match diverse flexible connection and compensation scenarios:
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Multi-dimensional customization: Customize silicone grade (food/industrial/medical), inner/outer diameter (5mm-200mm), wave pitch (5mm-25mm), expansion rate (±10% to ±35%), connection type (socket/flange/threaded), 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 connectors (food/industrial/medical grade), sterile packaging (for medical use), anti-wear outer coating, and reinforced sealing lips (for high-pressure scenarios). For automotive and industrial scenarios, provide oil-resistant and chemical-resistant formulations.
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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 40 tons ensures bulk delivery in 10-12 days. Full certification packages (FDA/RoHS/USP) are provided for client audits.
