Composite Foam Silicone Tubing: Insulative, Sealing & Durable OEM/ODM from Tengye

Premium Composite Structure: Foam Core + Reinforced Protection

Precision Production: Foam Uniformity & Composite Bonding

1. Foam Silicone Core Formulation & Extrusion: High-purity silicone is mixed with controlled foaming agents, thermal stabilizers, and application-specific additives (flame retardants, UV stabilizers). The mixture is extruded into a foam core via precision equipment, with temperature and pressure strictly regulated to ensure uniform cell distribution and density. Platinum vulcanization is used for odorless, non-toxic results—critical for food, medical, and indoor applications.
2. Composite Layer Application: Based on performance needs, the foam core is coated with a reinforced outer layer. For insulation-focused applications, a smooth silicone outer layer is applied to enhance water resistance; for high-wear scenarios, polyester braiding is woven around the core to boost tensile strength; for industrial use, an anti-abrasion elastomer coating is added to resist cuts and friction.
3. Integrated Curing & Bonding: The composite tubing undergoes a dual-stage curing process to ensure tight bonding between the foam core and outer layer, preventing delamination. The first stage cures the foam core to lock in cell structure, while the second stage fuses the outer layer to the core, enhancing structural integrity. Slow cooling ensures the tubing retains flexibility and insulation performance.
4. Multi-Dimensional Quality Inspection: Each batch is tested for thermal insulation efficiency, compression rebound rate (≥90%), water absorption, and dimensional accuracy (±0.1mm for critical sizes). Additional tests include abrasion resistance (≥30,000 cycles without core damage), temperature stability (-60℃ to 230℃), and leak-proof performance (IP67 to IP68 ratings). Food-grade versions undergo migration and sensory tests to ensure safety.

Key Traits & Performance Advantages

• Exceptional Thermal Insulation: Closed-cell foam core minimizes heat transfer, making it ideal for HVAC ducts, refrigeration lines, and electronic component insulation. Maintains stable insulation performance across -60℃ to 230℃ (-76°F to 446°F).
• Superior Sealing & Flexibility: Compressible foam core adapts to gaps and irregular surfaces, achieving leak-proof sealing against air, water, and dust. Retains flexibility after repeated compression, with permanent deformation rate ≤5%.
• Reinforced Durability: Outer composite layer resists abrasion, tearing, and environmental damage, protecting the foam core from harsh conditions. Closed-cell structure prevents moisture absorption and mold growth, extending service life in humid environments.
• Multi-Functional Protection: Combines insulation, sealing, and shock absorption in one component. Flame-retardant versions (UL 94 V-0) self-extinguish within 10 seconds, enhancing safety in industrial and electronic applications.

Industry-Specific Applications

• HVAC & Refrigeration: Duct insulation, refrigerant line wrapping, and air conditioner sealing. Reduces heat loss/gain, improves energy efficiency, and prevents condensation buildup.
• Electronics & New Energy: Battery pack insulation, LED fixture sealing, and circuit board thermal protection. Shields components from temperature fluctuations and moisture intrusion.
• Automotive & EVs: Engine compartment insulation, wiring harness protection, and HVAC system sealing. Withstands under-hood heat and resists oil/coolant corrosion, while reducing noise transmission.
• Industrial Machinery: Pipe insulation, equipment sealing, and vibration dampening. Protects machinery from extreme temperatures and prevents dust/contaminant intrusion into moving parts.
• Food & Pharmaceutical: Refrigerated transport lines, sterilization equipment insulation, and packaging sealing. FDA-compliant material ensures safety for food contact, with insulation maintaining temperature stability for perishables.

Custom OEM/ODM & Efficient Service

• Full Specification Customization: Accept drawings/samples (来图来样加工) – choose inner/outer diameter (3mm-80mm), wall thickness, foam density (0.3-0.65g/cm³), outer layer type (silicone coating/braiding/elastomer), color (black, white, gray, or custom RAL codes), and length (up to 100m/roll).
• Specialized Formulations: Request ultra-low thermal conductivity (≤0.05W/m·K), flame-retardant (UL 94 V-0), food-grade (FDA/LFGB), or high-temperature (260℃ short-term) versions for niche applications.
• Rapid Prototyping: Samples ready in 7-10 days for standard specs; 10-14 days for custom foam densities or composite layer combinations. Free sample testing includes insulation efficiency, compression rebound, and sealing performance checks.
• Scalable Delivery: Backed by automated extrusion and composite coating lines, we handle small-batch prototyping (10m+) and large-volume production (10,000m+) with on-time shipping guarantees.
• One-Stop Support: Dedicated technical team assists with foam density optimization, outer layer selection, and performance rating adjustment. 24/7 customer service provides batch traceability, certification support, and order status updates.

Tengye: Your Trusted Partner for Composite Foam Silicone Tubing