In new energy thermal management systems, new energy vehicle high-voltage harnesses, industrial heating equipment and electrical control cabinets, pipelines and wiring harnesses bear long-term continuous high-temperature radiation, which easily causes heat loss, surface overheating, component thermal aging and hidden fire hazards. High temperature resistant silicone sponge tube is a flexible tubular protective material specially developed for long-term high-temperature working conditions. It adopts closed-cell foaming structure to form stable air thermal barrier inside the tube wall, with excellent high-temperature stability, heat insulation and buffer protection performance. Tengye produces high-performance high temperature resistant silicone sponge tubes through integrated extrusion foaming vulcanization process, providing long-term anti-scald, heat preservation and safety protection for all kinds of high-temperature fluid pipelines and wiring harness systems.
High Heat Resistant Silicone Raw Material & Special Foam Extrusion Process
Our high temperature resistant silicone sponge tube adopts imported high-purity heat-resistant silicone base material, optional halogen-free low-smoke flame retardant formula, non-toxic, odorless and environmentally friendly, specially optimized for long-term high-temperature cycle environment. We adopt one-step co-extrusion closed-cell foaming molding technology to form uniform and delicate honeycomb pores inside the tube wall, with smooth and compact inner and outer surfaces, no powder shedding, no delamination after long-term bending and extrusion. The foaming density and hardness can be adjusted according to customer heat insulation and assembly requirements to balance soft wrapping performance and high-temperature stability.
This professional high temperature resistant silicone sponge tube has an ultra-wide operating temperature range of -60℃ to 280℃, stable long-term use under continuous high-temperature baking, steam environment and cold-hot alternating impact, no hardening, cracking, shrinkage or elasticity attenuation. It has outstanding chemical inertness, resisting corrosion from engine oil, battery electrolyte, weak acid and alkaline cleaning agents, as well as excellent UV and ozone aging resistance, adapting to indoor and outdoor long-term harsh operation. All products fully comply with RoHS 2.0, REACH, UL 94 V-0 flame retardant standards, and can provide complete SGS and Intertek third-party high-temperature performance test reports to meet global industrial equipment safety specifications.
Core Performance Advantages Focused on High-Temperature Protection
Aiming at the pain points of ordinary foam tubes easy to soften and fail at high temperature, our high temperature resistant silicone sponge tube realizes comprehensive performance upgrade, perfectly matching various high-temperature pipeline protection scenarios:
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Ultra-Stable High & Low Temperature Resistance: Long-term stable operation at -60℃~280℃, short-term instantaneous temperature resistance up to 300℃, far exceeding the heat resistance limit of ordinary foam sleeves. It maintains stable softness and structural integrity under long-term heat radiation, no performance degradation, suitable for engine compartment, industrial oven and other continuous high-temperature working areas.
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Efficient Thermal Insulation & Anti-Scald Protection: Dense closed-cell air insulation layer with low thermal conductivity ≤0.06W/m·K, effectively locks internal heat and isolates external high-temperature heat invasion, reduces pipeline surface temperature to avoid maintenance scald accidents, and prevents surrounding plastic and electronic components from thermal aging failure.
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UL 94 V-0 Top-Tier Flame Retardancy: Flame retardant grade reaches UL 94 V-0, self-extinguishes quickly after leaving open flame, no molten dripping and no toxic dense smoke release, effectively cuts off flame spread along pipelines and wires, reduces equipment fire risk caused by overheating and short circuit.
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Waterproof & Dustproof Insulation Barrier: Compact foam outer skin blocks moisture, water vapor and fine dust penetration, prevents internal wire short circuit and pipeline metal corrosion in humid workshop and outdoor environment, keeps stable insulation and high-temperature resistance all year round.
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Flexible Shock Absorption & Wear Resistance: Soft high-elastic texture, arbitrarily bendable to adapt to complex equipment pipeline layout; porous buffer layer absorbs vibration and friction impact during equipment operation, protects internal wires and fluid pipelines from scratch, collision and abrasion damage.
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Low Compression Set & Long-Lasting Resilience: Compression set ≤5%, no permanent deformation after long-term wrapping and clamping, always keeps tight fitting with pipelines, high-temperature resistance and heat insulation functions will not fail due to long-term extrusion deformation.
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Non-Corrosive & Ultra-Long Service Life: Neutral chemically inert material, no chemical reaction with metal, plastic, wire insulation and other contact materials; strong anti-oxidation and weather resistance, stable comprehensive performance for 8-12 years under alternating indoor and outdoor temperature environments.
Main Application Scenarios Requiring High-Temperature Protection
Our high temperature resistant silicone sponge tube is widely applied in all kinds of equipment pipelines and high-voltage harnesses with strict high-temperature resistance requirements, covering new energy, automobile, industrial machinery and electrical power industries:
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New Energy Industry: High-temperature heat insulation wrapping for power battery high-voltage harnesses, energy storage liquid cooling pipelines, battery module internal wiring and energy storage cabinet thermal management pipes, isolate battery heat accumulation and reduce thermal runaway risks.
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New Energy Vehicle Industry: Thermal insulation anti-scald protection for engine compartment high-temperature pipelines, motor cooling pipes, chassis high-voltage wiring harnesses and exhaust auxiliary pipelines, adapt to vehicle vibration and long-term high-temperature alternating harsh environment.
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Industrial High-Temperature Heating Equipment: Constant temperature thermal barrier for industrial oven steam pipes, heating machine hot oil pipelines, boiler water delivery pipes and mechanical hydraulic high-temperature pipelines, reduce heat loss and improve equipment energy efficiency.
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Electrical & Power Control Equipment: High-temperature insulation protection for control cabinet internal wiring, inverter heating pipelines, power supply high-voltage lines and precision instrument circuits, avoid electrical component aging failure under continuous heat load.
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Catering & Food Processing Equipment: High-temperature anti-scald insulation sleeves for bakery oven pipelines, dairy sterilization equipment steam pipes and commercial hot water circulation pipelines, support repeated high-temperature steam cleaning and disinfection.
Custom OEM/ODM Service
We provide comprehensive personalized customization solutions to match diversified pipeline sizes, layout structures and high-temperature resistance grade demands of different equipment, supporting small-batch R&D trial production and large-scale continuous mass delivery:
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Size Specification Customization: Customize inner diameter, outer diameter, wall thickness, total length and color; support ultra-thin wall and thick wall special size extrusion processing per customer drawings or physical pipeline samples.
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Formula Performance Tuning: Adjust foaming density and hardness, upgrade ultra-high temperature resistance and flame retardant grade; optional anti-static treatment, single-sided adhesive backing and surface wear-resistant upgrading to improve assembly efficiency.
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Post-Processing Customization: Support fixed-length cutting, segmented opening, special-shaped slitting and bending forming to satisfy automatic assembly demands of complex equipment pipeline layout.
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Rapid Sampling & Stable Delivery: Deliver customized samples within 7-12 days for pipeline matching and high-temperature performance testing, equipped with complete quality traceability system to guarantee consistent batch quality and on-time delivery.
Precautions for Use
To fully retain the core high-temperature resistance, heat insulation and flame retardant performance of high temperature resistant silicone sponge tube and extend service life, please follow standardized operation specifications during installation, use and storage:
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Before installation, thoroughly wipe wrapped pipeline and wire surfaces to keep dry, smooth and free of oil, dust and burr impurities, ensure tight fit and stable high-temperature heat insulation effect.
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Avoid excessive stretching and sharp metal scratching during installation to prevent damage to tube wall internal closed-cell pore structure, resulting in attenuation of heat insulation and high-temperature resistance performance.
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Reasonably control bending radius during wiring, avoid long-term over-compression to prevent permanent deformation and loss of tight wrapping and heat insulation performance.
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Store products in cool, dry and ventilated warehouse before installation, keep away from high-temperature heat sources, open flames and corrosive industrial chemicals to avoid premature aging and performance decline.
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Select corresponding wall thickness, density and flame retardant grade according to actual pipeline long-term operating temperature and service environment to match required high-temperature protection standard.
Strict Quality Control System
Adhering to the management tenet of "quality first, safety supreme", we implement full-process strict quality control for high temperature resistant silicone sponge tubes from raw material feeding to finished product delivery, to ensure every batch of products meets industrial high-standard high-temperature protection requirements:
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Raw Material Inspection: 100% full inspection of high heat resistant silicone raw materials, strictly test long-term heat resistance, flame retardant grade, environmental protection indicators and chemical stability, unqualified raw materials are prohibited from entering production lines.
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In-Process Monitoring: Real-time dynamic control of extrusion temperature, foaming ratio and dimensional tolerance, to guarantee uniform tube wall pores, smooth inner and outer surfaces, no defects such as bubbles, cracks and uneven wall thickness, consistent high-temperature resistance performance of each tube section.
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Finished Product Comprehensive Testing: Conduct long-term high-temperature aging cycle test, thermal conductivity test, UL flame retardant test, compression rebound test and waterproof insulation test for each batch, issue complete high-temperature safety certification documents and test reports for customer inspection.
Tengye: Your Trusted High-Temperature Silicone Sponge Tube Partner
At Tengye, we focus on R&D, production and customized service of high-performance high temperature resistant silicone sponge tubes. Relying on mature integrated foaming extrusion technology, full-process strict high-temperature performance testing and professional technical after-sales support, we supply stable, energy-saving and long-lasting pipeline heat insulation solutions for global new energy, automobile, electrical power and industrial equipment manufacturers. We commit to solving customer pain points including pipeline high-temperature aging, heat loss and equipment fire hazards, and build long-term stable win-win cooperative relations. Contact us today for free customized samples, complete safety certification documents and exclusive mass production quotation!
