Your Professional Thermal Insulations Supplier
SUNPASS SEALING TECH, founded in 1979, has 178 employees. Relying on more than 40 years of mature technology and experience , it specializes in the production of industrial sealing and thermal insulation materials. SUNPASS has a modern professional workshop of 12000M2, with more than 20 production lines such as graphite products, PTFE products, sealing gland packing, sealing gasket, glass fiber products, ceramic fiber products, rubber products and so on.
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Texturized Fiberglass FabricSunPass Texturized Fiberglass Fabric is crafted using yarn that undergoes a texturizing process to impart high temperature resistance and substantial strength following a puffing treatment. This
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Semi Raw and Semi Cooked Silicone Extruded FabricSunPass Semi-Raw and Semi-Cooked Silicone Extruded Fabric represents a unique material tailored for the manufacture of silicone rubber heaters.SunPass boasts the versatility to be personalized in a
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Anti-stick Silicone Rubber Extruded FabricSunPass Anti-stick Silicone Rubber Extruded Fabric is an exceptionally sophisticated composite material that elegantly harmonizes the resilient properties of silicone rubber with cutting-edge
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PTFE Conveyor BeltSunPass PTFE Conveyor Belt employs high-quality glass fiber and Kevlar as its foundational materials, intricately woven using specialized equipment, and subsequently coated with fine PTFE to produce
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PTFE Laminated BeltThe SunPass PTFE Laminated Belt, alternately recognized as the seamless bonding machine belt, represents a sophisticated integration of high-strength materials and advanced manufacturing techniques.
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PTFE Mesh BeltsSunPass PTFE Mesh Belts typically utilize high-quality fiberglass or Kevlar (aramid) as the foundational woven material, ensuring robust strength and resilience. Fiberglass provides exceptional
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PTFE Seamless BeltSunPass PTFE Seamless Belt represent a groundbreaking and highly efficient class of conveyor belts that have revolutionized material handling across diverse industries. These belts are meticulously
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Silicone Adhesive TapeSunPass Silicone Adhesive Tape is meticulously engineered to securely bind and unite silicone-coated papers, films, and a wide array of challenging-to-adhere surfaces, including those composed of
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Porous PTFESunPass Porous PTFE stands as a distinctive and innovative variety of Polytetrafluoroethylene (PTFE), prominently characterized by its unique porous structure. This particular form of PTFE is
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PTFE Adhesive TapeThis innovative tape seamlessly blends the exceptional qualities of traditional PTFE (Polytetrafluoroethylene) fabrics with the significantly enhanced durability provided by a robust backing
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Antistatic PTFE Adhesive TapeSunPass Antistatic PTFE Adhesive Tape is meticulously crafted through an innovative process that integrates carbon particles in a strategic and precise manner to ensure conductivity and impart
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PTFE Cloth AntistaticSunPass PTFE Cloth Antistatic stands as a testament to premium quality, embodying a fiberglass fabric that is engineered to meet the rigorous demands of diverse industrial applications. This
Why Choose Us
Foreign Trade Market
Customers are located in more than 100 countries and regions such as China, Russia, South Korea, Japan, Thailand, Saudi Arabia, Egypt, Spain, Germany, France, the Netherlands, Belgium, the United States, Mexico, Brazil, Australia, etc.
Our Certifications
We passed ISO9001 international quality system certification in April 2001 . In 2008 , the Special Equipment Manufacturing License (pressure pipe element) was issued for us by Chinese General Administration of Quality Supervision , Inspection and Quarantine . We have acquired OHSAS 1800 Occupational Health Safety Management System Certification and ISO14001 Environmental Management System Certification .
Advanced Equipment
The company has introduced an internationally advanced butyl rubber product production line, equippedwith a fully automatic coating machine, precision slitting equipment and an intelligent temperature controlsystem to ensure uniform product thickness and stable viscosity. The daily production capacity reaches 10,000 square meters to meet the needs of large-volume orders.
Professional customization capabilities and quick response
With an independent R&D team and flexible production lines, we can customize butyl adhesive products(aluminum foil tape,automotive sound insulation film, etc.) of different widths, thicknesses, and viscositiesThe proofing cycle only takes 3-5 days.
Thermal Insulations Specifications
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Item |
Heat insulation material |
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Main Structure |
1) Al / bubble / Al (bubble: ¢ : 10mm, H: 4mm or H: 2.5mm) |
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Thickness |
4mm or customzied |
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Roll Size |
1.2*40m per roll |
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Reflectivity |
97% |
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Bubble Size |
10*2.5/10*3/10*4/10*5/20*7/25*8/25*10 |
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Logo Printing |
OEM Available |
Features
Dielectric Strength
Dielectric strength describes the amount of voltage an insulation material can withstand before breaking down. Thermal and electrical insulation materials need to be able to resist the voltage of electricity they will be exposed to ensure the insulated part or component continues to work as intended.
Thermal Conductivity
Thermal conductivity measures how well an item allows heat to pass through it. Heat moves between objects, and sometimes can move extremely quickly causing a greater and greater increase in heat, eventually leading to extremely dangerous thermal runaway.

Temperature Resistance
Thermal insulation materials also need to be able to withstand high temperatures, as they are used to prevent heat from passing from one area to another.
Thermal Expansion
Thermal expansion refers to the amount a material stretches or expands when it is exposed to heat. In some instances, if an insulator expands too much when it is exposed to heat, the system or battery could be compromised and will not function properly.
Type
Cellulose: It is mix of re-cycled paper products treated with fire retardants, which is why it is considered an eco-friendly thermal resistant material. Cellulose is generally used in attics and walls, creating a dense layer of insulation, thereby reducing air leakage.
Spray Foam: Spray foam insulation is developed from 2 types of composite materials, polyurethane, and isocyanate. It is a versatile material that expands upon application. It has high thermal resistance and is ideal to fill gaps and seal leaks around pipes and wires.
Mineral Wool: Mineral wool is composed of two different types of wool: rock wool and slag wool. It offers excellent thermal resistance and soundproof qualities while also being non-combustible.
Foam Board: It is made from polystyrene, polyisocyanurate or polyurethane. It is typically used in foundation walls and floors due to its high insulation value and strength. Foam board provides a high level of thermal resistance while being lightweight, but they can be more expensive than other insulation materials.
Applications
Residential Building Construction: Insulation materials are used in walls, ceilings, roofs, and floors to keep homes warm in winter and cool in summer, often reducing energy consumption by up to 70%. Common materials include fiberglass, mineral wool, and polystyrene.
Industrial Processes & Power Plants: Thermal insulation is critical in industrial settings to cover boilers, pipes, and turbines. This minimizes heat loss, increases the efficiency of steam systems, and acts as safety insulation to protect workers from hot machinery.
Commercial Infrastructure: Large-scale insulation is used in warehouses, offices, and commercial buildings to maintain consistent, energy-efficient indoor temperatures.
HVAC & Refrigeration Systems: Insulation covers AC units, furnaces, and refrigeration pipes to maintain temperature differentials.
Shipping
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Packing Type |
Inner PE bag + outer carton box, (100 ~1000) pieces/bag; 5~10 bag /carton box or customized according to specific requirements from clients |
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Packing Material |
Inner PE film + outer carton box, palletized for extra reinforcement if necessary |
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Shipping Marks |
Neutral packing with printed marks. |
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Lead Time |
Production lead time: 1~5 days after receiving of PO and advance payment (30%) |
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Delivery Time |
100% meet customer delivery requirement and can be expedited for special case |
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Freight |
Sea (FCL & LCL) or air freight |
Our Certifications






FAQ
As one of the most professional thermal insulations manufacturers and suppliers in China, we're featured by quality products and good service. Please rest assured to buy high-grade thermal insulations from our factory.
