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Product Description

Product Overview

Silicone‑belt steel‑clamp sealing strips (steel‑wrapped silicone seals, metal‑frame silicone strips) feature a galvanized steel strip or stainless‑steel clamp as the internal support framework, with a high‑elasticity silicone extrusion molded seamlessly over the exterior. The steel clamp incorporates an inward‑tightening snap‑fit mechanism, leveraging the rigidity of the metal to provide robust clamping and secure fixation, while the outer silicone layer ensures sealing, cushioning, thermal insulation, and water resistance. Combining the dimensional stability of metal reinforcement with the temperature‑resistant elasticity of silicone, these products resist deformation and offer firm, drop‑proof installation. They are widely used for sealing applications in ovens, baking chambers, industrial machinery, locomotives, control cabinets, doors and windows, purification equipment, and more, and can be customized in multiple colors, food‑grade formulations, and flame‑retardant, high‑temperature‑resistant variants.

Internal structural components

Inner steel hoop framework

It is available in two versions: galvanized steel strip and 304 stainless steel strip. The steel strip is formed by stamping and features continuous snap‑on teeth, offering high toughness, resistance to bending and deformation, stable clamping force, and long‑term performance without loosening. The stainless steel version is rust‑proof and corrosion‑resistant, making it ideal for humid or acidic/alkaline environments.

Intermediate transition adhesive layer

The steel strip is tightly laminated with silicone rubber, ensuring no delamination; it remains intact under repeated opening and closing as well as compression, with high tear resistance.

Outer silicone sealing layer

Molded as a single piece, available in two options: solid dense silicone or foamed silicone. Solid silicone offers excellent wear and pressure resistance, while foamed silicone provides superior softness, cushioning, sound insulation, and thermal insulation.

Material Grading

Industrial standard silicone model

Suitable for standard equipment, cabinets, and conventional ovens; offers excellent value, with superior aging resistance, water resistance, and dustproof performance.

Food-grade silicone (LFGB)

Odorless and free of leachables, it is safe for contact with food-processing equipment, commercial bakery ovens, and sterilization cabinets, and can withstand high-temperature steaming and boiling.

High-temperature-resistant silicone model

Suitable for continuous use at 200°C over the long term and with short-term exposure to temperatures as high as 250°C; it does not yellow or soften, and is specially designed for industrial high-temperature ovens.

Flame-retardant silicone model

Self-extinguishing when removed from the flame, low-smoke and halogen-free, suitable for sealing distribution cabinets, new-energy equipment, and high-temperature electrical devices.

Product Advantages

The built-in steel hoop self‑clamps, ensuring a secure installation that won’t come loose.

The steel clamp features built-in snap‑fit teeth that lock directly into sheet‑metal slots and equipment door frame grooves, eliminating the need for adhesives or screws. Its metal frame delivers consistent clamping force, ensuring it remains secure and does not loosen or shift even with frequent opening and closing.

Combines soft and hard materials, maintaining its shape without deformation.

Pure silicone strips tend to collapse and lose their resilience under prolonged compression, whereas steel‑reinforced frames maintain a permanent shape, ensuring consistent sealing gaps and preventing air or water leakage over long-term use.

All‑round protection with a silicone outer layer

Resistant to extreme temperatures—ranging from -60°C to 200°C—remaining flexible in freezing conditions and odorless at high temperatures; waterproof, dustproof, soundproof, and thermally insulating, effectively blocking the exchange of hot and cold air for outstanding heat‑retention and energy‑saving performance.

Long service life with excellent aging resistance

Silicone is resistant to UV radiation, ozone, and rain; it remains crack‑free and does not chalk when used year-round in outdoor and high‑temperature applications. Stainless steel clamps are rust‑proof and suitable for humid environments.

Cushioned noise reduction, impact‑resistant edge guards

When the door closes, the silicone layer provides flexible cushioning, reducing metal‑on‑metal impact noise while absorbing shock and protecting the door frame and cabinet corners.

Easy to disassemble and convenient for maintenance

It can be disassembled and replaced by hand, and during subsequent maintenance, there’s no need to remove the door frame panels—simply replace the weatherstripping strip separately, resulting in low maintenance costs.

Environmental safety

Free of phthalates and heavy metals, this food-grade material is safe for direct contact with food-processing equipment and does not emit harmful substances.

Hebei Qunwo Rubber Products Co., Ltd. We specialize in manufacturing a wide range of sealing strips and seals, including silicone sealing strips and seals, PVC sealing strips, rubber and plastic products, EPDM foam strips, EPDM seals, automotive composite sealing strips, marine and cold‑storage sealing strips, self‑adhesive high‑temperature and oil‑resistant sealing strips, oil‑resistant sealing tubes, mechanical sealing strips, engineering sealing strips, door and window sealing strips, custom‑shaped sealing strips, and various colored sealing strips. We also offer tailor‑made solutions to meet our customers’ specific needs. Samples can be mailed, drawings can be sent, or you can provide the profile directly; our experienced technicians will design the most suitable door and window sealing strips based on your specifications, ensuring that we satisfy the diverse requirements of each client. We maintain rigorous quality control and continuously enhance our after‑sales service, confident that our collaboration will be both enjoyable and mutually beneficial.

Test equipment

Customization Process

We provide a complete one-stop custom process: from requirement communication, design and sampling, to mass production, delivery and after-sales support, ensuring efficient and reliable customized sealing solutions.

Inquiry & Product Selection

Confirm Material, Size & Performance

Sample / Drawing / Profile Confirmation

Design & Quotation

Mold & Sample Making

Sample Approval & Order

Production & Quality Control

Delivery Confirmation

Silicone tape steel hoop sealing strip

Silicone‑belt steel‑clamp sealing strip: it features a galvanized steel or stainless‑steel clamp as the internal support framework, with a high‑elasticity silicone extrusion molded in one piece over the exterior. The steel clamp incorporates an inward‑tightening snap‑lock mechanism, leveraging the metal’s rigidity to achieve secure, robust clamping and fixation. The outer silicone layer provides sealing, cushioning, thermal insulation, and waterproofing. Combining the dimensional stability of metal reinforcement with the temperature‑resistant elasticity of silicone, it resists deformation and ensures a firm, drop‑proof installation.

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Product Description

Product Overview

Silicone‑belt steel‑clamp sealing strips (steel‑wrapped silicone seals, metal‑frame silicone strips) feature a galvanized steel strip or stainless‑steel clamp as the internal support framework, with a high‑elasticity silicone extrusion molded seamlessly over the exterior. The steel clamp incorporates an inward‑tightening snap‑fit mechanism, leveraging the rigidity of the metal to provide robust clamping and secure fixation, while the outer silicone layer ensures sealing, cushioning, thermal insulation, and water resistance. Combining the dimensional stability of metal reinforcement with the temperature‑resistant elasticity of silicone, these products resist deformation and offer firm, drop‑proof installation. They are widely used for sealing applications in ovens, baking chambers, industrial machinery, locomotives, control cabinets, doors and windows, purification equipment, and more, and can be customized in multiple colors, food‑grade formulations, and flame‑retardant, high‑temperature‑resistant variants.

Internal structural components

Inner steel hoop framework

It is available in two versions: galvanized steel strip and 304 stainless steel strip. The steel strip is formed by stamping and features continuous snap‑on teeth, offering high toughness, resistance to bending and deformation, stable clamping force, and long‑term performance without loosening. The stainless steel version is rust‑proof and corrosion‑resistant, making it ideal for humid or acidic/alkaline environments.

Intermediate transition adhesive layer

The steel strip is tightly laminated with silicone rubber, ensuring no delamination; it remains intact under repeated opening and closing as well as compression, with high tear resistance.

Outer silicone sealing layer

Molded as a single piece, available in two options: solid dense silicone or foamed silicone. Solid silicone offers excellent wear and pressure resistance, while foamed silicone provides superior softness, cushioning, sound insulation, and thermal insulation.

Material Grading

Industrial standard silicone model

Suitable for standard equipment, cabinets, and conventional ovens; offers excellent value, with superior aging resistance, water resistance, and dustproof performance.

Food-grade silicone (LFGB)

Odorless and free of leachables, it is safe for contact with food-processing equipment, commercial bakery ovens, and sterilization cabinets, and can withstand high-temperature steaming and boiling.

High-temperature-resistant silicone model

Suitable for continuous use at 200°C over the long term and with short-term exposure to temperatures as high as 250°C; it does not yellow or soften, and is specially designed for industrial high-temperature ovens.

Flame-retardant silicone model

Self-extinguishing when removed from the flame, low-smoke and halogen-free, suitable for sealing distribution cabinets, new-energy equipment, and high-temperature electrical devices.

Product Advantages

The built-in steel hoop self‑clamps, ensuring a secure installation that won’t come loose.

The steel clamp features built-in snap‑fit teeth that lock directly into sheet‑metal slots and equipment door frame grooves, eliminating the need for adhesives or screws. Its metal frame delivers consistent clamping force, ensuring it remains secure and does not loosen or shift even with frequent opening and closing.

Combines soft and hard materials, maintaining its shape without deformation.

Pure silicone strips tend to collapse and lose their resilience under prolonged compression, whereas steel‑reinforced frames maintain a permanent shape, ensuring consistent sealing gaps and preventing air or water leakage over long-term use.

All‑round protection with a silicone outer layer

Resistant to extreme temperatures—ranging from -60°C to 200°C—remaining flexible in freezing conditions and odorless at high temperatures; waterproof, dustproof, soundproof, and thermally insulating, effectively blocking the exchange of hot and cold air for outstanding heat‑retention and energy‑saving performance.

Long service life with excellent aging resistance

Silicone is resistant to UV radiation, ozone, and rain; it remains crack‑free and does not chalk when used year-round in outdoor and high‑temperature applications. Stainless steel clamps are rust‑proof and suitable for humid environments.

Cushioned noise reduction, impact‑resistant edge guards

When the door closes, the silicone layer provides flexible cushioning, reducing metal‑on‑metal impact noise while absorbing shock and protecting the door frame and cabinet corners.

Easy to disassemble and convenient for maintenance

It can be disassembled and replaced by hand, and during subsequent maintenance, there’s no need to remove the door frame panels—simply replace the weatherstripping strip separately, resulting in low maintenance costs.

Environmental safety

Free of phthalates and heavy metals, this food-grade material is safe for direct contact with food-processing equipment and does not emit harmful substances.