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ProductsHebei Qunwo Rubber Products Co., Ltd. specializes in the production of a wide range of sealing strips and seals, including silicone sealing strips and silicone 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
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About UsWe rigorously control product quality and continuously enhance our after-sales service, confident that our collaboration will be both enjoyable and ultimately mutually beneficial.
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ServiceHebei Qunwo Rubber Products Co., Ltd. has been deeply engaged in the rubber industry for many years, firmly believing that high-quality products are the cornerstone of a company’s success, while comprehensive services serve as a solid bridge connecting the company with its customers.
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BlogAs a company deeply rooted in the rubber products industry, Qunwo Rubber has consistently adhered to the philosophy of “quality first, innovation-driven,” meticulously cultivating and excelling in multiple niche markets, including tires, industrial rubber components, and rubber seals.
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ContactHebei Qunwo Rubber Products Co., Ltd. has earned industry recognition for its integrity, strength, and product quality. We warmly welcome friends from all sectors to visit, offer guidance, and discuss business opportunities.
- Product Description
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Product Introduction
NBR sealing strips are synthetic rubber sealing products produced by copolymerizing acrylonitrile and butadiene monomers. Thanks to their excellent oil resistance, wear resistance, tear resistance, and high elasticity, they have become the most widely used and cost-effective general-purpose sealing material in both industrial and civil applications.
Core Material Properties
NBR performance is determined by the acrylonitrile (ACN) content, which can typically be adjusted within the range of **18%–50%**, directly balancing oil resistance, cold resistance, and elasticity:
High acrylonitrile content (36%–50%): Excellent oil resistance and good heat resistance, suitable for high-temperature, high-oil environments.
Medium acrylonitrile (26%–35%): Well-balanced performance, a common mainstream grade.
Low acrylonitrile (18%–25%): Excellent cold resistance (remains flexible down to −40°C), but poor oil resistance.Core Product Advantages
Outstanding oil resistance: Exhibits exceptional resistance to non‑polar oils such as mineral oil, fuel oil, hydraulic fluid, and lubricating oil; does not swell, deform, or lose its sealing integrity over time.
Excellent mechanical properties: high tensile strength, tear resistance, and wear resistance; suitable for both dynamic and static sealing.
Excellent airtightness: Effectively prevents the penetration of air, water, dust, and gases, with strong sealing stability.
Excellent resilience: High rebound rate after prolonged compression, resistant to permanent deformation, and long service life.
Outstanding value: comprehensive performance at an affordable price, ideal for large-scale industrial applications.
Excellent processability: easily extruded and molded, with the ability to customize any cross-section and length.Typical application areas
Automotive Industry: engine oil seals, fuel system seals, door/sunroof/trunk sealing strips, transmission gaskets
Construction machinery: seals for hydraulic cylinders, oil pumps, valves, and pneumatic components; oil-resistant and wear-resistant.
Rail Transit: Carriage door and window sealing, equipment vibration‑damping sealing, rail spacers
Ships / Petroleum: Oil pipeline seals, cargo hold seals, oil-resistant equipment gaskets
Home appliances: washing machines, dishwashers, refrigerator door seals—waterproof and dustproof.
Building doors and windows: thermal‑break aluminum and PVC‑u windows provide excellent sealing, sound insulation, dust resistance, and weather‑proofing.
Electrical Cabinets / Enclosures: Sealed distribution cabinets and communication cabinets, offering protection against water, dust, and insects.
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.
01
Inquiry & Product Selection
02
Confirm Material, Size & Performance
03
Sample / Drawing / Profile Confirmation
04
Design & Quotation
05
Mold & Sample Making
06
Sample Approval & Order
07
Production & Quality Control
08
Delivery Confirmation
NBR sealing strip
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- Product Description
-
Product Introduction
NBR sealing strips are synthetic rubber sealing products produced by copolymerizing acrylonitrile and butadiene monomers. Thanks to their excellent oil resistance, wear resistance, tear resistance, and high elasticity, they have become the most widely used and cost-effective general-purpose sealing material in both industrial and civil applications.
Core Material Properties
NBR performance is determined by the acrylonitrile (ACN) content, which can typically be adjusted within the range of **18%–50%**, directly balancing oil resistance, cold resistance, and elasticity:
High acrylonitrile content (36%–50%): Excellent oil resistance and good heat resistance, suitable for high-temperature, high-oil environments.
Medium acrylonitrile (26%–35%): Well-balanced performance, a common mainstream grade.
Low acrylonitrile (18%–25%): Excellent cold resistance (remains flexible down to −40°C), but poor oil resistance.Core Product Advantages
Outstanding oil resistance: Exhibits exceptional resistance to non‑polar oils such as mineral oil, fuel oil, hydraulic fluid, and lubricating oil; does not swell, deform, or lose its sealing integrity over time.
Excellent mechanical properties: high tensile strength, tear resistance, and wear resistance; suitable for both dynamic and static sealing.
Excellent airtightness: Effectively prevents the penetration of air, water, dust, and gases, with strong sealing stability.
Excellent resilience: High rebound rate after prolonged compression, resistant to permanent deformation, and long service life.
Outstanding value: comprehensive performance at an affordable price, ideal for large-scale industrial applications.
Excellent processability: easily extruded and molded, with the ability to customize any cross-section and length.Typical application areas
Automotive Industry: engine oil seals, fuel system seals, door/sunroof/trunk sealing strips, transmission gaskets
Construction machinery: seals for hydraulic cylinders, oil pumps, valves, and pneumatic components; oil-resistant and wear-resistant.
Rail Transit: Carriage door and window sealing, equipment vibration‑damping sealing, rail spacers
Ships / Petroleum: Oil pipeline seals, cargo hold seals, oil-resistant equipment gaskets
Home appliances: washing machines, dishwashers, refrigerator door seals—waterproof and dustproof.
Building doors and windows: thermal‑break aluminum and PVC‑u windows provide excellent sealing, sound insulation, dust resistance, and weather‑proofing.
Electrical Cabinets / Enclosures: Sealed distribution cabinets and communication cabinets, offering protection against water, dust, and insects.
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Small and Micro Enterprise Park in Wangguanzhuang Town, Qinghe County, Xingtai City, Hebei Province