JNS: Precision Sealing, Reliable Motion
– Engineered for Gas Springs & Dampers
Ningguo Jnsseals Sealing Technology Co., Ltd. is dedicated to gas spring and damper sealing technologies, including high-quality O-rings. Since 2019, we have been delivering reliable, durable, and cost-effective sealing solutions to the automotive, furniture, home appliance, medical equipment, and construction industries. Whether facing extreme wear, high temperatures, or demanding long-life requirements, JNS is built to perform.
We believe that a great seal is not just a component—it's a promise. With automated smart manufacturing, eco-friendly processes, and rigorous quality control, JNS products excel in sealing performance, durability, and value. Choose JNS for stability, safety, and trust that lasts.

High-temperature and oil resistance: In high-temperature, high-oil environments such as engines and transmissions, rubber rings maintain long-term elasticity and prevent fluid leakage, ensuring stable powertrain operation.
Vibration-resistant sealing: Withstand continuous vibration and impact during vehicle operation, maintaining sealing integrity without loosening or failure.
Wide temperature range adaptability: From severe winter cold to summer heat, rubber rings perform consistently, ensuring safe vehicle operation under various climatic conditions.

Silent cushioning: In gas spring lift chairs, folding mechanisms, washing machine dampers, compressor vibration isolators, and similar applications, rubber rings provide cushioning and noise reduction, improving user comfort and experience.
Waterproof and leak-proof: In washing machines, dishwashers, water purifiers, and other appliances, rubber rings effectively prevent water and detergent leakage, protecting electrical safety.
Temperature and aging resistance: Rubber rings in refrigerators, air conditioners, and other refrigeration equipment withstand low temperatures and refrigerant corrosion without hardening or cracking over long-term use; rubber rings in furniture components are also wear-resistant and durable, extending product life.
Aesthetically friendly: Rubber ring colors can be customized to coordinate with furniture or appliance design, combining functionality with appearance.

Good biocompatibility: Made of medical-grade silicone and other materials, non-toxic and non-irritating, suitable for safe contact with human tissue or medical fluids.
Sterilization resistance: Withstand common medical sterilization methods such as high-temperature steam, ethylene oxide, and gamma radiation without deformation or premature aging.
High cleanliness, no leachable substances: Materials undergo purification treatment to ensure no harmful substances are released into the medium, ensuring patient safety.

Extreme environment adaptability: Under extreme conditions such as high temperature, low temperature, vacuum, and radiation, special rubber rings maintain sealing performance, ensuring aircraft safety.
Low outgassing properties: Using low-outgassing materials to prevent volatile contaminants from affecting precision instruments or optical equipment.
Long-life, maintenance-free: Aerospace equipment requires long maintenance intervals; rubber rings offer excellent aging resistance and compression set resistance.

High-pressure sealing capability: In hydraulic systems, pneumatic systems, and high-pressure pipelines, rubber rings withstand high-pressure fluctuations and prevent medium leakage.
Long wear-resistant life: For machinery with frequent reciprocating motion, wear-resistant rubber materials significantly extend equipment maintenance intervals.
Wide media compatibility: Resistant to hydraulic oil, lubricating oil, coolant, water, air, and various industrial media, offering broad application range.

Curtain wall system sealing: In glass curtain walls, stone curtain walls, and similar structures, rubber rings accommodate thermal expansion and contraction caused by temperature changes, maintaining long-term sealing stability and preventing moisture ingress.
HVAC systems: At ventilation duct and air conditioning pipe connections, rubber rings prevent leakage of hot or cold air, improving energy efficiency while providing vibration damping and noise reduction.
Pipe connection sealing: In building water supply & drainage and fire protection piping systems, rubber rings (such as O-rings and gaskets) are used for fitting interfaces, offering easy installation, pressure resistance, durability, and effective leak prevention.