Tengye | NBR O-Ring Seals NBR O-ring seals (Nitrile Butadiene Rubber, also known as Buna-N) are the most widely used elastomeric sealing rings for oil-containing and hydraulic systems. Manufactured in our strong factory with premium raw materials, every NBR O-ring is precision molded to deliver tight, reliable sealing in demanding industrial working environments.
We are a professional silicone & rubber sealing manufacturer focused on precision molded parts. All NBR O-rings are produced with high-grade nitrile rubber compounds, with no reliance on branded raw material suppliers. Strict incoming material inspection is carried out before every production run, ensuring consistent raw quality and laying a solid foundation for stable batch-to-batch performance.
Our NBR O-rings are manufactured via compression molding technology. The complete production flow includes: compound mixing → preforming → precision mold loading → vulcanization under controlled temperature, pressure and time → deflashing → dimensional inspection → appearance sorting → packaging. This disciplined process minimizes compression set, controls ring roundness and cross-section tolerance, and delivers clean, flash-free surfaces for reliable sealing.
✅ Excellent resistance to mineral oil, fuel, grease and hydraulic fluids ✅ Good tensile strength, abrasion resistance and air-tightness ✅ Standard working temperature: -30°C to +100°C ✅ Special formulation extends range to -40°C ~ +120°C for short-time peak use ✅ Suitable for static and mild dynamic sealing ✅ Note: not recommended for long-term ozone, UV and strong polar solvent exposure
NBR O-rings are widely adopted in hydraulic & pneumatic systems, automotive fuel and lubrication assemblies, gearboxes, pumps, valves, compressors, general industrial machinery and MRO sealing kits. They perform reliably in oil-exposed, pressure-bearing and temperature-fluctuating environments, making them the most cost-effective general-purpose sealing choice for oil-containing conditions.
We support custom production according to your drawings or samples, accepting OEM and ODM orders. ✅ Fast quotation ✅ Rapid sample delivery ✅ Stable lead time guarantee ✅ One-stop silicone & rubber sealing service and efficient engineering solutions
At Tengye, customers always come first. Quality and service represent our value and responsibility. We take product performance as our goal and quality as our core. International service standards are our feature and mission. We always follow the business philosophy: Integrity First, Quality First, Service First, and keep delivering premium sealing solutions for global buyers.
Contact us now to get your custom NBR O-ring seals quotation and free samples.
