High-Performance NBR Ring & Custom Nitrile O-Rings: The Ultimate Industrial Seal
In the world of fluid power and mechanical assembly, the NBR ring is the undisputed workhorse. Whether it's preventing oil leaks in a hydraulic system or ensuring a watertight seal in a kitchen faucet, the quality of your Nitrile rubber (Buna-N) components dictates the lifespan of your product.
At Xiamen Jinshun Sealing Technology, we've spent over two decades perfecting the art of the NBR O-Ring. We don't just "make" rings; we engineer sealing solutions that withstand friction, pressure, and aggressive oils. As a leading manufacturer in China, we provide international buyers with a rare combination of cost-efficiency and uncompromising quality.
Why the NBR Ring is the Global Standard
Nitrile (NBR), a copolymer of butadiene and acrylonitrile, is the most widely used elastomer for a reason. It offers an incredible balance of physical properties that make it ideal for high-volume industrial use.
- Oil & Fuel Resistance: Exceptional performance when exposed to petroleum-based oils, greases, and hydraulic fluids.
- Mechanical Strength: High tensile strength and abrasion resistance, meaning it doesn't wear down easily in moving parts.
- Cost-Effective: It provides professional-grade sealing at a fraction of the cost of specialty fluoroelastomers.
- Versatility: From Metric sizes to AS568 American Standards, our NBR rings fit almost any global machinery requirement.
Custom Capabilities for International Partners
While we stock a massive range of standard sizes, our strength lies in Custom Nitrile O-Ring manufacturing. We understand that every project has unique constraints.
- Size Range: We can produce rings up to 2000 mm in diameter.
- Hardness Customization: Choose from 40 to 90 Shore A depending on your pressure requirements.
- Color Matching: Beyond standard black, we produce NBR rings in blue, green, brown, or any custom color for brand identification or assembly safety.
- Special Profiles: We go beyond the O-ring to supply Nitrile V-Rings and X-Rings for specialized sealing interfaces.
Technical Specifications
We adhere to ISO 9001:2015 and ISO 14001:2015 standards, ensuring every batch meets your strict technical data sheets.
| Parameter | Specification / Performance |
| Temperature Range | -40°C - +120°C |
| Material Types | Standard Nitrile, Food-Grade NBR, Low-Temp NBR |
| Hardness Range | 40 to 90 Shore A |
| Standards Meet | AS568, BS, Metric, JIS |
| Compliance | NSF, FDA, WRAS, ROHS, REACH |
| Resistance | Aliphatic hydrocarbons, Mineral oils, Vegetable oils, HFA/HFB/HFC fluids |
Safety and Compliance
As a strategic partner to well-known international enterprises, Jinshun Sealing prioritizes transparency and safety. Our Food Grade Nitrile O-Rings are essential for the drinking water and sanitary industries, meeting the stringent requirements of:
- NSF / FDA / LFGB: For safe contact with food and potable water.
- WRAS / KTW-W270 / ACS: For European and UK water system compliance.
Frequently Asked Questions (FAQs)
Q: Are NBR rings suitable for outdoor use?
A: Standard Nitrile has limited resistance to ozone and UV light. If your application is exposed to direct sunlight or near ozone-producing electric motors, we recommend our specialized coatings or alternative materials like EPDM.
Q: Can you produce NBR rings for food-contact applications?
A: Yes! We manufacture Food Grade NBR rings that comply with FDA 21 CFR 177.2600 and NSF standards, specifically for the kitchen and bath industry.
Q: What is the largest size NBR ring you can manufacture?
A: We have the molding capability to produce rings up to 2000 mm in diameter, perfect for large-scale industrial machinery and hardware.
Get A Quote For Your Custom NBR Project
Looking for a reliable ODM partner who speaks the language of engineering? Whether you need a standard AS568 O-ring or a completely custom NBR ring design, our team is ready to assist.
Contact Us for a Free Technical Quote & Sample Ki
