NBR O-Ring Set 740/1200pcs – Nitrile Rubber Oil-Resistant Seals

NBR Nitrile Rubber O-Ring Set – 740 or 1200 Pieces

Keep leaks at bay with this comprehensive NBR (Nitrile Butadiene Rubber) O-Ring Assortment Kit. Whether you're a professional mechanic, plumber, DIY enthusiast, or industrial technician, this multi-size sealing set gives you the right ring for virtually any job. Each o-ring is made from CE-certified nitrile rubber — engineered for superior resistance to oils, fuels, water, and wear.

Made in Mainland China.

Why Choose This O-Ring Set?

• Oil-Resistant: NBR compound withstands petroleum-based oils, hydraulic fluids, and fuels without swelling or degrading.
• Waterproof Seal: Provides reliable watertight sealing for plumbing, automotive, and hydraulic applications.
• Wear-Resistant: High-density nitrile rubber resists abrasion and compression set, extending service life.
• Multi-Size Variety: 740 or 1200 pieces in a wide range of standard metric sizes — one kit covers dozens of applications.
• CE Certified: Meets quality and safety standards (Model No. XJ38).
• 100% Brand New: Every ring is inspected before packaging for consistent quality.

Key Specifications

• Material: NBR (Nitrile Butadiene Rubber)
• Color: Black
• Shape: Flat Gasket / O-Ring
• Standard: Standard metric sizes
• Certification: CE
• Model Number: XJ38
• Quantity: 740 pcs or 1200 pcs (choose your preferred set)

Common Applications

• Automotive engines, transmissions & fuel systems
• Hydraulic and pneumatic equipment
• Plumbing fixtures, faucets & pipe fittings
• Industrial machinery and compressors
• Garden irrigation systems and hose connectors
• Air conditioning and refrigeration units

Note on Odor: A slight rubber odor upon first opening is completely normal, as the rings are sealed in airtight packaging. Simply rinse and air-dry — the smell dissipates quickly.

Related Products You May Need

• 1/2" ABS Quick Connector Double Male Hose Coupling Adapter Set
• 1/4" Stainless Steel Pressure Washer Drain Hose Nozzle Quick Plug

For more information on rubber sealing standards and industrial gasket materials, visit the NIH reference on elastomers and rubber compounds.

Frequently Asked Questions

Q: What is NBR (Nitrile Butadiene Rubber) and why is it used for o-rings?

A: NBR is a synthetic rubber compound known for its outstanding resistance to petroleum-based oils, fuels, and water. This makes NBR o-rings ideal for automotive, hydraulic, and plumbing sealing applications where standard rubber would quickly degrade.

Q: What sizes are included in the NBR o-ring set?

A: The kit includes a wide assortment of standard metric o-ring sizes. With 740 or 1200 pieces across multiple diameters and cross-sections, you'll have the right size on hand for most common sealing jobs without needing to order individual sizes.

Q: Are these o-rings safe for use with fuel systems?

A: Yes. NBR nitrile rubber is specifically formulated to resist petroleum-based fuels and oils, making it a widely accepted material for fuel system sealing applications in automotive and industrial settings.

Q: Why do the o-rings have a slight odor when I first open the package?

A: A mild rubber smell upon opening is completely normal. The rings are sealed in airtight packaging for extended periods during shipping and storage. Simply rinse them with water and allow them to air-dry naturally — the odor will disappear quickly.

Q: Can these NBR o-rings be used for plumbing and garden irrigation applications?

A: Absolutely. These waterproof, wear-resistant nitrile rubber o-rings are well-suited for plumbing fixtures, faucet connections, garden hose fittings, and drip irrigation systems.