NBR Nitrile O-Ring Set 740/1200pcs – Oil & Waterproof Seals

NBR Nitrile Rubber O-Ring Set – 740 & 1200-Piece Assortment

Keep leaks, drips, and wear at bay with this comprehensive NBR (Nitrile Butadiene Rubber) O-Ring Assortment Kit. Whether you're a DIY enthusiast, plumber, mechanic, or engineer, this multi-size set gives you the right seal for virtually any job — from hydraulic fittings and plumbing repairs to automotive maintenance and industrial machinery.

Why Choose Nitrile (NBR) O-Rings?

NBR rubber is the gold standard for sealing applications that involve oils, fuels, water, and hydraulic fluids. These black O-rings are engineered for:

• Oil & Fuel Resistance – Maintains integrity when exposed to petroleum-based oils, diesel, and gasoline.
• Waterproof Sealing – Creates a reliable watertight barrier in plumbing and hydraulic systems.
• Wear Resistance – Durable rubber compound resists abrasion and compression set over time.
• Wide Temperature Range – Performs reliably across a broad range of operating temperatures.
• CE Certified – Meets European safety and quality standards for rubber sealing components.

Kit Highlights

• ✅ Two Kit Sizes Available: Choose the 740-piece or the 1200-piece assortment to match your needs.
• ✅ Multiple Sizes Included: A wide range of inner and outer diameters means you'll always have the right fit on hand.
• ✅ Standard Flat Gasket Shape: Compatible with a wide variety of standard fittings and connectors.
• ✅ Premium Rubber Material: 100% brand-new, carefully inspected nitrile rubber — no recycled or substandard materials.
• ✅ Organized Assortment: Sizes sorted for easy identification and quick selection during repairs.

Ideal Applications

• Automotive engine, transmission & hydraulic repairs
• Plumbing pipe joints, faucets & water fittings
• Air compressors & pneumatic tools
• Industrial pumps & hydraulic cylinders
• Home appliances & garden equipment maintenance

Product Specifications

Note: A slight rubber odor when first opening the package is completely normal due to the sealed packaging during storage and transit. Simply clean the O-rings and allow them to air dry naturally — the scent will dissipate quickly.

Related Products You May Like

• 100-Pack Disposable Nitrile Gloves – Latex-Free, White, Oil-Proof – Perfect companion for hands-on repair work.
• 120ml Heavy-Duty Metal Rust Remover & Anti-Rust Spray – Protect your fittings and metal components from corrosion.
• 10-Pack 22AWG Glass Tube Fuse Holder 5x20mm & 6x30mm Screw – Keep your electrical repairs complete with essential hardware.

For guidance on safe handling of rubber and chemical-resistant materials in industrial settings, refer to the OSHA Chemical Hazards Resource.

Frequently Asked Questions

Q: What types of fluids are NBR nitrile rubber O-rings resistant to?

A: NBR (Nitrile Butadiene Rubber) O-rings are highly resistant to petroleum-based oils, hydraulic fluids, diesel, gasoline, water, and many common industrial fluids. They are not recommended for use with ketones, strong acids, or halogenated hydrocarbons.

Q: What is the difference between the 740-piece and 1200-piece O-ring kits?

A: The 1200-piece kit includes a larger variety and higher quantity of O-ring sizes, making it ideal for professional mechanics, workshops, or anyone who handles frequent repairs across multiple systems. The 740-piece kit is a great all-in-one solution for home DIY use, plumbing, and general maintenance tasks.

Q: Are these O-rings suitable for high-pressure hydraulic systems?

A: These standard NBR O-rings are designed for general-purpose sealing applications. While NBR material does perform well in many hydraulic environments, always verify the specific pressure rating and size requirements of your system before installation, and replace O-rings at recommended service intervals.

Q: How do I store unused O-rings to maximize their lifespan?

A: Store NBR O-rings away from direct sunlight, heat sources, and ozone-generating equipment (such as electric motors). Keep them in a cool, dry environment in their original packaging or a sealed container. Proper storage can significantly extend their service life.