NBR Nitrile O-Ring Seals CS 1.5–4.6mm OD 4–160mm Gasket

NBR Nitrile Rubber O-Ring Seals – Reliable Waterproof Gasket Rings

Keep your plumbing, machinery, and HVAC systems leak-free with these premium NBR (Nitrile Butadiene Rubber) O-Ring Seals. Available in cross-section thicknesses of 1.5mm, 2.4mm, and 4.6mm and outside diameters ranging from 4mm to 160mm, these rings cover a wide variety of sealing needs — from household repairs to industrial factory applications.

Made in Mainland China.

Why Choose These NBR O-Ring Gaskets?

• Oil Resistant: Nitrile rubber is specially formulated to withstand petroleum-based oils and fuels, making these seals ideal for hydraulic and automotive applications.
• Waterproof Sealing: Creates a tight, reliable barrier against water and moisture intrusion in pipes, fittings, and valves.
• Wear Resistant: Durable NBR compound holds up against friction and repeated compression cycles without losing its sealing integrity.
• Temperature Resistant: Performs consistently across a broad temperature range, suitable for both hot and cold environments including air conditioning systems.
• Wide Size Range: Outside diameter from 4mm to 160mm covers standard and custom fitting configurations for factories and home use.
• Standard Shape: Classic ring gasket profile fits standard grooves and counterbores without modification.
• Black Color: Universal black finish compatible with most mechanical assemblies and plumbing setups.
• Safe Packaging: Each order is securely packaged to prevent deformation or damage during transit.

Product Specifications

Common Applications

• Hydraulic and pneumatic systems
• Air conditioning and HVAC fittings
• Plumbing pipe joints and valves
• Automotive fuel and oil systems
• Industrial machinery and equipment
• General home maintenance and DIY repairs

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Frequently Asked Questions

Q: What sizes are available for these NBR O-Ring seals?

A: These NBR nitrile rubber O-rings are available in cross-section (CS) thicknesses of 1.5mm, 2.4mm, and 4.6mm, with outside diameters (OD) ranging from 4mm to 160mm, covering a broad range of standard sealing applications for both home and industrial use.

Q: Are these O-rings suitable for oil and fuel systems?

A: Yes. NBR (Nitrile Butadiene Rubber) is specifically engineered for excellent oil resistance, making these O-ring gaskets well-suited for hydraulic, fuel, and lubrication systems in automotive and industrial environments.

Q: Can I use these rubber seals in air conditioning units?

A: Absolutely. These O-ring seals are designed for air conditioning and HVAC applications, providing a secure, waterproof seal at pipe joints, valves, and fittings across a wide temperature range.

Q: What is NBR rubber and why is it a good sealing material?

A: NBR stands for Nitrile Butadiene Rubber, a synthetic rubber compound prized for its outstanding resistance to oils, fuels, water, and wear. It maintains its shape and sealing performance under mechanical compression, making it one of the most widely used materials for O-ring gaskets in industrial and plumbing applications.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.