Nitrile Rubber O-Ring Assortment Kit – 595 / 1020 Pieces

Keep every seal tight and every connection leak-free with this comprehensive NBR nitrile rubber o-ring assortment. Whether you're working on automotive air conditioning, plumbing fixtures, hydraulic systems, or home appliances, this multi-size kit gives you exactly the right ring for the job — right when you need it.

Made in Mainland China.

Premium NBR 70 Duro Material

Each o-ring is crafted from high-quality commercial-grade Nitrile Rubber (NBR) 70 Duro — a flexible, durable compound known for outstanding resistance to oils, fuels, heat, and ozone. The wide operating temperature range of -40°C / -40°F to 120°C / 248°F ensures reliable performance in both extreme cold and high-heat environments, maintaining excellent elasticity throughout.

Wide Range of Applications

Car & automotive air conditioning (A/C systems)
Plumbing faucets, valves, and water fixtures
Pressure washers and compressors
Hydraulic and pneumatic connections
Oil, gas, and fuel seals
Motorcycle and auto engine components
Filters, cylinders, pumps, and machinery bearings
Home appliances and general repair work

Organized & Ready to Use

All o-rings are neatly arranged in a sturdy plastic storage box, sorted from smallest to largest with individual labeled compartments for each size. No more digging through loose hardware — find the size you need in seconds and get back to the job.

Kit Specifications

Material: Nitrile Rubber (NBR) 70 Duro
Hardness: 70 Shore A
Temperature Range: -40°C / -40°F to 120°C / 248°F
Pack Size: 595 pcs or 1020 pcs (assorted sizes)
Color: Green / Black (may vary slightly by size)
Storage: Multi-compartment labeled plastic box

Related Products You May Need

For guidance on proper sealing materials and standards for fluid systems, visit the National Institute of Standards and Technology (NIST) for engineering and measurement references.

Note: Actual color may vary slightly from images due to monitor brightness and lighting conditions. Please allow minor measurement tolerances of ±0.1 mm.

Frequently Asked Questions

Q: What material are these o-rings made from, and why does it matter?

A: These o-rings are made from Nitrile Rubber (NBR) 70 Duro — one of the most widely used sealing materials for oil, fuel, and water applications. NBR 70 Duro offers excellent flexibility, good compression set resistance, and strong compatibility with petroleum-based fluids, making it ideal for automotive, plumbing, and hydraulic uses.

Q: What temperature range can these nitrile o-rings handle?

A: The NBR o-rings in this kit are rated for a working temperature range of -40°C / -40°F to 120°C / 248°F, making them suitable for both cold-weather plumbing work and high-temperature automotive or compressor applications.

Q: How are the o-rings organized inside the storage box?

A: The o-rings are stored in a multi-compartment plastic box, with each size in its own labeled compartment, arranged in order from smallest to largest. This makes it easy to identify and retrieve the exact size you need without sorting through a loose assortment.

Q: Are these o-rings suitable for automotive air conditioning systems?

A: Yes. These nitrile rubber o-rings are commonly used in automotive A/C systems, compressors, and refrigerant fittings. However, always verify the o-ring size and material compatibility with your specific vehicle's A/C system specifications before installation.

Q: What is the difference between the 595-piece and 1020-piece kit?

A: Both kits contain assorted NBR o-ring sizes stored in a labeled compartment box. The 1020-piece kit includes more pieces per size and/or additional size options, making it the better choice for workshops or professionals who need a broader selection on hand at all times.