225-Pc Nitrile Rubber O-Ring Set – Hydraulic & Pneumatic Repair Kit

225-Piece Nitrile Rubber O-Ring Gasket Seal Repair Kit

Stop leaks in their tracks with this comprehensive 225-piece nitrile rubber O-ring set. Whether you're maintaining hydraulic systems, pneumatic equipment, plumbing fixtures, or household appliances, this all-in-one repair kit gives you the right seal for virtually any job — all in one convenient bag.

Made in Mainland China.

Why Choose This O-Ring Kit?

• Premium Nitrile Rubber Material: Crafted from high-quality NBR (nitrile butadiene rubber), these O-rings deliver excellent resistance to oils, fuels, hydraulic fluids, and general wear — ensuring long-lasting, leak-free performance.
• High-Pressure Rated: Engineered to withstand demanding high-pressure applications, making them ideal for hydraulic cylinders, pneumatic valves, pumps, and compressors.
• Versatile Multi-Size Set: With 225 pieces spanning a wide range of sizes, you'll always have the right O-ring on hand for both industrial and everyday household repairs.
• Elastic Band Design: The flexible, elastic construction allows for effortless installation and creates a tight, reliable seal every time.
• Easy Maintenance: This all-inclusive kit makes replacing worn or damaged seals quick and hassle-free — no more waiting for individual parts to ship.
• Universal Compatibility: Highly compatible with original equipment across automotive, plumbing, HVAC, industrial machinery, and DIY projects.

Product Specifications

Applications

• Hydraulic cylinders and pumps
• Pneumatic valves and fittings
• Automotive engines and fuel systems
• Plumbing faucets and pipe joints
• Air compressors and HVAC equipment
• Industrial machinery and equipment maintenance
• Household appliance repair

Note: Due to monitor settings and lighting conditions, the actual product color may vary slightly from images. Please allow for minor measurement deviations due to manual measurement.

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For more information on sealing standards and safety in industrial applications, visit the OSHA Hydraulic Safety Resources.

Learn more: O-ring

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), one of the most widely used sealing materials. NBR offers excellent resistance to petroleum-based oils, hydraulic fluids, fuels, and general abrasion — making it the go-to choice for hydraulic and pneumatic sealing applications where durability and oil resistance are critical.

Q: How many sizes are included in the 225-piece O-ring set?

A: The kit includes 225 O-rings across a wide variety of sizes, giving you comprehensive coverage for most common sealing applications in hydraulic systems, pneumatic equipment, plumbing, and automotive repairs. Having multiple sizes on hand means you can tackle most repair jobs without ordering individual parts.

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

A: Yes! These nitrile rubber O-rings are specifically designed to withstand high-pressure environments commonly found in hydraulic cylinders, pumps, and pneumatic valves. Their elastic band design ensures a tight, reliable seal even under demanding pressure conditions.

Q: Can I use these O-rings for plumbing and household repairs?

A: Absolutely. While these O-rings excel in industrial hydraulic and pneumatic applications, they are equally well-suited for everyday household repairs including faucets, showerheads, pipe joints, and home appliances. The wide size assortment makes this kit a versatile addition to any toolbox.