NBR O-Ring Seal Kit 740–1200 Pcs | Plumbing & Auto Repair

NBR O-Ring Assortment Kit – 740 or 1200 Pieces for Every Seal Job

Stop leaks fast with this comprehensive NBR (Nitrile) O-Ring Seal Assortment Kit. Whether you're repairing a dripping faucet, fixing a hydraulic line, maintaining pneumatic equipment, or servicing your vehicle, this kit gives you the right seal in the right size — every time. With up to 1,200 pieces spanning multiple diameters and thicknesses, it's the only seal kit you'll ever need to keep on the workbench.

Made in Mainland China.

Kit Specifications

• Pieces: 740-piece or 1,200-piece set
• Material: Nitrile Rubber (NBR) — oil, fuel & chemical resistant
• Thicknesses: 1.5 mm, 2.4 mm, 3.1 mm
• Outer Diameter Range: 6 mm to 28 mm
• Color: Black
• Shape: Standard flat gasket / O-ring profile
• Certification: CE certified
• Storage: Neatly organized in a durable plastic case

Why Nitrile (NBR) Rubber?

Nitrile rubber is the industry-preferred material for sealing applications because of its outstanding resistance to petroleum-based oils, fuels, hydraulic fluids, and a wide range of chemicals. NBR O-rings maintain their flexibility and sealing integrity across a broad temperature range, making them ideal for both indoor plumbing and automotive use. Learn more about sealing material standards at NCBI / NLM engineering resources.

Where Can You Use This Kit?

• 🔧 Plumbing & Faucets – Stop drips at taps, valves, and pipe joints
• 🚗 Automotive – Seal fuel systems, oil lines, and engine components
• ⚙️ Pneumatic & Hydraulic Systems – Maintain air compressors, cylinders, and fittings
• 🏠 Home Appliances – Washing machines, dishwashers, and water heaters
• 🌿 Garden & Irrigation – Hose connectors, spray nozzles, and drip fittings — pairs perfectly with our Drip Irrigation Kit

Organized & Ready to Use

Every piece is sorted by size and stored in a clear-lidded plastic case with labeled compartments. No more digging through bags of loose rings — grab the size you need and get back to work in seconds. The compact case fits in a toolbox drawer or on a shelf for easy access.

Great Companion Tools

Pair this kit with our Stainless Steel Pressure Washer Drain Hose Nozzle Quick Plug for a complete sealing and fitting solution for water systems and pressure washers.

Package Contents

• 1 × O-Ring Assortment Kit (740 pcs or 1,200 pcs — choose your set)
• 1 × Organized plastic storage case

Frequently Asked Questions

Q: What is the difference between the 740-piece and 1,200-piece NBR O-ring kits?

A: Both kits include the same range of sizes (OD 6 mm–28 mm) and thicknesses (1.5 mm, 2.4 mm, 3.1 mm). The 1,200-piece kit simply includes more pieces per size, so you'll have extra stock for high-use dimensions — ideal for professionals or workshops that perform frequent seal replacements.

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

A: Yes. Nitrile rubber (NBR) is specifically engineered for resistance to petroleum-based oils, fuels, greases, and hydraulic fluids. These O-rings are widely used in automotive fuel lines, engine components, and hydraulic cylinders.

Q: What size O-rings are included in this kit?

A: The kit covers outer diameters from 6 mm to 28 mm, with three cross-section (thickness) options: 1.5 mm, 2.4 mm, and 3.1 mm — giving you dozens of size combinations to match nearly any standard fitting or valve.

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

A: Absolutely. These standard NBR rubber O-rings are perfect for sealing faucet cartridges, shutoff valves, pipe couplings, and other common household plumbing fixtures. They are a cost-effective alternative to buying individual replacement seals.

Q: How should I store the O-ring kit when not in use?

A: Store the kit in a cool, dry place away from direct sunlight and ozone sources (such as electric motors), which can degrade rubber over time. The included plastic case keeps the rings organized and protected from environmental exposure.