10pcs NBR Nitrile O-Ring Gaskets CS 1–3mm OD 3–80mm Black

10-Pack NBR Nitrile Rubber O-Ring Sealing Gaskets — Multi-Size Set

Keep leaks at bay with this versatile 10-piece set of NBR (Nitrile Butadiene Rubber) O-ring gaskets. Available in a range of cross-section (CS) diameters — 1 mm, 1.5 mm, 2 mm, and 3 mm — and outer diameters (OD) from 3 mm to 80 mm, these standard-spec sealing washers are an essential addition to any toolbox, workshop, or vehicle maintenance kit. Made in Mainland China.

Key Features

• Material: High-grade NBR (Nitrile Butadiene Rubber) — hardness approx. 70 Shore A
• Fuel & Oil Resistant: Excellent resistance to petroleum-based fluids, hydraulic oils, and fuels
• Corrosion Resistant: Withstands exposure to a wide range of chemicals and solvents
• Anti-Aging & Anti-Ozone: Maintains elasticity and integrity over extended use
• Non-Toxic & Eco-Friendly: No pollution, no radiation, no abnormal odor
• Wear-Resistant: Durable construction for long-lasting sealing performance
• Standard Shape: Classic round ring gasket profile for universal compatibility

Specifications

📐 How to Measure

Our sizing uses Outer Diameter (OD) × Wire Diameter (CS). To find the Inner Diameter (ID), use this formula:

ID = OD − (2 × CS)

Example: OD 32 mm × CS 2 mm → ID = 32 − (2 × 2) = 28 mm

Wide Range of Applications

These O-rings are suitable for use across a broad range of industries and everyday applications, including:

• Automobiles & motorcycles (fuel systems, engines, pumps)
• Doors & windows (air-tight and water-tight sealing)
• Electric appliances & HVAC systems
• Bearings, pumps, and carrier rollers
• Plumbing, hydraulics, and pneumatic systems

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Learn more: FuelEconomy.gov on vehicle maintenance

Frequently Asked Questions

Q: What sizes are included in the NBR O-ring gasket set?

A: Each pack contains 10 pieces of NBR nitrile rubber O-ring gaskets. You can select from cross-section (CS) diameters of 1 mm, 1.5 mm, 2 mm, or 3 mm, and outer diameters (OD) ranging from 3 mm to 80 mm. Please check the size selector to choose your exact required dimensions.

Q: Are these O-rings suitable for fuel and oil applications in automobiles?

A: Yes. NBR (Nitrile Butadiene Rubber) is specifically known for its outstanding resistance to petroleum-based fluids, engine oils, hydraulic fluids, and fuels, making these O-rings an excellent choice for automotive fuel systems, pumps, and other oil-contact applications.

Q: How do I calculate the inner diameter of the O-ring I need?

A: Use the simple formula: Inner Diameter (ID) = Outer Diameter (OD) − (2 × Cross-Section/Wire Diameter). For example, an O-ring listed as OD 32 mm × CS 2 mm has an inner diameter of 32 − (2 × 2) = 28 mm. Always verify both OD and CS before ordering to ensure a proper seal.

Q: Are these O-ring gaskets environmentally safe?

A: Yes. These NBR rubber O-rings are non-toxic, produce no pollution or radiation, and have no abnormal odor, making them a safe and environmentally friendly sealing solution for household and industrial use alike.

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.