Nitrile Rubber O-Ring Gasket Set – 0.3–0.8mm, OD 1.3–81mm

Nitrile Rubber O-Ring Sealing Gasket Set

Keep your plumbing, hydraulic, pneumatic, and mechanical systems sealed and leak-free with these precision-grade nitrile rubber O-rings. Available in a wide range of cross-section thicknesses (0.3 / 0.4 / 0.5 / 0.6 / 0.7 / 0.8 mm) and outer diameters from 1.3 mm to 81 mm, this versatile set is a must-have for DIYers, engineers, and maintenance professionals alike.

Why Choose These O-Rings?

• Premium Nitrile (NBR) Rubber Material: Excellent resistance to oils, fuels, hydraulic fluids, and solvents — ideal for demanding applications.
• Wide Size Range: Cross-section thicknesses from 0.3 mm to 0.8 mm and outer diameters from 1.3 mm to 81 mm cover a vast array of standard sealing needs.
• Reliable Sealing Performance: Precise dimensions ensure a consistent, tight seal that minimises leaks and extends the life of your equipment.
• Temperature Tolerant: Designed to perform reliably across a broad temperature range, making them suitable for both indoor and outdoor applications.
• Versatile Use: Perfect for faucets, valves, pumps, compressors, automotive components, garden equipment, and general mechanical assemblies.
• Cost-Effective Solution: A single purchase covers multiple sizes, reducing downtime when you need a quick seal replacement.

Product Specifications

Common Applications

• Plumbing taps, faucets & valves
• Hydraulic & pneumatic systems
• Automotive engines & fuel systems
• Garden hose fittings & irrigation equipment
• Air compressors & pumps
• General mechanical & industrial assemblies

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Frequently Asked Questions

Q: What material are these O-rings made from, and what fluids are they compatible with?

A: These O-rings are made from Nitrile Rubber (NBR), which offers excellent resistance to oils, fuels, hydraulic fluids, water, and many common solvents. They are well-suited for plumbing, automotive, and hydraulic applications but are not recommended for use with strong acids, ketones, or brake fluids.

Q: How do I choose the correct O-ring size for my application?

A: You need to match both the cross-section (wire) thickness and the outer diameter to your groove or fitting. Measure the groove width to determine the correct cross-section thickness (0.3–0.8 mm available) and measure the outer diameter of the fitting or groove to select the right outer diameter (1.3–81 mm range). When in doubt, refer to your equipment's service manual for the specified O-ring dimensions.

Q: Are these O-rings suitable for high-temperature environments?

A: Nitrile rubber O-rings perform reliably in a broad temperature range, generally from approximately -40°C to +120°C (-40°F to +248°F), making them suitable for most household, automotive, and light industrial uses. For extreme high-temperature applications above this range, a silicone or Viton O-ring may be more appropriate.

Q: Can these O-rings be used for outdoor garden or irrigation systems?

A: Yes! Nitrile rubber O-rings are an excellent choice for garden hose fittings, irrigation valves, and outdoor water connections. Their water and weather resistance ensures a dependable seal even with regular outdoor use.

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.