CS2.5mm Black NBR Nitrile Rubber O-Rings Seals & Gaskets

CS2.5mm Black NBR Nitrile Rubber O-Rings — Reliable Seals for Every Application

Keep your plumbing, hydraulic, pneumatic, and mechanical systems leak-free with these heavy-duty CS2.5mm Black NBR Nitrile Rubber O-Rings. Engineered from premium Nitrile Butadiene Rubber (NBR), these standard-profile ring gaskets deliver outstanding temperature resistance, wear resistance, and long-lasting sealing performance across a wide range of industrial and DIY applications.

Key Features

• Material: High-grade NBR (Nitrile Butadiene Rubber) — oil-resistant, fuel-resistant, and wear-resistant
• Cross-Section (CS): 2.5mm for a snug, reliable seal
• Temperature Resistant: Maintains integrity across a broad temperature range, ideal for demanding environments
• Shape: Standard ring gasket profile — fits industry-standard grooves and housings
• Color: Classic black for easy identification and universal compatibility
• Wear-Resistant: Durable rubber compound resists abrasion and compression set over time
• Versatile Use: Suitable for water, oil, fuel, and gas sealing applications
• Standard Sizing: Available in multiple inner diameters — choose the exact size you need

Common Applications

• Plumbing fittings and pipe connectors
• Hydraulic and pneumatic systems
• Automotive engine and fuel components
• Industrial machinery and equipment maintenance
• Home appliance repair and DIY projects

Specifications

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Frequently Asked Questions

Q: What materials are these NBR nitrile rubber O-rings compatible with?

A: These CS2.5mm NBR nitrile rubber O-rings are compatible with oils, fuels, water, hydraulic fluids, and many solvents. NBR (Nitrile Butadiene Rubber) is specifically formulated to resist petroleum-based fluids, making these O-ring seals ideal for automotive, plumbing, and industrial applications.

Q: What temperature range can these O-ring gaskets handle?

A: NBR nitrile rubber O-rings typically withstand temperatures ranging from approximately -40°C to +120°C (-40°F to +248°F), making them suitable for both cold and high-heat environments in machinery, engines, and plumbing systems.

Q: How do I choose the right inner diameter for my application?

A: Measure the groove or housing where the O-ring will sit. The inner diameter (ID) should match the groove's inner edge closely. The CS2.5mm cross-section thickness is fixed; simply select the inner diameter size that corresponds to your fitting or component for a leak-free seal.

Q: Are these O-rings suitable for outdoor and UV-exposed environments?

A: NBR rubber offers good resistance to wear and temperature, but for prolonged outdoor UV or ozone exposure, an EPDM or silicone O-ring may be more appropriate. For enclosed mechanical, hydraulic, or plumbing uses, these black NBR O-ring washers perform excellently.

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.