NBR O-Ring Seals CS2.5–3mm OD6–190mm Nitrile Rubber Gaskets
NBR O-Ring Seals CS2.5–3mm OD6–190mm Nitrile Rubber Gaskets
Details
Ouling NBR O-Ring Rubber Seals — Reliable Sealing for Home & Industrial Use
Keep leaks at bay with these high-quality Nitrile Butadiene Rubber (NBR) O-Rings from Ouling. Available in cross-section sizes of CS2.5, CS2.8, and CS3mm with outside diameters ranging from OD6mm to OD190mm, these versatile sealing rings are engineered to deliver dependable performance across a wide range of applications — from home plumbing and air conditioning systems to factory machinery and hydraulic equipment.
Made in Mainland China.
Why Choose These NBR O-Rings?
- Oil Resistant: NBR rubber composition offers excellent resistance to petroleum-based oils, fuels, and lubricants — ideal for hydraulic and pneumatic systems.
- Waterproof Sealing: Creates a firm, watertight barrier to prevent fluid leakage in pipes, valves, and fittings.
- Temperature Resistant: Maintains sealing integrity across a broad temperature range, suitable for both hot and cold environments including air conditioning units.
- Wear Resistant: Durable nitrile rubber construction withstands repeated compression and mechanical stress without deforming.
- Wide Size Range: OD6mm to OD190mm outside diameters give you the flexibility to find the perfect fit for your specific application.
- Standard Shape: Classic ring gasket form factor fits standard grooves and channels — easy drop-in replacement.
- Dual-Use Versatility: Suitable for both home DIY projects and professional factory/industrial environments.
Product Specifications
| Material | Nitrile Butadiene Rubber (NBR) |
| Color | Black |
| Cross-Section (CS) | 2.5mm / 2.8mm / 3mm |
| Outside Diameter (OD) | 6mm – 190mm |
| Shape | Ring Gasket |
| Standard | Standard |
| Applications | Oil resistance, Wear resistance, Waterproof, Temperature resistance |
| Suitable For | Factories and homes |
| Packaging | Safe Package |
| Brand | Ouling |
| Origin | Made in Mainland China |
Common Applications
- Hydraulic and pneumatic systems
- Air conditioning and refrigeration units
- Plumbing valves and pipe fittings
- Automotive fuel and oil systems
- Industrial machinery and equipment maintenance
- General-purpose waterproof sealing in DIY home projects
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Frequently Asked Questions
Q: What sizes are available for these NBR O-Ring seals?
A: These NBR O-Rings come in cross-section sizes of CS2.5mm, CS2.8mm, and CS3mm, with outside diameters (OD) ranging from 6mm up to 190mm. This wide range makes it easy to find the exact size needed for your plumbing, HVAC, hydraulic, or general-purpose sealing application.
Q: Are these O-rings suitable for use with oil and fuel systems?
A: Yes. These O-rings are made from Nitrile Butadiene Rubber (NBR), which is specifically engineered for excellent resistance to petroleum-based oils, fuels, and lubricants. They are widely used in automotive, hydraulic, and industrial oil systems.
Q: Can I use these O-rings in air conditioning or refrigeration applications?
A: Absolutely. The NBR material offers solid temperature resistance and has been noted as suitable for air conditioning rubber washer applications, making these rings a dependable choice for HVAC and refrigeration system seals.
Q: How durable are these rubber sealing rings under repeated use?
A: These O-rings are formulated for wear resistance and can withstand repeated compression cycles without cracking or losing their shape, ensuring a long-lasting, leak-free seal in both home and industrial settings.
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.
Materials + Care
We prioritize quality in selecting the materials for our items, choosing premium fabrics and finishings that ensure durability, comfort, and timeless appeal.
Shipping + Returns
We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.