75.57mm i/d O-Ring x 5.33mm | BS337N70

Comprehensive range of cost effective Round O Rings, Circular O Ring Seals and Gaskets, typically used in pumps, cylinders, connectors and valves but with a wide variety of general uses.  Alternative compounds are also available to order with polymers including silicone, EPDM, Kalrez®, FFKM, HNBR, PTFE, XNBR, PU, CR and more. In addition, we can supply 0-rings to order in unique colours, materials or specifications to meet certification standards.

Nitrile is the most cost effective and commonly available O'ring material. Ideal for use as seals for pumps, drive belts, and other general engineering applications in the hydraulic and pneumatic industry. NBR is good for applications where the O ring is exposed to fats, greases and animal or vegetable oils. For applications requiring contact with diesel or temperatures higher than 120°C you may wish to consider a FKM (Viton®) O'ring.

Key Information (dimensions can vary, they are 'typical' only)

• Colour: Black
• Material: Nitrile (NBR)
• Cross Section Type: Circular
• O-Ring Type: British Standard
• Hardness (Shore A): 70
• Maximum Temperature (°C): 90.00
• Minimum Temperature (°C): -30.00
• Recommended Temperature Range (°C): -20 to +90

Chemical Resistance

• Many hydrocarbons
• Fats
• Oils and Greases
• Petroleum based hydraulic fluid (HFD-R)

Not compatible with:

• Ozone
• Esters
• Retones
• Aldehydes
• Chlorinated
• Nitro Hydrocarbons

For more information, please click the Technical Data tab

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• Material Data Sheet