RS PRO Nitrile Rubber (NBR) O-Ring 0.625 in Inside Diameter, 0.8125 in Outside Diameter, Shore 70 Hardness 689-681

RS PRO 689-681 Nitrile Rubber (NBR) O-Ring features a 0.625 in inside diameter and 0.8125 in outside diameter, designed for high-performance sealing in mechanical, fluid power, and industrial applications.

The Nitrile Rubber material is well-known for its robust resistance to petroleum-based oils and greases, making this O-Ring ideal for use in automotive, aerospace, plumbing, and general engineering sectors. With a hardness of Shore 70, it ensures excellent durability and abrasion resistance.

This O-Ring operates effectively across a range of temperatures, with continuous use from -40°C up to 110°C and short-term tolerance up to 135°C. However, care should be taken since it is not suitable for contact with Esters, Ozone, Retones, Aldehydes, Chlorinated or Nitro Carbons.

Manufactured in Italy, this RS PRO O-Ring provides dependable sealing performance tailored for various gasket and sealing requirements. Its dimensions of 0.625 in ID, 0.8125 in OD, and 0.09375 in thickness provide precise fitting to protect joints and machinery components.

Made from Nitrile Rubber (NBR) offering excellent chemical and abrasion resistance. Shore 70 hardness for firm sealing and long service life. Temperature tolerance from -40°C continuous to 135°C short-term. Resistance to mineral hydraulic oils and greases ensures broad applicability.

Optimized dimensions for imperial measurement systems. Used extensively in automotive, aerospace, plumbing and engineering industries. Black coloration provides standard industrial appearance and UV protection. Not recommended for use with Esters, Ozone, Retones, Aldehydes, Chlorinated and Nitro Carbons.

This O-Ring is a key component in any seal and gasket inventory for maintenance or new installations in various industrial sectors. Browse the wide range of Industrial Tools & Equipment parts at EnvMart for more solutions matching your application needs.