O-Ring 165x2 NBR 70ShA

Material properties and performance

The O-Ring 165x2 NBR 70ShA is a precision-manufactured industrial sealing ring designed for reliable static sealing in demanding technical environments. Produced from NBR (nitrile butadiene rubber), this O-Ring offers an excellent balance of mechanical strength, elasticity and resistance to mineral oil based media. With an inner diameter of 165 mm and a cross-section of 2 mm, it is suitable for large sealing grooves where dimensional accuracy and consistent compression are essential.

The 70 Shore A hardness provides optimal sealing pressure without excessive deformation, ensuring stable performance under continuous load. NBR rubber is widely used in industrial sealing due to its low gas permeability, good abrasion resistance and proven durability in long-term operation.

Industrial applications

The 165x2 NBR O-Ring is commonly used in hydraulic and pneumatic applications, industrial machinery, automation systems, pumps, valves and housings. It performs effectively in contact with mineral oil based oils and greases, aliphatic hydrocarbons and standard hydraulic fluids. This makes it a dependable rubber gasket for general industrial sealing where cost efficiency and reliability are required.

Designed primarily as a static seal, this O-Ring ensures consistent sealing performance in fixed joints, flanges and covers. Its material properties make it suitable for a wide range of industrial environments where standard rubber sealing components are specified.

Advantages for B2B customers

For B2B users, the O-Ring 165x2 NBR 70ShA offers high durability, predictable performance and easy integration into existing sealing systems. The use of NBR material ensures long service life and resistance to common industrial media, reducing maintenance frequency and operational downtime. It is a practical solution for maintenance teams, OEM manufacturers and procurement departments seeking reliable technical sealing components with stable quality.

Main product description

The O-Ring 165x2 NBR 70ShA is a professional industrial rubber seal developed for technical sealing applications requiring resistance to oils, greases and mechanical wear. As an industrial sealing ring, it provides effective sealing performance through uniform compression and dimensional stability within the groove.

NBR is a copolymer of butadiene and acrylonitrile, optimized to deliver good oil resistance while maintaining flexibility across a standard operating temperature range of -30°C to +100°C, with short-term exposure up to +120°C. The 70ShA hardness ensures a reliable sealing interface without excessive compression set, supporting long-term use in industrial systems.

This O-Ring is engineered for static sealing in machinery and equipment where consistent performance, chemical resistance and mechanical reliability are essential. It is suitable for new installations as well as maintenance and replacement tasks across a wide range of industrial sectors.

FAQ - frequently asked questions

What material is the O-Ring 165x2 made of?
It is made of NBR (nitrile butadiene rubber) with 70 Shore A hardness.

What type of sealing is this O-Ring designed for?
It is primarily intended for static sealing applications.

Is this O-Ring suitable for hydraulic systems?
Yes, it is commonly used in hydraulic and pneumatic applications.

What is the operating temperature range?
Standard operating range is from -30°C to +100°C, with short-term exposure up to +120°C.

Is the O-Ring resistant to oils and greases?
Yes, NBR provides excellent resistance to mineral oil based oils and greases.