O-Ring 230x2.5 NBR 70Shore

Material properties and performance

The O-Ring 230x2.5 NBR 70Shore is a precision-engineered industrial sealing ring designed for reliable static sealing in a wide range of technical applications. Manufactured from NBR (nitrile butadiene rubber), this O-ring offers excellent resistance to mineral oil based oils, greases and standard hydraulic fluids, making it one of the most widely used rubber sealing solutions in industrial environments.

With an inner diameter of 230 mm and a 2.5 mm cross-section, this O-ring is suitable for large-diameter sealing grooves where dimensional accuracy and uniform compression are critical. The 70 Shore hardness ensures an optimal balance between elasticity and mechanical strength, allowing the seal to maintain tightness under pressure without excessive deformation.

Industrial applications

The 230x2.5 NBR O-Ring is commonly used in hydraulic and pneumatic applications, industrial machinery, pumps, valves, housings and mechanical assemblies. It performs reliably in contact with mineral oil based lubricants, aliphatic hydrocarbons and common industrial media, making it a dependable rubber gasket for general-purpose industrial sealing.

This O-ring is primarily intended for static sealing applications, such as covers, flanges and fixed joints, where consistent sealing pressure and long-term durability are required. Its material properties make it suitable for both new installations and maintenance or replacement tasks in industrial systems.

Advantages for B2B customers

For B2B buyers, the O-Ring 230x2.5 NBR 70Shore offers high durability, predictable performance and cost efficiency. NBR rubber provides proven resistance to oils and mechanical wear, reducing the risk of leakage and unplanned downtime. The standardized dimensions allow easy integration into existing sealing designs, supporting efficient procurement and inventory management for maintenance teams and OEM manufacturers.

Main product description

The O-Ring 230x2.5 NBR 70Shore is a professional industrial rubber seal developed for technical sealing components used in demanding operating conditions. As an industrial sealing ring, it delivers reliable sealing through controlled compression, stable material properties and resistance to common industrial fluids.

NBR is a copolymer of butadiene and acrylonitrile, optimized to provide good oil resistance while maintaining flexibility over a typical operating temperature range of -30°C to +100°C, with short-term exposure up to +120°C. The 70Shore hardness minimizes compression set and ensures consistent sealing force over extended service periods.

This O-ring is designed for static sealing in industrial equipment where reliability, chemical resistance and mechanical stability are essential. It is widely specified by engineers and procurement specialists as a standard rubber seal for hydraulic, pneumatic and general engineering applications.

FAQ - frequently asked questions

What material is the O-Ring 230x2.5 made of?
It is made of NBR (nitrile butadiene rubber) with 70 Shore hardness.

What type of sealing is this O-ring intended for?
It is primarily designed 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.