O-Ring 88x2.5 NBR - Sealing Ring

Application - Technical Sealing for Industrial Systems

The O-Ring 88x2.5 NBR 70 Shore is a precision sealing ring designed for static and light dynamic sealing applications in hydraulic and pneumatic systems. With an inner diameter of 88 mm and a cross-section of 2.5 mm, it is commonly used in valve housings, cylinders, pumps, distributors, and various industrial machine assemblies.

As a standard rubber gasket type O-ring, it provides reliable sealing performance in industrial applications where tightness against fluids or gases is required. It functions as a technical seal in flange connections, cylindrical housings, and machine components exposed to mineral oils and lubricants.

This size is frequently searched and selected for maintenance, repair, and OEM production where dimensional accuracy and consistent material quality are essential.

Material NBR 70 Shore - High Resistance and Versatility

Manufactured from NBR with a hardness of 70 Shore A, this O-ring offers an optimal balance between elasticity and mechanical strength. NBR is widely used in hydraulic and automotive seals due to its high resistance to oils and grease, fuels, and standard industrial media.

The 70 Shore hardness ensures dimensional stability while maintaining sufficient flexibility to compensate for minor surface irregularities. This makes the O-Ring 88x2.5 suitable for technical sealing in both hydraulic and pneumatic systems operating under moderate pressure conditions.

Precise cross-section geometry reduces the risk of twisting during installation and ensures uniform compression within the sealing groove.

Technical Data

• Product type: O-ring

• Dimension: 88x2.5 mm

• Material: NBR

• Hardness: 70 Shore A

• Color: Black

• Application: Technical sealing, hydraulic and pneumatic systems

• Resistance: Oils, grease, fuels, standard industrial fluids

FAQ - Frequently Asked Questions

What temperature range is suitable for NBR O-rings?
Typical operating range is approximately -30 to +100 degrees C, depending on application conditions.

Is this O-ring suitable for hydraulic systems?
Yes, NBR 70 Shore is commonly used in hydraulic and pneumatic sealing applications.

What does 70 Shore hardness mean?
It indicates the material hardness, providing a balance between flexibility and durability for most industrial uses.

How do I select the correct O-ring size?
Match the inner diameter (88 mm) to the shaft or housing dimension and the cross-section (2.5 mm) to the groove depth.