O-Ring 140x3,55 mm 90 NBR

NBR 90 O-ring for demanding technical sealing

Increased hardness and oil resistance

Hydraulic, pneumatic and industrial applications

O-Ring 140x3.55 NBR 90 is a professional rubber sealing ring designed for advanced technical sealing in industrial applications where elevated pressure and intensive operating conditions are present. This product is intended for B2B customers who require reliable performance, dimensional stability and long service life.

The O-ring is manufactured from NBR rubber with a hardness of 90 ShA, providing high resistance to mineral oils, greases, fuels and other petroleum-based media. The increased hardness significantly reduces the risk of extrusion in sealing gaps, making this sealing ring suitable for high-pressure hydraulic and pneumatic systems.

With dimensions 140x3.55 mm, the O-ring is well suited for large sealing grooves in flanges, covers, housings, cylinders and industrial machinery components. It can be used for static and semi-dynamic sealing, ensuring effective leak prevention and stable system operation. The NBR 90 compound also offers good abrasion resistance and resistance to aging, supporting extended maintenance intervals.

The simple geometry allows easy installation and minimizes the risk of damage during assembly, which is critical in industrial maintenance and service operations. This O-ring is a proven solution for industrial applications where tightness, safety and predictable sealing performance are essential.

FAQ - frequently asked questions

Which material is the O-Ring 140x3.55 made of?
It is made of NBR rubber with a hardness of 90 ShA.

Where is this O-ring typically used?
In hydraulic, pneumatic and industrial sealing applications, especially under high pressure.

What is the advantage of NBR 90?
Higher hardness provides better resistance to extrusion and pressure.

Can this O-ring be used in semi-dynamic applications?
Yes, when properly installed and matched to operating conditions.

How do I select the correct NBR O-ring?
Consider dimensions, hardness, operating pressure, temperature and the sealing medium.