O-Ring 145x2,5 NBR

O-Ring 145x2,5 NBR 70 ShA for Industrial Applications

The O-Ring 145x2,5 NBR 70 ShA is a precision-engineered rubber sealing ring designed for demanding industrial environments. Manufactured from high-quality Nitrile Butadiene Rubber (NBR) with a hardness of 70 ShA, it provides reliable technical sealing in systems operating with oils, greases, fuels and other industrial fluids. The dimension 145x2,5 mm refers to a 145 mm inner diameter and a 2,5 mm cross section, ensuring compatibility with standard groove designs used in industrial assemblies.

This O-Ring functions effectively as a static seal and can also be applied in low dynamic applications where moderate movement occurs. Thanks to the chemical stability of NBR, it offers high resistance to oils and grease, making it a preferred choice for hydraulic and pneumatic systems as well as mechanical equipment requiring durable sealing performance.

Technical Properties and Material Performance

NBR 70 ShA is one of the most commonly specified elastomers for industrial sealing. It combines flexibility with mechanical strength, allowing the O-Ring to maintain proper compression and sealing integrity under pressure. Key characteristics include:

• High resistance to mineral oils and fuels

• Good abrasion resistance and mechanical durability

• Stable sealing performance in industrial applications

• Reliable static sealing in housings, covers and flange connections

The 70 ShA hardness ensures balanced elasticity and structural stability, reducing the risk of deformation, leakage or premature wear.

Applications in Hydraulic and Industrial Systems

The O-Ring 145x2,5 NBR is widely used in hydraulic cylinders, pumps, valves, gear housings and industrial machinery. It serves as an essential technical seal in maintenance operations, production lines and OEM assemblies. Its versatility makes it suitable for various industrial applications where dependable sealing and operational continuity are required.

FAQ - Frequently Asked Questions

1. What is the O-Ring 145x2,5 NBR 70 ShA used for?
It is used for static and light dynamic sealing in hydraulic systems, pneumatic equipment and industrial machinery.

2. Is NBR resistant to oils and fuels?
Yes, NBR provides high resistance to mineral oils, greases and many petroleum-based fluids.

3. What is the typical temperature range?
Standard NBR 70 ShA O-Rings typically operate between approximately -30 C and +120 C, depending on working conditions.

4. Can this O-Ring be used in hydraulic applications?
Yes, it is commonly applied in hydraulic and pneumatic sealing systems.

5. How do I select the correct O-Ring size?
Verify the inner diameter, cross section and operating conditions such as pressure, temperature and media compatibility.