O-ring 100X4 NBR

Main Description

The O-Ring 100x4 NBR is a precision industrial sealing ring designed for reliable use in a wide range of hydraulic and pneumatic applications. With an inner diameter of 100 mm and a 4 mm cross-section, this O-Ring provides effective sealing in both static and dynamic conditions, ensuring tight joints and long-term operational stability in industrial systems.

Manufactured from NBR (nitrile butadiene rubber), this rubber seal offers excellent resistance to mineral oils, greases, fuels, and many commonly used industrial fluids. Thanks to these properties, the O-Ring 100x4 NBR is one of the most frequently selected technical sealing components in mechanical engineering, maintenance operations, and equipment manufacturing. Its balanced elastomer structure ensures consistent elasticity, controlled compression, and high durability even under continuous load and pressure variations.

This rubber gasket is commonly used as a static seal in flanges, covers, valve housings, and pump bodies, as well as a dynamic seal in pistons, rods, and rotating assemblies. The precise geometry supports uniform surface contact, reducing the risk of leakage and minimizing wear of mating components. As a standard-size O-Ring, it integrates easily into existing grooves and sealing designs, making it suitable for both new installations and replacement during service operations.

The O-Ring 100x4 NBR is widely applied in industrial machinery, hydraulic power units, compressors, gear systems, and general-purpose equipment where chemical resistance and predictable sealing behavior are essential. Its reliability supports reduced downtime, stable system pressure, and extended maintenance intervals, which are key requirements for B2B customers and industrial buyers.

FAQ - Frequently Asked Questions

What does O-Ring 100x4 mean?
It refers to an O-Ring with a 100 mm inner diameter and a 4 mm cross-section.

What is NBR rubber suitable for?
NBR is suitable for applications involving oils, fuels, greases, and many industrial fluids.

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

Is this O-Ring suitable for dynamic sealing?
Yes, it can be used for both static and dynamic sealing when properly installed.

Is this a standard industrial size?
Yes, 100x4 is a widely used standard size in industrial sealing systems.