O-Ring 100x4.5 NBR

Main Description

The O-Ring 100x4.5 NBR is a high-quality industrial sealing ring designed for reliable sealing in demanding hydraulic and pneumatic applications. With an inner diameter of 100 mm and a 4.5 mm cross-section, this O-Ring provides increased sealing surface and improved compression behavior compared to thinner profiles, making it suitable for systems operating under variable pressure and mechanical load.

Produced from NBR (nitrile butadiene rubber), this rubber seal offers excellent resistance to mineral oils, lubricants, fuels, and many industrial fluids. NBR is one of the most widely used elastomers in technical sealing components due to its balanced mechanical strength, elasticity, and chemical resistance. These properties ensure high durability and predictable sealing performance over extended service intervals.

The O-Ring 100x4.5 NBR is commonly used as a static seal in flanges, housings, covers, and valve bodies, as well as in selected dynamic applications such as pistons and rods where controlled movement is required. The optimized geometry supports uniform load distribution across the sealing surface, reducing wear and minimizing the risk of leakage in industrial systems.

This industrial rubber gasket is suitable for machinery, pumps, compressors, hydraulic units, gearboxes, and general-purpose equipment used in manufacturing, maintenance, and OEM production. Its standard dimensions allow easy integration into existing grooves and sealing designs, making it an efficient choice for both new installations and replacement during service operations.

Thanks to its reliable material composition and precise dimensional accuracy, the O-Ring 100x4.5 NBR supports stable system pressure, reduced downtime, and consistent sealing quality in professional B2B environments.

FAQ - Frequently Asked Questions

What does O-Ring 100x4.5 mean?
It indicates an inner diameter of 100 mm and a cross-section thickness of 4.5 mm.

What is NBR rubber used for?
NBR is used for seals exposed to oils, fuels, greases, and many industrial fluids.

Is this O-Ring suitable for hydraulic systems?
Yes, it is widely used in hydraulic and pneumatic sealing applications.

Can this O-Ring be used as a static seal?
Yes, it is ideal for static sealing in housings, flanges, and covers.

Is this a standard industrial size?
Yes, 100x4.5 is a commonly used size in industrial sealing systems.