O-ring 90x20 NBR 50 ShA

Flexible NBR O-ring with 50 ShA hardness

Technical sealing solution for low to medium pressure systems

Reliable performance in industrial applications

Technical Specification and Application

The O-ring 90x20 NBR 50 is a flexible technical sealing ring designed for applications requiring enhanced elasticity and reliable static sealing performance. The 90x20 mm dimension refers to a 90 mm inner diameter and a 20 mm cross-section, making it suitable for larger sealing grooves and heavy-duty housings.

Manufactured from NBR (nitrile rubber), this O-ring provides strong resistance to mineral oils, greases, fuels, and industrial fluids. With a hardness of 50 ShA, it offers greater flexibility compared to standard 70 ShA or 90 ShA compounds. This improved elasticity allows better surface adaptation and efficient sealing in low to medium pressure environments.

The O-ring functions as a rubber gasket and sealing ring in covers, flanges, tanks, industrial housings, and light hydraulic systems. In technical supply markets, it is commonly searched as “O-ring 90x20 NBR”, “NBR 50 sealing ring”, or “industrial rubber seal 90x20”.

Typical operating temperature range for NBR compounds is approximately -30°C to +100°C, depending on the working medium and pressure conditions. Thanks to its elasticity and chemical resistance, this O-ring is suitable for various industrial applications, particularly where easy installation and reliable static sealing are required.

The O-ring 90x20 NBR 50 is recommended for maintenance departments, machine manufacturers, and technical wholesalers seeking durable and adaptable sealing components for industrial systems.

Key Features

• Type: O-ring / sealing ring

• Dimensions: 90x20 mm

• Material: NBR (nitrile rubber)

• Hardness: 50 ShA

• High resistance to oils and lubricants

• Suitable for hydraulic and industrial sealing systems

FAQ

What material is the O-ring 90x20 made from?
It is made from NBR, a nitrile rubber compound resistant to oils, fuels, and greases.

What does 50 ShA hardness mean?
It indicates a softer and more flexible compound, improving sealing in low to medium pressure applications.

Where can this O-ring be used?
In static sealing applications such as tanks, housings, covers, and light hydraulic systems.

What is the operating temperature range?
Typically from around -30°C to +100°C, depending on working conditions.