O-ring 50x4 NBR

Industrial and Agricultural Applications

The O-Ring 50x4 NBR 70 ShA is a precision technical sealing solution designed for use in demanding industrial, hydraulic, pneumatic, and agricultural applications. It is commonly applied in static and semi-dynamic sealing points where resistance to oils, fuels, and mechanical stress is required.

Typical applications include:

• MTZ (Belarus) tractors - front axle sealing (part reference 503001027),

• Claas Jaguar forage harvesters (e.g. model 860) - upper rear pressing roller systems,

• Amazone sprayers - liquid handling systems and distributor sections,

• hydraulic pumps, valves, cylinders, and control blocks,

• industrial machinery and mechanical equipment.

NBR 70 ShA Material - Resistance and Reliability

This rubber gasket is manufactured from NBR (nitrile butadiene rubber) with a hardness of 70 Shore A, which is the industry standard for hydraulic and pneumatic sealing. The material offers high resistance to mineral oils, greases, fuels, and common operating fluids, ensuring long service life and dimensional stability under varying pressure conditions.

NBR 70 ShA provides an optimal balance between elasticity and deformation resistance, making this sealing ring suitable for continuous industrial operation and maintenance use.

Technical Data

• Type: O-ring / sealing ring

• Inner diameter: 50 mm

• Cross section: 4 mm

• Material: NBR (nitrile rubber)

• Hardness: 70 Shore A

• Operating temperature range: approx. -30°C to +100°C

• Color: black

• Working conditions: static and semi-dynamic sealing

• Packaging: 100 pcs

Main Description

The O-Ring 50x4 NBR 70 ShA is a high-quality technical rubber seal designed for reliable operation in hydraulic, pneumatic, and oil-based systems. Manufactured with precise tolerances, this sealing ring ensures tight and repeatable sealing performance in industrial and agricultural machinery.

Thanks to its NBR compound, the o-ring delivers excellent resistance to oils, fuels, and lubricants commonly used in heavy-duty equipment. The 70 Shore A hardness provides mechanical strength while maintaining sufficient flexibility to compensate for minor tolerances and pressure variations.

This sealing solution is widely used in MTZ tractors, Claas Jaguar harvesters, and Amazone spraying systems, where operational reliability and leak prevention are critical. The pack of 100 pieces is ideal for maintenance departments, service workshops, and production facilities that require consistent quality and immediate availability of spare seals.

FAQ - Technical Questions

Is the O-ring 50x4 NBR suitable for hydraulic systems?
Yes, NBR 70 ShA is a standard material for hydraulic and pneumatic sealing applications.

What is the operating temperature range?
Approximately from -30°C to +100°C under standard industrial conditions.

Can this O-ring be used in MTZ, Claas, and Amazone machines?
Yes, this size and material are commonly used in MTZ Belarus tractors, Claas Jaguar harvesters, and Amazone sprayers.

Is this product intended for professional use?
Yes, it is designed for industrial maintenance, service operations, and B2B applications.