O-ring 185x3 NBR 70 ShA Nitrile Rubber Sealing Ring

Construction and design

O-ring 185x3 NBR 70 ShA is a nitrile rubber sealing ring designed for reliable sealing in industrial machinery, hydraulic systems and mechanical equipment. This component belongs to the category of technical sealing O-rings NBR widely used in industrial installations where durable elastomer sealing elements are required.

The sealing ring is manufactured from NBR nitrile rubber with hardness 70 ShA, providing a balanced combination of elasticity, compression resistance and chemical stability. Nitrile rubber is known for its resistance to mineral oils, lubricants, fuels and many technical fluids commonly present in industrial systems.

The design of the O-ring is based on a circular cross section that allows uniform compression inside a sealing groove. When installed, the O-ring compresses between two surfaces and forms a tight barrier that prevents leakage of fluids or gases.

Because of its reliable sealing characteristics, the O-ring 185x3 NBR 70 ShA nitrile rubber sealing ring is commonly used in industrial maintenance, mechanical assemblies and technical installations where dependable sealing performance is required.

Industrial applications

Within the category of technical sealing O-rings NBR, the dimension 185x3 mm is used in larger sealing assemblies found in industrial equipment, tanks, hydraulic units and machine housings.

O-ring 185x3 NBR 70 ShA is frequently used in hydraulic systems, pump assemblies, industrial valves and mechanical equipment where large diameter sealing elements are required. It can also be installed in covers, inspection ports and structural sealing interfaces of machinery.

The nitrile rubber compound allows the sealing ring to operate effectively in environments where lubricants, oils and mechanical fluids are present. This makes the O-ring suitable for industrial machinery, automotive systems, maintenance workshops and engineering installations.

Search queries related to this size often include O-ring 185x3 NBR, nitrile rubber O-ring 185x3 mm, industrial sealing ring 185x3 and NBR O-ring 185x3 70 ShA.

Dimensional compatibility

The designation O-ring 185x3 refers to an inner diameter of 185 mm and a cross section thickness of 3 mm. These dimensions are commonly used in industrial sealing grooves designed for elastomer O-rings.

Correct dimensional compatibility ensures effective compression and sealing performance. When properly installed, the nitrile rubber sealing ring expands slightly inside the groove and forms a reliable seal against fluid leakage.

Because of the larger diameter, O-ring 185x3 NBR 70 ShA is often used in industrial equipment housings, sealing covers and larger hydraulic assemblies where standard elastomer sealing rings are required.

Operational advantages

NBR O-rings are widely used in industrial sealing applications due to their durability and cost efficiency. The O-ring 185x3 NBR 70 ShA nitrile rubber sealing ring provides stable sealing performance across many mechanical and hydraulic systems.

The 70 ShA hardness provides the proper balance between flexibility and structural strength, allowing the sealing ring to adapt to groove geometry while maintaining reliable sealing pressure.

In addition, nitrile rubber offers strong resistance to oils and lubricants, which helps extend the service life of the sealing component in industrial operating conditions.

Technical specification

Type: O-ring
Product type: nitrile rubber sealing ring
Material: NBR nitrile rubber
Hardness: 70 ShA
Inner diameter: 185 mm
Cross section thickness: 3 mm
Size designation: 185x3
Chemical resistance: mineral oils, fuels, lubricants
Application: industrial sealing systems, hydraulics, mechanical equipment
Function: sealing mechanical joints and fluid systems

FAQ

What is the O-ring 185x3 NBR 70 ShA used for
It is used as a nitrile rubber sealing ring in hydraulic systems, machine housings, valves and industrial equipment.

Is NBR suitable for oil resistant sealing
Yes. NBR nitrile rubber offers good resistance to mineral oils, lubricants and many industrial fluids.

What does the 70 ShA hardness mean
70 ShA indicates the hardness of the rubber compound and provides balanced elasticity suitable for industrial sealing applications.

Where are large O-rings such as 185x3 used
They are commonly used in large equipment housings, industrial covers, tanks and hydraulic assemblies.

Can this O-ring be used in hydraulic equipment
Yes. O-ring 185x3 NBR 70 ShA is suitable for hydraulic systems and mechanical sealing applications.