O-ring 138x4.5 NBR 70 ShA

Industrial O-ring 138x4.5 NBR 70 ShA for Hydraulic and Technical Systems

The O-ring 138x4.5 NBR 70 ShA is a high quality technical sealing solution designed for hydraulic, pneumatic and industrial mechanical systems. Manufactured from nitrile rubber NBR with 70 ShA hardness, it provides excellent resistance to mineral oils, greases, fuels and standard operating media commonly used in industrial and automotive applications.

The 138x4.5 mm size makes this model ideal for assemblies requiring durable and leak tight sealing together with high mechanical resistance and stable operation under pressure. NBR is one of the most commonly used sealing elastomers thanks to its excellent balance between durability and cost efficiency.

Construction and Material Properties

The O-ring 138x4.5 NBR 70 ShA is manufactured from flexible nitrile rubber NBR providing stable operation in contact with oil based media and industrial lubricants.

Main product features:

• inner diameter: 138 mm
• cross section thickness: 4.5 mm
• material: NBR
• hardness: 70 ShA
• high resistance to oils and greases
• good mechanical durability
• high flexibility
• abrasion resistance
• stable operation under load

The 70 ShA hardness provides an optimal balance between sealing flexibility and resistance to deformation during operation.

Technical Parameters and Performance

The NBR 70 ShA O-ring is designed for standard industrial environments requiring durable and reliable sealing performance.

Technical snippet section:
The O-ring 138x4.5 NBR 70 ShA is an oil resistant technical sealing ring designed for hydraulics, pneumatics and industrial mechanical systems.

Technical specification:

• product type: O-ring
• material: NBR
• hardness: 70 ShA
• inner diameter: 138 mm
• thickness: 4.5 mm
• color: black
• resistant to mineral oils and greases
• ready for installation

Long tail dimensional keywords:

• O-ring 138x4.5 NBR 70 ShA
• rubber sealing ring 138x4.5
• NBR O-ring 138 mm
• industrial NBR O-ring
• hydraulic sealing ring NBR
• O-ring for hydraulic and pneumatic systems

Industrial Applications

The O-ring 138x4.5 NBR 70 ShA is widely used in systems requiring durable sealing resistant to oil based operating media.

Typical applications include:

• hydraulic systems
• industrial pneumatics
• lubrication systems
• industrial machinery
• agricultural equipment
• automotive applications
• pumps
• valves
• hydraulic cylinders
• technical systems

The NBR material provides stable performance in contact with mineral oils, fuels and industrial greases.

Operational Advantages

The O-ring 138x4.5 NBR 70 ShA delivers excellent operational durability together with reliable sealing performance in demanding working environments.

Key operational advantages:

• high resistance to oils and greases
• good mechanical durability
• long operational life
• high flexibility
• abrasion resistance
• universal industrial use

Warehouse and Store: Lublin, ul. Smoluchowskiego 1, building 4
24h shipping - fast order processing

FAQ

What are the dimensions of the O-ring 138x4.5?

The O-ring features an inner diameter of 138 mm and a cross section thickness of 4.5 mm.

What material is used for this O-ring?

The sealing ring is manufactured from nitrile rubber NBR.

What does 70 ShA hardness mean?

70 ShA indicates standard hardness providing a balanced combination of flexibility and mechanical resistance.

Is the NBR O-ring resistant to oils?

Yes, NBR material offers excellent resistance to mineral oils and greases.

Where are NBR O-rings commonly used?

NBR O-rings are widely used in hydraulics, pneumatics, automotive systems and industrial machinery.