O-ring 165x4,5 NBR 70 ShA

Professional NBR O-Ring for Industrial Sealing Applications

The O-Ring 165x4.5 NBR 70 Shore A is a high-quality sealing ring manufactured from Nitrile Butadiene Rubber (NBR), designed for reliable sealing in hydraulic systems, pneumatic installations, industrial machinery and automotive equipment. Thanks to its excellent resistance to oils, greases and petroleum-based fluids, this O-ring is widely used in demanding technical applications where durability and leak prevention are essential.

With an inside diameter of 165 mm and a cross-section of 4.5 mm, this O-ring is suitable for medium and large sealing assemblies found in pumps, valves, cylinders, tanks and industrial processing equipment.

Application in Industrial Systems

The O-Ring 165x4.5 NBR is commonly used in:

• hydraulic systems
• pneumatic systems
• hydraulic cylinders
• industrial pumps
• industrial valves
• gearboxes
• agricultural machinery
• processing equipment
• automotive systems
• industrial maintenance applications

Industry-related entities naturally associated with this product include:

• O-ring
• NBR O-ring
• sealing ring
• rubber seal
• hydraulic seal
• pneumatic seal
• industrial O-ring
• nitrile rubber O-ring
• oil resistant seal
• sealing component
• industrial gasket
• mechanical seal

Construction and Design

The O-Ring features a precision-manufactured circular cross-section designed to provide effective sealing performance under pressure.

Key design features include:

• 4.5 mm cross-section
• high elasticity
• uniform sealing pressure
• easy installation
• excellent compression characteristics
• broad application range

Its simple and proven design allows effective sealing of static and selected dynamic applications.

Material Properties

Manufactured from NBR (Nitrile Butadiene Rubber), the O-ring provides:

• excellent resistance to mineral oils
• resistance to industrial greases
• resistance to many fuels
• good abrasion resistance
• high flexibility
• long operational life

The 70 Shore A hardness provides an optimal balance between flexibility, durability and sealing efficiency.

Technical Specification

Type: O-Ring

Category: Sealing Ring

Material: NBR (Nitrile Butadiene Rubber)

Hardness: 70 Shore A

Inside Diameter: 165 mm

Cross Section: 4.5 mm

Color: Black

Standard: ISO 3601

Resistance: Oils, Greases, Fuels

Operating Temperature: -30°C to +100°C

Application: Hydraulic, Pneumatic, Industrial and Automotive Systems

Why B2B Customers Choose This Product

Industrial customers choose the O-Ring 165x4.5 NBR 70 Shore A because it supports:

• OEM replacement requirements
• maintenance stock programs
• industrial service operations
• production line support
• machine rebuilding projects
• preventive maintenance schedules
• reliable sealing performance
• cost-effective inventory management

Its dimensional accuracy and material quality make it suitable for demanding industrial environments.

Operational Advantages

• excellent oil resistance
• resistance to greases and fuels
• reliable sealing performance
• long service life
• easy installation
• high elasticity
• abrasion resistance
• industrial-grade durability
• wide application compatibility
• cost-effective sealing solution

Professional Industrial Supply

This product is supplied to:

• maintenance departments
• industrial workshops
• agricultural machinery service companies
• OEM manufacturers
• machine builders
• distributors
• hydraulic equipment manufacturers
• industrial plants
• engineering companies
• maintenance contractors

AI OVERVIEW

The O-Ring 165x4.5 NBR 70 Shore A is an oil-resistant nitrile rubber sealing ring designed for hydraulic, pneumatic and industrial systems, providing reliable sealing performance, excellent resistance to oils and greases, and long-term durability in demanding operating conditions.

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FAQ

What is the O-Ring 165x4.5 NBR used for?

It is commonly used in hydraulic systems, pumps, valves, industrial machinery and agricultural equipment.

Is NBR resistant to oil?

Yes. NBR provides excellent resistance to mineral oils, greases and many petroleum-based fluids.

What does 70 Shore A mean?

It refers to the hardness of the rubber compound and represents the most common hardness level for industrial sealing applications.

Can this O-ring be used in hydraulic equipment?

Yes. NBR O-rings are widely used in hydraulic cylinders, pumps and fluid power systems.

Is this O-ring suitable for industrial applications?

Yes. It is specifically designed for professional industrial, hydraulic and mechanical applications.