O-ring 115x3,5 NBR

Reliable Industrial O-Ring for Hydraulic and Mechanical Systems

The O-Ring 115x3.5 NBR 70 Shore A is a high-quality sealing ring manufactured from Nitrile Butadiene Rubber (NBR), designed for use in hydraulic, pneumatic, automotive and industrial equipment. Thanks to its excellent resistance to oils, greases and petroleum-based fluids, this O-ring is widely used wherever reliable sealing performance and long service life are required.

With an inside diameter of 115 mm and a cross-section of 3.5 mm, this sealing ring is suitable for medium and large-sized sealing applications in industrial machinery, hydraulic systems, pumps, valves and agricultural equipment.

Application in Industrial Systems

The O-Ring 115x3.5 NBR is commonly used in:

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

Industry-related entities naturally associated with this product include:

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

Construction and Design

The O-Ring features a precision-manufactured circular cross-section that creates effective sealing between mating surfaces.

Key design characteristics include:

• 3.5 mm cross-section
• high elasticity
• uniform compression
• excellent sealing performance
• easy installation
• versatile application range

The simple yet highly efficient design helps prevent leakage while protecting systems against contamination and pressure loss.

Material Properties

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

• excellent resistance to mineral oils
• resistance to lubricating greases
• resistance to many fuels
• good abrasion resistance
• high flexibility
• long service life

The 70 Shore A hardness offers an optimal balance between flexibility and durability, making it the most popular hardness grade for industrial sealing applications.

Technical Specification

Type: O-Ring

Category: Sealing Ring

Material: NBR (Nitrile Butadiene Rubber)

Hardness: 70 Shore A

Inside Diameter: 115 mm

Cross Section: 3.5 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 115x3.5 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
• high-volume industrial usage
• reliable sealing performance

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

Operational Advantages

• excellent oil resistance
• resistance to greases and fuels
• reliable sealing performance
• long operational life
• easy installation
• high elasticity
• abrasion resistance
• wide industrial compatibility
• low maintenance requirements
• 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 115x3.5 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 115x3.5 NBR used for?

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

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 indicates the hardness of the rubber compound and represents the most commonly used hardness for industrial O-rings.

Can this O-ring be used in hydraulic systems?

Yes. NBR O-rings are widely used in hydraulic equipment and fluid power systems.

Is this O-ring suitable for industrial applications?

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