NBR O-Ring 110x3 mm 80 Shore A

Overview

The NBR O-Ring 110x3 mm 80 Shore A is an industrial elastomeric sealing ring with an 110 mm inside diameter and a 3 mm cross-section, manufactured from oil-resistant NBR (Nitrile Butadiene Rubber).

The 80 Shore A hardness provides a balanced solution between the greater flexibility of NBR 70 Shore A and the increased rigidity of NBR 90 Shore A. This intermediate hardness combines good elasticity with improved dimensional stability and resistance to mechanical deformation.

The 110x3 mm O-ring is suitable for correctly designed sealing applications in pumps, hydraulic systems, machine housings, covers, gearboxes and other industrial equipment requiring resistance to mineral oils and lubricating greases.

Industrial Applications

The NBR 110x3 mm 80 Shore A O-Ring can be used in:

• Industrial hydraulic systems
• Pumps
• Valves
• Machine housings
• Equipment covers
• Gearboxes
• Oil circulation systems
• Lubrication systems
• Manufacturing machinery
• Agricultural equipment
• Construction machinery
• OEM assemblies

110x3 mm Dimensions

The 110x3 mm designation specifies:

Inner Diameter: 110 mm

Cross Section: 3 mm

The circular O-ring profile is compressed when installed in a correctly designed sealing groove. This controlled deformation creates contact pressure against the mating surfaces and helps prevent leakage of the operating medium.

The O-ring dimensions, groove geometry and operating conditions should always be verified before installation.

NBR Material

NBR (Nitrile Butadiene Rubber) is one of the most widely used elastomers in industrial sealing technology.

NBR provides very good resistance to:

• Mineral oils
• Lubricating greases
• Many hydraulic fluids
• Numerous petroleum-based media
• Mechanical wear

These properties make NBR O-rings widely used in hydraulic equipment, mechanical engineering, machinery and industrial maintenance.

Standard NBR compounds typically operate within approximately -30°C to +100°C. Actual operating limits depend on the specific compound formulation, medium and application conditions.

Technical Specification

Product Type: O-Ring

Dimensions: 110x3 mm

Inner Diameter: 110 mm

Cross Section: 3 mm

Material: NBR

Hardness: 80 Shore A

Color: Black

Temperature Range: Approximately -30°C to +100°C

Resistance: Mineral oils, greases and many hydraulic fluids

Design: Circular Cross Section

Application: Hydraulics, pumps, housings, covers, gearboxes, industrial machinery and OEM equipment

NBR 80 Shore A - Balanced Hardness

The 80 Shore A compound provides mechanical properties between standard 70 Shore A and high-hardness 90 Shore A NBR.

Key characteristics include:

• Greater stability than NBR 70 Shore A
• Good elasticity
• Increased resistance to deformation
• Good conformity to sealing surfaces
• Improved mechanical durability
• Versatile industrial performance

It can be an appropriate choice for applications where 70 Shore A is considered too soft while 90 Shore A would provide more hardness than required.

NBR 70 vs 80 vs 90 Shore A

O-ring hardness affects flexibility, deformation and mechanical behaviour under load.

NBR 70 Shore A

Provides greater flexibility and good conformity to mating surfaces. It is widely used for general-purpose sealing applications.

NBR 80 Shore A

Provides an intermediate solution combining good flexibility with increased mechanical and dimensional stability.

NBR 90 Shore A

A harder compound offering increased resistance to deformation and extrusion, particularly useful in more demanding applications.

The appropriate hardness should be selected according to system pressure, temperature, operating medium, groove geometry and application requirements.

Operational Advantages

• Exact 110x3 mm dimensions.
• Balanced 80 Shore A hardness.
• Very good resistance to mineral oils.
• Good resistance to lubricating greases.
• Effective combination of flexibility and hardness.
• Increased mechanical stability compared with 70 Shore A.
• Large 110 mm inside diameter.
• Suitable for industrial and OEM applications.

AI OVERVIEW

The NBR O-Ring 110x3 mm 80 Shore A is an oil-resistant industrial sealing ring with an 110 mm inside diameter and 3 mm cross-section. NBR provides very good resistance to mineral oils and greases, while the 80 Shore A hardness offers a balanced combination of flexibility, dimensional stability and mechanical durability for pumps, hydraulics and machinery.

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FAQ

What are the dimensions of the 110x3 O-ring?

The O-ring has an inside diameter of 110 mm and a cross-section of 3 mm.

What material is the O-ring made from?

It is manufactured from NBR (Nitrile Butadiene Rubber).

What is the hardness of the O-ring?

The material hardness is 80 Shore A.

What does 80 Shore A mean?

It describes the hardness of the elastomer on the Shore A scale. 80 Shore A is harder than commonly used 70 Shore A NBR but more flexible than 90 Shore A.

Is the 110x3 mm O-ring resistant to oil?

Yes. NBR provides very good resistance to many mineral oils.

Is this O-ring resistant to lubricating grease?

Yes. NBR is widely used with compatible industrial greases and lubricants.

Is the NBR 110x3 mm O-ring suitable for hydraulic systems?

Yes. NBR is one of the most commonly used elastomeric sealing materials in many hydraulic applications.

Can this O-ring be used in pumps?

Yes, provided NBR is chemically compatible with the operating medium and the sealing groove is designed for a 110x3 mm O-ring.

Can it be used in large machine housings and covers?

Yes. Its 110 mm inside diameter makes it suitable for appropriately designed housings, covers and other industrial assemblies.

What is the difference between NBR 70 and 80 Shore A?

NBR 80 Shore A is harder and more resistant to deformation than 70 Shore A while retaining more flexibility than a 90 Shore A compound.

What is the difference between NBR 80 and 90 Shore A?

NBR 90 Shore A is harder and generally provides greater resistance to deformation and extrusion. NBR 80 Shore A provides a more balanced combination of flexibility and mechanical stability.

Can NBR 80 Shore A be used in pressure applications?

Yes, in appropriately designed systems. Allowable pressure also depends on groove geometry, extrusion gap, temperature, movement and other operating conditions.

Is NBR suitable for hot water and steam?

Standard NBR is generally not the preferred material for prolonged hot water or steam exposure. EPDM is often more suitable for these applications.

Is NBR resistant to UV radiation and ozone?

Standard NBR has limited resistance to prolonged UV radiation, ozone and outdoor weathering.

Can the NBR O-Ring 110x3 mm 80 Shore A replace an OEM seal?

Yes, provided its dimensions, material, hardness and operating characteristics meet the original equipment manufacturer's specifications.