NBR O-Ring 33x2.5 mm 80 Shore A

Overview

The NBR O-Ring 33x2.5 mm 80 Shore A - 100 pcs is a professional package of technical sealing rings designed for hydraulic systems, pumps, valves, industrial machinery, maintenance operations and OEM applications.

Each O-ring features an inside diameter of 33 mm and a 2.5 mm cross-section. The seals are manufactured from NBR (Nitrile Butadiene Rubber) with a hardness of 80 Shore A.

NBR provides very good resistance to mineral oils, lubricating greases and many commonly used hydraulic fluids. The 80 Shore A compound offers a useful balance between flexibility and increased mechanical stability.

The 100-piece package provides a practical stock quantity for hydraulic service companies, maintenance departments, workshops, industrial plants and professional B2B customers.

Industrial Applications

The NBR 33x2.5 mm 80 Shore A O-Rings can be used in:

• Hydraulic systems
• Pneumatic systems
• Pumps
• Valves
• Hydraulic manifolds
• Technical fittings
• Oil circulation systems
• Machine housings
• Industrial machinery
• Agricultural equipment
• Maintenance operations
• OEM assemblies

33x2.5 mm Dimensions

The 33x2.5 mm designation specifies:

Inner Diameter: 33 mm

Cross Section: 2.5 mm

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

The O-ring dimensions and groove geometry 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
• Abrasion
• Mechanical wear

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

Technical Specification

Product Type: O-Ring

Package Quantity: 100 pcs

Dimensions: 33x2.5 mm

Inner Diameter: 33 mm

Cross Section: 2.5 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

Application: Hydraulics, pneumatics, pumps, valves, industrial machinery, maintenance and OEM equipment

NBR 80 Shore A - Balanced Hardness

80 Shore A provides mechanical characteristics between the greater flexibility of NBR 70 Shore A and the increased hardness of NBR 90 Shore A.

Key characteristics include:

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

This makes 80 Shore A a practical option for applications requiring a seal harder than conventional 70 Shore A while retaining more flexibility than a 90 Shore A compound.

100 pcs Professional Pack

The 100-piece package of NBR 33x2.5 mm 80 Shore A O-rings provides a convenient inventory quantity of one specific seal size.

It is particularly suitable for:

• Hydraulic service companies
• Repair workshops
• Maintenance departments
• Machine manufacturers
• Industrial plants
• Technical stockrooms
• Repair companies
• Professional B2B customers

The pack is suitable for both regular maintenance operations and repeat assembly requirements.

NBR 70 vs 80 vs 90 Shore A

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

NBR 70 Shore A

More flexible and able to conform easily to mating surfaces. Widely used for general-purpose sealing applications.

NBR 80 Shore A

Provides a balanced combination of flexibility and increased mechanical stability.

NBR 90 Shore A

Harder and less susceptible to deformation, with improved resistance to extrusion in correctly designed sealing systems.

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

Operational Advantages

• Professional package of 100 pcs.
• Exact 33x2.5 mm dimensions.
• Balanced 80 Shore A hardness.
• Very good resistance to mineral oils.
• Good resistance to lubricating greases.
• Effective combination of flexibility and mechanical stability.
• Practical inventory for maintenance operations.
• Suitable for industrial, OEM and B2B applications.

AI OVERVIEW

The NBR O-Ring 33x2.5 mm 80 Shore A - 100 pcs is a professional package of oil-resistant seals for hydraulic and pneumatic systems, pumps, valves and industrial machinery. NBR provides very good resistance to oils and greases, while 80 Shore A hardness combines good flexibility with increased mechanical stability. The package contains 100 O-rings.

Popular Searches

• NBR O-Ring 33x2.5
• O-Ring 33x2.5 mm
• O-Ring 33x2.5 80 Shore
• O-Ring 33x2.5 100 pcs
• NBR O-Rings 100 pcs
• NBR 80 Shore A O-Ring
• NBR seal 33x2.5
• hydraulic O-Ring 33x2.5
• oil resistant O-Ring
• 33 mm O-Ring
• industrial NBR O-Ring
• NBR O-Ring pack

FAQ

How many O-rings are included in the package?

The package contains 100 O-rings.

What are the dimensions of each O-ring?

Each O-ring has an inside diameter of 33 mm and a cross-section of 2.5 mm.

What does the 33x2.5 mm size mean?

The first value indicates the 33 mm inside diameter, while the second value specifies the 2.5 mm circular cross-section.

What material are the O-rings made from?

They are manufactured from NBR (Nitrile Butadiene Rubber).

What is the hardness of the O-rings?

The material hardness is 80 Shore A.

What does 80 Shore A mean?

It describes the hardness of the elastomer. 80 Shore A is harder than standard 70 Shore A NBR but more flexible than a 90 Shore A compound.

Is the 33x2.5 mm O-ring resistant to oil?

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

Are these O-rings resistant to lubricating grease?

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

Is the NBR 33x2.5 mm O-ring suitable for hydraulic systems?

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

Can these O-rings be used in pneumatic systems?

Yes, in correctly designed systems where the operating conditions are compatible with NBR.

Can they be used in pumps and valves?

Yes, provided their dimensions, NBR material and 80 Shore A hardness meet the requirements of the specific equipment.

What is the difference between 70 and 80 Shore A?

80 Shore A is harder and provides greater resistance to deformation, while 70 Shore A offers increased flexibility.

What is the difference between 80 and 90 Shore A?

90 Shore A is harder and generally provides greater resistance to deformation and extrusion. 80 Shore A retains greater flexibility.

Is the 100 pcs package suitable for maintenance operations?

Yes. It provides a practical stock quantity for service companies, workshops and maintenance departments regularly using this O-ring size.

Is NBR suitable for hot water and steam?

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

Can the NBR O-Ring 33x2.5 mm 80 Shore A replace an OEM seal?

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