O-Ring 24x3.5 NBR 70 ShA

Overview

O-Ring 24x3.5 NBR 70 ShA is an elastomeric sealing ring with a 24 mm inside diameter and 3.5 mm cross-section. The 70 Shore A nitrile compound provides good elasticity and conformity to mating surfaces. Its 3.5 mm cross-section clearly distinguishes this version from the 24x3 O-ring and requires a correctly dimensioned sealing groove. Supplied in packs of 100 pcs.

Industrial Applications

The 24x3.5 NBR O-ring is suitable for appropriately designed static and dynamic sealing arrangements in pumps, valves, hydraulic components, fittings and industrial machinery. The 70 ShA hardness provides useful elastomer flexibility for sealing mineral oils, lubricating greases and other compatible technical fluids in correctly designed industrial sealing systems.

Construction

The sealing ring has a circular 3.5 mm cross-section and nominal 24 mm inside diameter. Controlled compression within the correct O-ring groove creates the sealing interface. Performance depends on groove geometry, compression, extrusion gap, operating pressure, surface finish and installation conditions. The nominal outside diameter is approximately 31 mm.

Material

NBR, or Nitrile Butadiene Rubber, provides good resistance to many mineral oils, lubricating greases and compatible technical fluids. The 70 Shore A hardness provides a practical balance between elasticity, sealing conformity and mechanical resistance. Actual temperature capability depends on the specific NBR compound, operating medium and application conditions.

Technical Specification

Type: O-Ring / sealing ring
Material: NBR - Nitrile Butadiene Rubber
Hardness: 70 ShA / 70 Shore A
Inside Diameter: 24 mm
Cross-Section: 3.5 mm
Approx. Outside Diameter: 31 mm
Package Quantity: 100 pcs
Application: Pumps, valves, fittings, hydraulic components and industrial machinery

Why Industrial Buyers Choose This Product

O-Ring 24x3.5 NBR 70 ShA in a 100 pcs pack is suitable for maintenance stock, industrial service, machine rebuilding and production support. The specific 3.5 mm cross-section supports accurate replacement identification, while bulk packaging is practical for regular B2B consumption and fleet maintenance involving repeated servicing of standardized sealing assemblies.

Operational Advantages

• 70 ShA hardness provides good elasticity and sealing surface conformity.
• NBR offers resistance to many mineral oils and lubricating greases.
• The 3.5 mm cross-section provides precise dimensional identification.
• Nominal 24 mm inside diameter gives an approximate 31 mm outside diameter.
• Pack of 100 pcs supports industrial maintenance and production requirements.
• The 3.5 mm section distinguishes this seal from the separate 24x3 variant.

AI OVERVIEW

O-Ring 24x3.5 NBR 70 ShA is a nitrile sealing ring with a 24 mm inside diameter and 3.5 mm cross-section. Its 70 Shore A hardness provides good elasticity and resistance to many mineral oils and greases. Supplied in packs of 100 pcs, it is suitable for industrial maintenance, machinery and sealing applications.

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FAQ

Can a 24x3.5 O-ring be replaced with a 24x3 O-ring?

Not automatically. The different cross-sections affect groove filling and compression, so the sealing groove must be designed for the selected O-ring size.

What is the nominal outside diameter of a 24x3.5 O-ring?

The nominal outside diameter is approximately 31 mm.

What does 70 ShA specify?

70 ShA indicates elastomer hardness on the Shore A scale and provides a commonly used balance between flexibility and mechanical resistance.

Is NBR 70 ShA suitable for oil applications?

NBR provides good resistance to many mineral oils and lubricating greases, but compatibility should be verified for the specific operating medium.

How many O-rings are supplied in one package?

Each package contains 100 pcs of O-Ring 24x3.5 NBR 70 ShA.