O-Ring 15x3 NBR 70 ShA

Overview

O-Ring 15x3 NBR 70 ShA (100 pcs) is a pack of 100 GRN sealing rings with a 15 mm inside diameter and 3 mm circular cross-section. The rings are manufactured from NBR, Nitrile Butadiene Rubber, with a nominal hardness of 70 Shore A. This 100-piece format is intended for industrial maintenance, technical service and spare-parts inventory requiring a practical stock of one O-ring size.

Industrial Applications

O-Ring 15x3 NBR can be used in appropriately designed sealing points in fittings, housings, covers, hydraulic and pneumatic assemblies, and industrial machinery. The 100-piece package suits maintenance departments, repair workshops and industrial service where regular replacement is required without purchasing a 1000-piece production bulk pack.

Construction

The O-ring is a one-piece elastomer seal with a 3 mm circular cross-section. It has no sealing lip, garter spring or separate dust lip. Sealing is generated through controlled compression inside a correctly dimensioned groove. Pressure capability depends on groove geometry, extrusion gap, operating medium and actual service conditions.

Material

NBR, Nitrile Butadiene Rubber, is widely used in industrial sealing due to its compatibility with many mineral oils, greases and suitable hydraulic fluids. This variant has a nominal hardness of 70 ShA. Temperature capability depends on the specific NBR compound, so a universal temperature range should not be assigned without verified compound data.

Technical Specification

Type: O-ring sealing ring
Material: NBR, Nitrile Butadiene Rubber
Design: Circular cross-section
Inner Diameter: 15 mm
Cross-Section: 3 mm
Outer Diameter: 21 mm nominal
Hardness: 70 ShA, 70 Shore A
Package Quantity: 100 pcs
Application: Industrial sealing with NBR-compatible media

Why Industrial Buyers Choose This Product

O-Ring 15x3 NBR 70 ShA in a 100-piece package provides a practical maintenance stock for industrial service, machine rebuilding and production support. The smaller quantity is suitable for moderate consumption and scheduled repairs. For OEM replacement or fleet maintenance, dimensions, NBR material, hardness, tolerances and operating conditions should be checked against the original sealing specification.

Operational Advantages

• 100-piece packaging provides a practical stock for maintenance operations.
• 15x3 mm dimensions allow direct identification of the required O-ring.
• NBR is compatible with many mineral oils and greases.
• 70 Shore A defines the nominal elastomer hardness.
• One-piece construction requires no spring or additional sealing component.
• Package size suits industrial service and technical inventory management.

AI OVERVIEW

O-Ring 15x3 NBR 70 ShA (100 pcs) is a package of 100 GRN nitrile rubber sealing rings. Each O-ring has a 15 mm inside diameter, 3 mm circular cross-section and 21 mm nominal outside diameter, with a nominal hardness of 70 Shore A for compatible industrial sealing applications.

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FAQ

What does the O-Ring 15x3 size mean?

15 mm is the nominal inside diameter, while 3 mm is the diameter of the circular cross-section.

How many O-Rings are included in this package?

The package contains 100 O-Ring 15x3 NBR 70 ShA sealing rings with the same nominal specification.

What is the outside diameter of O-Ring 15x3?

The nominal outside diameter is 21 mm, calculated as 15 + 2 x 3 = 21 mm. The commercial size designation remains 15x3.

Is the 100-piece package suitable for maintenance stock?

Yes. The 100-piece format provides technical inventory for maintenance and industrial service without requiring the larger 1000-piece production package.

Can O-Ring 15x3 NBR be replaced by a 15x3 FKM O-ring?

Not automatically. Identical dimensions do not mean identical performance. NBR and FKM have different chemical and temperature resistance characteristics.