NBR Oil Seal 10x18x4 A - Single Lip Rotary Shaft Seal

Overview

The NBR Oil Seal 10x18x4 A is a single-lip radial shaft seal with a 10 mm shaft diameter, 18 mm housing bore diameter, and 4 mm width.

Manufactured from NBR (Nitrile Butadiene Rubber), the seal features a primary sealing lip that operates against the rotating shaft surface. A garter spring supports the sealing lip and helps maintain consistent contact with the shaft.

Its compact 10x18x4 mm dimensions make it suitable for small mechanical assemblies where installation space is limited.

Technical Specification

Product Type: Radial shaft seal / oil seal

Design: A

Lip Design: Single lip

Material: NBR - Nitrile Butadiene Rubber

Shaft Diameter d: 10 mm

Housing Bore D: 18 mm

Width B: 4 mm

Dimensions: 10x18x4 mm

Primary Sealing Lip: Yes

Auxiliary Dust Lip: No

Garter Spring: Yes

Type A Single-Lip Design

The A design is a standard radial shaft seal configuration with an elastomer-covered outside diameter and a single primary sealing lip.

Unlike a double-lip AO/TC design, type A does not incorporate an additional dust lip. The spring-loaded primary lip provides the main sealing function against the shaft surface.

NBR Material

NBR (Nitrile Butadiene Rubber) is one of the most widely used elastomers for radial shaft seals.

It provides good resistance to many mineral oils, lubricating greases and compatible technical fluids. Its combination of mechanical properties and oil resistance makes NBR suitable for a broad range of standard industrial sealing applications.

Material compatibility should always be verified for the specific medium, temperature, shaft speed and operating conditions.

Industrial Applications

The NBR 10x18x4 A oil seal can be used in appropriately designed:

• Gearboxes
• Small electric motors
• Pumps
• Drive systems
• Industrial machinery
• Rotating mechanisms
• Mechanical equipment
• Technical assemblies

Operational Advantages

• Compact 10x18x4 mm dimensions.
• Single-lip type A design.
• NBR nitrile rubber material.
• Spring-loaded primary sealing lip.
• Elastomer-covered outside diameter.
• Designed for radial shaft sealing.

AI OVERVIEW

The NBR Oil Seal 10x18x4 A is a single-lip radial shaft seal measuring 10x18x4 mm. Manufactured from NBR nitrile rubber, it features a spring-loaded primary sealing lip and no additional dust lip. The compact type A design is suitable for industrial machinery, drive systems and small rotating mechanical assemblies.

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FAQ

What are the dimensions of the NBR 10x18x4 A oil seal?

The seal has a 10 mm shaft diameter, 18 mm housing bore diameter and 4 mm width.

What does type A mean?

Type A identifies a single-lip radial shaft seal with an elastomer-covered outside diameter.

Does the 10x18x4 A oil seal have a dust lip?

No. Type A is a single-lip design without an additional dust protection lip.

Does the sealing lip have a spring?

Yes. The primary sealing lip is supported by a garter spring.

What material is the seal made from?

The seal is manufactured from NBR - Nitrile Butadiene Rubber.

Is NBR suitable for oil applications?

NBR provides good resistance to many mineral oils and lubricating greases. Compatibility should be verified for the specific fluid and operating conditions.

What is the correct parent category?

The product belongs to Single-Lip Type A Radial Shaft Seals.