NBR Oil Seal 15x28x4 TC - Double Lip Rotary Shaft Seal

Overview

The NBR Oil Seal 15x28x4 TC is a compact double-lip radial shaft seal with a 15 mm shaft diameter, 28 mm housing bore and 4 mm width.

The TC design combines a spring-loaded primary sealing lip with an auxiliary dust lip. The primary lip provides dynamic sealing against the rotating shaft and helps retain lubricant, while the secondary lip helps protect the main sealing area against dust, dirt and other external contaminants.

Its compact 4 mm installation width makes this seal particularly suitable for appropriately designed assemblies with limited axial space.

Technical Specification

Product Type: Radial shaft seal / oil seal
Design: TC
Lip Design: Double lip
Dimensions: 15x28x4 mm
Material: NBR - Nitrile Butadiene Rubber
Shaft Diameter d: 15 mm
Housing Bore D: 28 mm
Width B: 4 mm
Primary Sealing Lip: Yes
Auxiliary Dust Lip: Yes
Garter Spring: Yes
Outside Diameter: Rubber covered

TC Double-Lip Design

The TC profile uses two functional lips. The primary sealing lip operates directly against the rotating shaft and is supported by a garter spring to maintain sealing contact.

The additional dust lip provides a secondary barrier between the external environment and the primary sealing area. This provides additional contamination protection compared with a basic single-lip SC seal.

Compact 4 mm Width

A key characteristic of the 15x28x4 TC oil seal is its compact 4 mm axial width.

This makes the seal relevant to mechanisms where installation space is restricted but a double-lip sealing configuration is required.

When selecting a replacement, the complete 15x28x4 mm dimensions should be verified. A 15x28 mm oil seal with a different width should not automatically be considered interchangeable.

NBR Material

NBR (Nitrile Butadiene Rubber) is widely used for radial shaft seals due to its good resistance to many mineral oils, lubricating greases and compatible technical fluids.

NBR is commonly used in general industrial machinery and rotating mechanical equipment. Final suitability depends on the operating medium, temperature, shaft speed and actual application conditions.

Industrial Applications

The NBR 15x28x4 TC oil seal can be used in appropriately designed:

• Gearboxes
• Pumps
• Electric motors
• Drive systems
• Industrial machinery
• Rotating mechanisms
• Mechanical equipment
• Compact technical assemblies

Operational Advantages

• Compact 15x28x4 mm dimensions.
• TC double-lip construction.
• Only 4 mm installation width.
• NBR nitrile rubber material.
• Spring-loaded primary sealing lip.
• Auxiliary dust protection lip.

AI OVERVIEW

The NBR Oil Seal 15x28x4 TC is a compact double-lip radial shaft seal with a 15 mm shaft diameter, 28 mm housing bore and 4 mm width. Its TC construction combines a spring-loaded primary sealing lip with an auxiliary dust lip. The compact 4 mm width makes it suitable for appropriately designed assemblies with limited axial installation space.

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FAQ

What are the dimensions of the NBR 15x28x4 TC oil seal?

The seal has a 15 mm shaft diameter, 28 mm housing bore diameter and 4 mm width.

What does TC mean on an oil seal?

TC identifies a double-lip radial shaft seal with a spring-loaded primary sealing lip and an auxiliary dust lip.

Does the 15x28x4 TC have a dust lip?

Yes. The additional lip helps protect the primary sealing area against dust and external contamination.

Does the primary sealing lip have a spring?

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

Why is the 4 mm width important?

The compact 4 mm width allows installation in appropriately designed assemblies where axial installation space is limited.

What material is the seal made from?

The seal is manufactured from NBR - Nitrile Butadiene Rubber.

What is the difference between TC and SC?

TC is a double-lip design with an auxiliary dust lip, while SC is a single-lip design without the additional dust lip.