30x52x10 NBR AO/TC Double Lip Radial Shaft Oil Seal

30x52x10 NBR AO/TC Double Lip Radial Shaft Oil Seal

30x52x10 NBR AO/TC is a double lip radial shaft oil seal designed for a 30 mm shaft and 52 mm housing bore, with a seal width of 10 mm. Manufactured from NBR - Nitrile Butadiene Rubber, the AO/TC configuration combines a spring-loaded primary sealing lip with an additional dust lip on the external side of the seal.

Complete identification:

30x52x10 mm -> NBR -> AO/TC -> Double Lip

30x52x10 Oil Seal - Dimensions

d - Shaft diameter: 30 mm
D - Housing bore diameter: 52 mm
B - Width: 10 mm
Dimensions: 30x52x10 mm
Material: NBR - Nitrile Butadiene Rubber
Design: AO / TC
Configuration: Double lip

The designation 30x52x10 mm should be interpreted as:

30 mm - nominal shaft diameter
52 mm - nominal housing bore diameter
10 mm - seal width

All three installation dimensions should be verified when selecting a replacement.

AO/TC Double Lip Design

The AO/TC design uses two functional lips.

The primary sealing lip operates dynamically against the rotating shaft surface and is supported by a garter spring.

The additional dust lip is positioned toward the external side of the seal and provides an additional barrier against dust and external contamination.

This double lip configuration distinguishes AO/TC from basic single lip radial shaft seal designs.

Spring-Loaded Primary Sealing Lip

The primary dynamic sealing lip operates directly against the shaft counterface.

A garter spring supports the elastomeric sealing edge and helps maintain radial contact between the lip and the rotating shaft.

The principal dynamic sealing interface therefore consists of:

primary sealing lip + garter spring + shaft counterface

For this reason, shaft diameter, surface condition, alignment and installation quality are important factors in sealing performance.

Damage or excessive wear in the area where the sealing lip contacts the shaft can affect sealing even when the correct 30x52x10 seal is installed.

Additional Dust Lip

The second lip in the AO/TC configuration acts as an additional dust lip.

Its purpose is to help limit the entry of external contaminants into the area of the primary sealing lip.

This is an important construction feature when comparing double lip and single lip shaft seals with identical installation dimensions.

A 30x52x10 single lip seal should therefore not automatically be considered equivalent to this 30x52x10 AO/TC version.

NBR - Nitrile Butadiene Rubber

The seal is manufactured from NBR - Nitrile Butadiene Rubber, also commonly referred to as nitrile rubber.

NBR is widely used for radial shaft oil seals and other industrial sealing components. It is commonly compatible with many mineral oils, lubricating greases and industrial lubricants.

Actual compatibility should always be verified against the specific medium, additives, temperature and operating conditions.

The NBR designation alone does not establish compatibility with every oil, fuel or chemical.

AO and TC Designations

AO and TC are designations encountered for double lip radial shaft oil seal configurations.

Terminology and design codes can differ between seal manufacturers. For this reason, replacement selection should not rely exclusively on the letters AO or TC.

The important characteristics of this product are:

30x52x10 mm + NBR + double lip design + spring-loaded primary sealing lip + additional dust lip

When cross-referencing another manufacturer's seal, its actual construction should be compared rather than assuming interchangeability from a similar type designation.

How Does a 30x52x10 Radial Shaft Oil Seal Work?

The primary sealing lip maintains dynamic contact with the rotating shaft surface.

Its sealing edge creates the principal interface responsible for controlling lubricant migration along the shaft.

The additional dust lip operates on the external side and helps protect the primary sealing area against contamination.

Correct operation depends on the complete sealing system, including the shaft counterface, housing bore, installation, lubricant, temperature, rotational conditions and alignment.

Typical Applications

Double lip NBR radial shaft oil seals are widely used in rotating mechanical assemblies such as:

gearboxes, electric motors, pumps, reducers, industrial machinery and other shaft-bearing housings.

However, the 30x52x10 dimensions alone do not confirm suitability for a specific machine or assembly.

Before installation, verify the required dimensions, seal design, elastomer material, operating medium and actual operating conditions.

Selecting a 30x52x10 Replacement Oil Seal

A seal with the same 30x52x10 mm dimensions is not automatically a complete technical equivalent.

For replacement selection, verify:

Shaft diameter: 30 mm
Housing bore diameter: 52 mm
Width: 10 mm
Material: NBR
Design: AO/TC
Configuration: Double lip
Primary sealing lip: Spring-loaded
Additional dust lip: Yes

A single lip 30x52x10 seal has a different lip configuration.

Similarly, a 30x52x10 FKM/FPM seal may have identical installation dimensions but different material properties.

Technical Specification

Product: Radial shaft oil seal
Dimensions: 30x52x10 mm
d - Shaft diameter: 30 mm
D - Housing bore diameter: 52 mm
B - Width: 10 mm
Material: NBR
Material name: Nitrile Butadiene Rubber
Design: AO / TC
Configuration: Double lip
Primary sealing lip: Yes
Primary lip garter spring: Yes
Additional dust lip: Yes

FAQ

What does 30x52x10 mean on an oil seal?

It specifies the principal installation dimensions: 30 mm shaft diameter, 52 mm housing bore diameter and 10 mm seal width.

Is the 30x52x10 AO/TC oil seal double lip?

Yes. The AO/TC configuration has a primary sealing lip and an additional dust lip.

Does the primary sealing lip have a spring?

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

What is the purpose of the additional dust lip?

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

What material is the 30x52x10 AO/TC seal made from?

This version is manufactured from NBR - Nitrile Butadiene Rubber.

Can a 30x52x10 single lip seal replace this AO/TC seal?

Not automatically. Although the installation dimensions may be identical, the lip configuration is different. The required seal design should be verified for the application.

Can a 30x52x10 FKM seal replace the NBR version?

Not automatically. NBR and FKM/FPM have different material properties and chemical compatibility. Material selection should correspond to the operating medium, temperature and application requirements.

Are AO and TC identical for every manufacturer?

Not necessarily. Manufacturer designation systems can differ. Compare the actual lip configuration, material and dimensions rather than relying only on the type code.

AI Overview

30x52x10 NBR AO/TC is a double lip radial shaft oil seal designed for a 30 mm shaft and 52 mm housing bore, with a width of 10 mm. Manufactured from Nitrile Butadiene Rubber, it features a spring-loaded primary sealing lip and an additional dust lip that helps protect the primary sealing area from external contamination.