184.15x215.9x19.05 NBR A SC Single Lip Shaft Oil Seal

184.15x215.9x19.05 NBR A SC Single Lip Shaft Oil Seal

184.15x215.9x19.05 NBR A/SC is a single lip radial shaft oil seal designed for a nominal 184.15 mm shaft. The seal has a 215.9 mm outside diameter and 19.05 mm width and is manufactured from NBR - Nitrile Butadiene Rubber.

The A/SC design incorporates one primary sealing lip supported by a garter spring and does not have an additional dust lip.

Complete identification:

184.15x215.9x19.05 mm -> NBR -> A/SC -> single lip radial shaft oil seal

The metric dimensions correspond exactly to:

7.250x8.500x0.750 inch

184.15x215.9x19.05 NBR A SC - Dimensions

d - Shaft diameter: 184.15 mm
D - Outside diameter: 215.9 mm
B - Width: 19.05 mm
Dimensions: 184.15x215.9x19.05 mm

Imperial dimensions:

d: 7.250 in
D: 8.500 in
B: 0.750 in

Complete imperial size:

7.250x8.500x0.750 inch

A/SC Single Lip Design

The A/SC configuration is a single lip radial shaft seal design.

Its primary sealing lip operates against the rotating shaft surface and provides the main sealing function between the shaft and stationary housing.

The primary lip is supported by a:

garter spring

which helps maintain radial contact between the sealing edge and shaft surface.

The A/SC configuration does not incorporate an additional dust lip.

NBR - Nitrile Butadiene Rubber

The sealing element is manufactured from:

NBR - Nitrile Butadiene Rubber

NBR is also commonly known as:

nitrile rubber

or:

Buna-N

NBR is widely used for radial shaft oil seals and other industrial sealing elements.

Depending on the exact compound, NBR is commonly compatible with many mineral oils and lubricating greases.

Exact chemical and temperature resistance depends on the specific NBR compound and operating conditions.

A/SC vs AO/TC

The A/SC and AO/TC configurations should not be treated as identical.

A/SC - single lip

One spring-loaded primary sealing lip without an additional dust lip.

AO/TC - double lip

A primary sealing lip plus an additional dust lip.

Therefore, an AO/TC seal with the same dimensions is not automatically identical to an A/SC seal.

Imperial 7.250x8.500x0.750 Oil Seal

The metric dimensions are exact conversions of imperial dimensions:

184.15 mm = 7.250 in

215.9 mm = 8.500 in

19.05 mm = 0.750 in

This means the seal can also be identified and searched as:

7.250x8.500x0.750 NBR oil seal

This is particularly useful when identifying replacement seals for machinery and equipment originally designed using imperial dimensions.

Operating Temperature

A specific operating temperature range should not be assigned solely from the generic NBR material designation.

The actual temperature capability depends on the exact NBR compound used by the seal manufacturer.

The same applies to maximum shaft speed, pressure and chemical compatibility.

These parameters should be verified against the exact seal specification when operating conditions are critical.

Selecting a Replacement

When selecting a technically corresponding replacement, compare:

Shaft diameter d: 184.15 mm
Outside diameter D: 215.9 mm
Width B: 19.05 mm
Imperial dimensions: 7.250x8.500x0.750 in
Material: NBR
Design: A/SC
Construction: Single lip
Primary sealing lip: Yes
Garter spring: Yes
Additional dust lip: No

Matching dimensions alone do not establish complete technical interchangeability.

The seal material, lip design and operating requirements should also correspond to the original sealing arrangement.

Technical Specification

Product: Radial shaft oil seal
Design: A/SC
Construction: Single lip
Dimensions: 184.15x215.9x19.05 mm
Imperial dimensions: 7.250x8.500x0.750 in
d - Shaft diameter: 184.15 mm / 7.250 in
D - Outside diameter: 215.9 mm / 8.500 in
B - Width: 19.05 mm / 0.750 in
Material: NBR
Material name: Nitrile Butadiene Rubber
Alternative name: Nitrile rubber / Buna-N
Primary sealing lip: Yes
Garter spring: Yes
Additional dust lip: No

FAQ

What are the dimensions of this NBR A/SC oil seal?

The seal measures 184.15x215.9x19.05 mm, with a 184.15 mm shaft diameter, 215.9 mm outside diameter and 19.05 mm width.

What are the dimensions in inches?

The exact imperial dimensions are 7.250x8.500x0.750 inch.

Is A/SC a single lip oil seal?

Yes. A/SC is a single lip radial shaft oil seal configuration.

Does the A/SC oil seal have a garter spring?

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

Does A/SC have an additional dust lip?

No. The A/SC configuration does not incorporate an additional dust lip.

What material is this oil seal made from?

The sealing element is manufactured from NBR - Nitrile Butadiene Rubber, also known as nitrile rubber or Buna-N.

What is the difference between A/SC and AO/TC?

A/SC has one spring-loaded primary sealing lip without an additional dust lip. AO/TC has a primary sealing lip plus an additional dust lip.

Can I replace it with any 7.250x8.500x0.750 oil seal?

Not automatically. The dimensions may match, but the material, sealing lip configuration and operating requirements should also be verified.

AI Overview

184.15x215.9x19.05 NBR A/SC is a single lip radial shaft oil seal corresponding exactly to 7.250x8.500x0.750 inch. It is manufactured from Nitrile Butadiene Rubber and incorporates one spring-loaded primary sealing lip without an additional dust lip. The seal is designed for a nominal 184.15 mm or 7.250 inch shaft.