Rotary Shaft Seal 105x150x15 NBR A/SC - Single Lip Oil Seal

Rotary Shaft Seal 105x150x15 NBR A/SC - Single Lip Oil Seal

Rotary Shaft Seal 105x150x15 NBR A/SC is a single-lip radial shaft seal with dimensions 105x150x15 mm, manufactured from NBR (Nitrile Butadiene Rubber). The A/SC design features a primary spring-loaded sealing lip and does not incorporate the additional dust lip found in AO/TC double-lip designs. It is designed for sealing rotating shafts where a conventional single-lip configuration is required.

Technical data

What does 105x150x15 mm mean?

The dimensions specify the basic installation size of the rotary shaft seal:

105 mm - nominal shaft diameter.

150 mm - nominal housing bore diameter.

15 mm - axial width of the seal.

All three dimensions should be verified when selecting a replacement. Dimensions alone, however, are not sufficient - the seal material and lip design must also match the requirements of the application.

What does A/SC mean?

A and SC are designations used in rotary shaft seal nomenclature for single-lip designs.

This construction typically incorporates:

• primary sealing lip

• garter spring supporting the sealing lip

• elastomer-covered outside diameter

• internal metal reinforcement

Unlike the AO/TC design, the A/SC configuration does not have an additional dust lip.

Designation systems can vary between manufacturers. Therefore, when selecting an equivalent seal, the actual construction, dimensions and material should be compared rather than relying solely on the A or SC designation.

NBR material

NBR (Nitrile Butadiene Rubber) is one of the most commonly used elastomers for rotary shaft seals and oil seals.

NBR offers good resistance to many mineral oils and greases as well as good wear resistance. These characteristics make it widely used in conventional industrial shaft sealing applications.

Material selection should always take into account the actual medium, operating temperature, shaft surface speed and other operating conditions.

Single-lip A/SC design

In the 105x150x15 NBR A/SC oil seal, the sealing function is performed by the primary lip running against the surface of the rotating shaft.

A garter spring maintains appropriate contact pressure between the sealing lip and shaft surface, helping the seal retain lubricant or another compatible medium within the system.

The A/SC design does not incorporate an additional dust lip. This difference should be considered where the sealing arrangement is exposed to significant external dust, dirt or other contamination.

A/SC vs AO/TC - what is the difference?

The primary difference is the lip configuration.

A/SC - single-lip design with a spring-loaded primary sealing lip.

AO/TC - double-lip design with a spring-loaded primary sealing lip and an additional dust lip.

Therefore, two rotary shaft seals with identical dimensions should not automatically be considered technically equivalent when one uses an A/SC design and the other an AO/TC design.

Selecting a 105x150x15 oil seal

Before purchasing or selecting a replacement, verify:

• 105 mm shaft diameter

• 150 mm housing bore diameter

• 15 mm width

• NBR material

• A/SC single-lip design

• sealed medium

• operating temperature

• shaft surface speed

• shaft sealing surface condition

• lubrication conditions

• contamination protection requirements

Matching 105x150x15 mm dimensions alone does not guarantee full interchangeability.

Installation

Before installation, thoroughly clean the shaft and housing bore. The shaft surface that contacts the sealing lip should be free from sharp edges, burrs, corrosion and damage that could cut or prematurely wear the elastomer.

The sealing lip should be protected against folding or cutting during installation. The seal should be pressed evenly into the housing without tilting.

The primary sealing lip must be installed in the correct orientation relative to the medium being retained.

FAQ - Rotary Shaft Seal 105x150x15 NBR A/SC

What are the dimensions of this oil seal?

The seal has a nominal shaft diameter of 105 mm, housing bore diameter of 150 mm and width of 15 mm. Its complete dimensions are 105x150x15 mm.

What material is the seal made from?

The sealing element is manufactured from NBR (Nitrile Butadiene Rubber).

Is A/SC a single-lip oil seal?

Yes. The A/SC design is a single-lip rotary shaft seal with a primary sealing lip.

Does the A/SC design have a garter spring?

Yes. The primary sealing lip is supported by a garter spring that maintains contact with the rotating shaft.

Does A/SC have an additional dust lip?

No. Unlike the AO/TC double-lip design, A/SC does not incorporate an additional dust lip.

Is NBR resistant to oil?

NBR provides good resistance to many mineral oils and greases. Compatibility should always be verified for the specific medium, temperature and operating conditions.

Can A/SC be replaced by AO/TC?

Not automatically. AO/TC incorporates an additional dust lip, whereas A/SC is a single-lip design. The required configuration should be selected according to the specific sealing arrangement and operating environment.

Rotary Shaft Seal 105x150x15 NBR A/SC - key information

Rotary Shaft Seal 105x150x15 NBR A/SC is a single-lip oil seal with dimensions 105x150x15 mm, manufactured from NBR. The A/SC design incorporates a spring-loaded primary sealing lip without an additional dust lip. Correct selection requires verification of the dimensions, elastomer material, lip configuration and operating conditions.

Available from simmering.pl, a specialist supplier of rotary shaft seals, industrial sealing solutions and bearings. Stock in Poland with worldwide shipping.