Rotary Shaft Seal 110x150x12 NBR AO/TC - Double Lip Oil Seal

Rotary Shaft Seal 110x150x12 NBR AO/TC - Double Lip Oil Seal

Rotary Shaft Seal 110x150x12 NBR AO/TC is a double-lip radial shaft seal with dimensions 110x150x12 mm, manufactured from NBR (Nitrile Butadiene Rubber). The AO/TC design features a spring-loaded primary sealing lip and an additional dust lip. The primary lip seals against the rotating shaft, while the secondary lip helps protect the sealing area against dust, dirt and other external contamination.

Technical data

What does 110x150x12 mm mean?

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

110 mm - nominal shaft diameter.

150 mm - nominal housing bore diameter.

12 mm - axial width of the seal.

All three dimensions must be verified when selecting a replacement. The elastomer material and sealing lip configuration should also correspond to the requirements of the application.

What does AO/TC mean?

AO and TC are designations used for double-lip rotary shaft seal designs.

This type of construction typically includes:

• primary sealing lip

• garter spring supporting the primary sealing lip

• additional dust lip

• elastomer-covered outside diameter

• internal metal reinforcement

The additional dust lip is the key difference compared with single-lip A/SC designs.

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

NBR material

NBR (Nitrile Butadiene Rubber) is one of the most widely 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 properties make it suitable for a wide range of conventional industrial shaft sealing applications.

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

Double-lip AO/TC design

In the 110x150x12 NBR AO/TC oil seal, the primary sealing lip operates directly against the rotating shaft. A garter spring maintains the required contact between the sealing lip and shaft surface.

The secondary lip functions as a dust lip. It helps reduce the ingress of dust, dirt and other external contaminants into the primary sealing area.

The double-lip design is particularly useful where the sealing system requires both retention of the medium and additional protection of the primary sealing lip from external contamination.

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

The main difference is the lip configuration.

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

A/SC - single-lip design with a spring-loaded primary sealing lip and no additional dust lip.

Even when two seals have identical dimensions, AO/TC and A/SC versions should not automatically be considered technically identical.

Selecting a 110x150x12 oil seal

Before purchasing or selecting a replacement, verify:

• 110 mm shaft diameter

• 150 mm housing bore diameter

• 12 mm width

• NBR material

• AO/TC double-lip design

• sealed medium

• operating temperature

• shaft surface speed

• shaft sealing surface condition

• lubrication conditions

• required protection against external contamination

Matching 110x150x12 mm dimensions alone does not guarantee full interchangeability.

Installation

Before installation, thoroughly clean the shaft and housing bore. The shaft surface that contacts the primary sealing lip should be free from sharp edges, burrs 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 110x150x12 NBR AO/TC

What are the dimensions of this oil seal?

The seal has a nominal shaft diameter of 110 mm, housing bore diameter of 150 mm and width of 12 mm. Its complete dimensions are 110x150x12 mm.

What material is the seal made from?

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

Is AO/TC a double-lip oil seal?

Yes. The AO/TC design incorporates a primary sealing lip and an additional dust lip.

Does the AO/TC design have a garter spring?

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

What is the purpose of the second lip?

The additional dust lip helps prevent dust, dirt and other external contaminants from reaching the primary sealing area.

Is NBR resistant to oil?

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

Can AO/TC be replaced by A/SC?

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 operating environment and sealing requirements.

Rotary Shaft Seal 110x150x12 NBR AO/TC - key information

Rotary Shaft Seal 110x150x12 NBR AO/TC is a double-lip oil seal with dimensions 110x150x12 mm, manufactured from NBR. The AO/TC design combines a spring-loaded primary sealing lip with an additional dust lip that helps protect the sealing area against external contamination. Correct selection requires verification of dimensions, material, seal design and actual operating conditions.

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