Rotary Shaft Seal 125x160x12 NBR TC - Double Lip Oil Seal

Rotary Shaft Seal 125x160x12 NBR TC - Double Lip Oil Seal

Rotary Shaft Seal 125x160x12 NBR TC is a double-lip radial shaft seal with dimensions 125x160x12 mm, manufactured from NBR (Nitrile Butadiene Rubber). The TC design features a spring-loaded primary sealing lip and an additional dust lip that helps protect the primary sealing area against dust, dirt and other external contaminants.

Technical data

What does 125x160x12 mm mean?

The designation 125x160x12 mm specifies the three basic installation dimensions of the rotary shaft seal:

125 mm - nominal shaft diameter.

160 mm - nominal housing bore diameter.

12 mm - nominal seal width.

When selecting a replacement, all three dimensions should be checked together with the elastomer material and sealing lip configuration.

TC - double-lip oil seal design

The TC profile is a double-lip rotary shaft seal design.

Its construction includes:

• primary sealing lip

• garter spring supporting the primary sealing lip

• additional dust lip

• rubber-covered outside diameter

• internal reinforcement

The primary sealing lip operates directly against the rotating shaft surface and provides the main dynamic sealing function.

The additional secondary lip acts as a dust lip, helping to reduce the ingress of dust, dirt and other external contaminants into the primary sealing area.

NBR - Nitrile Butadiene Rubber

The oil seal is manufactured from NBR (Nitrile Butadiene Rubber).

NBR is one of the most commonly used elastomers for conventional rotary shaft seals. It provides good resistance to many mineral oils and greases together with good mechanical and wear properties.

Material suitability should always be evaluated according to the specific medium, operating temperature, shaft surface speed and other operating conditions.

How does the 125x160x12 TC oil seal work?

The primary sealing lip operates directly against the rotating shaft surface. A garter spring helps maintain appropriate radial contact between the sealing lip and the shaft.

The additional dust lip forms a secondary barrier on the external side and helps protect the primary sealing area against contamination.

The rubber-covered outside diameter provides static sealing between the outer surface of the oil seal and the housing bore.

SC vs TC - what is the difference?

The main difference is the sealing lip configuration.

SC - single-lip rotary shaft seal with one spring-loaded primary sealing lip and no additional dust lip.

TC - double-lip rotary shaft seal with a spring-loaded primary sealing lip and an additional secondary dust lip.

SC and TC oil seals should therefore not automatically be considered interchangeable even when their nominal dimensions are identical.

Seal designation systems may vary between manufacturers, so the actual construction, dimensions and elastomer material should always be verified when selecting an equivalent.

Selecting a 125x160x12 TC oil seal

Before purchasing or selecting a replacement, verify:

• shaft diameter: 125 mm

• housing bore diameter: 160 mm

• seal width: 12 mm

• elastomer: NBR

• TC design

• double-lip construction

• sealed medium

• operating temperature

• shaft surface speed

• condition of the shaft sealing surface

• lubrication conditions

• required protection against external contamination

Matching the 125x160x12 mm dimensions alone does not guarantee full interchangeability.

Installation

Before installation, thoroughly clean the shaft and housing bore.

The shaft surface in contact with the primary sealing lip should be free from sharp edges, burrs, corrosion, scratches and other defects that could damage the sealing lip or reduce sealing performance.

During installation:

• protect the sealing lip from sharp edges

• prevent the lip from folding or twisting

• press the seal evenly into the housing

• avoid tilting the seal

• ensure the correct installation direction

The primary sealing lip should normally face the medium being retained.

FAQ - Rotary Shaft Seal 125x160x12 NBR TC

What are the dimensions of the 125x160x12 oil seal?

The nominal shaft diameter is 125 mm, the housing bore diameter is 160 mm, and the seal width is 12 mm. The complete dimensions are 125x160x12 mm.

What material is this oil seal made from?

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

Is TC a double-lip oil seal?

Yes. The TC design features a primary sealing lip and an additional secondary dust lip.

Does the TC oil seal have a garter spring?

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

What is the purpose of the second lip?

The additional dust lip helps reduce the ingress of dust, dirt and other external contaminants into the primary sealing area.

What is the difference between SC and TC oil seals?

SC is a single-lip design without an additional dust lip. TC is a double-lip design incorporating an additional secondary dust lip.

Is NBR suitable for oil?

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

Can any 125x160x12 oil seal be used as a replacement?

No. In addition to dimensions, the NBR material, TC profile, sealing lip arrangement and actual operating requirements should be verified.

Rotary Shaft Seal 125x160x12 NBR TC - key information

Rotary Shaft Seal 125x160x12 NBR TC is a double-lip oil seal for a 125 mm shaft and 160 mm housing bore, with a width of 12 mm. Manufactured from NBR, the TC design combines a spring-loaded primary sealing lip with an additional dust lip that helps protect the primary sealing area against external contamination.

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