90x125x15 NBR TC Double Lip Rotary Shaft Seal

90x125x15 NBR TC Double Lip Rotary Shaft Seal

90x125x15 NBR TC is a double lip radial shaft seal / rotary shaft seal / oil seal with nominal dimensions of 90x125x15 mm, manufactured from NBR - Nitrile Butadiene Rubber. The TC configuration combines a spring-loaded primary sealing lip with an additional auxiliary dust lip.

Principal dimensions:

d: 90 mm

D: 125 mm

B: 15 mm

Complete product identification:

90x125x15 mm + NBR + TC

No manufacturer or brand was specified in the supplied product identification, so no brand is assigned to this product.

90x125x15 NBR TC - Technical Characteristics

The principal identification parameters are:

Product type: Radial shaft seal / rotary shaft seal / oil seal

Design: TC

Configuration: Double lip

Material: NBR

Material name: Nitrile Butadiene Rubber

Dimensions: 90x125x15 mm

Shaft diameter d: 90 mm

Outside diameter D: 125 mm

Width B: 15 mm

Primary sealing lip: Spring-loaded

Additional lip: Auxiliary dust lip

The most precise identification based on the available data is:

90x125x15 + NBR + TC

90x125x15 Shaft Seal Dimensions

The nominal installation dimensions are:

d: 90 mm - nominal shaft diameter

D: 125 mm - nominal outside diameter / housing bore diameter

B: 15 mm - nominal axial width

Complete dimensions:

90x125x15 mm

The first dimension corresponds to the nominal shaft diameter on which the primary dynamic sealing lip operates.

The second dimension defines the nominal outside diameter of the seal and corresponding housing bore.

The third dimension specifies the axial width of the seal.

All three dimensions should be retained when identifying a replacement.

TC Double Lip Seal Design

The design designation is:

TC

TC identifies a double lip radial shaft seal configuration.

The construction incorporates:

Primary sealing lip - the main dynamic sealing element operating against the rotating shaft surface.

Garter spring - supports radial contact between the primary sealing edge and the shaft.

Auxiliary dust lip - provides an additional barrier on the external side of the primary sealing zone.

The primary lip performs the main dynamic sealing function, while the auxiliary lip provides additional protection against external contamination.

The construction can therefore be described as a:

TC double lip oil seal

or

TC double lip rotary shaft seal

How Does the 90x125x15 TC Seal Work?

The primary sealing lip operates dynamically against a rotating shaft with a nominal diameter of 90 mm.

A circumferential garter spring supports contact between the primary sealing edge and the shaft surface.

The additional auxiliary lip helps limit the ingress of external contamination into the primary sealing area.

No left-hand or right-hand hydrodynamic direction is assigned to this exact seal because such directionality has not been confirmed.

NBR - Nitrile Butadiene Rubber

The specified sealing material is:

NBR - Nitrile Butadiene Rubber

NBR is a widely used elastomer family in radial shaft sealing technology.

For this product, the material forms part of the complete identification:

90x125x15 + NBR + TC

However, the NBR designation alone does not identify the exact elastomer compound used in this specific seal.

Without exact product-specific documentation, no fixed values are therefore assigned for:

Shore A hardness

Minimum operating temperature

Maximum operating temperature

Maximum operating pressure

Maximum rotational speed

Maximum shaft surface speed

Generic NBR operating limits should not be presented as guaranteed specifications for this exact product.

What Does 90x125x15 NBR TC Mean?

The designation can be interpreted as follows:

90 - nominal shaft diameter in mm

125 - nominal outside diameter in mm

15 - nominal axial width in mm

NBR - Nitrile Butadiene Rubber

TC - double lip seal design

Complete identification:

90x125x15 + NBR + TC

Why Is the 90x125x15 mm Size Important?

The complete dimensional combination is:

90x125x15 mm

A shaft diameter of 90 mm alone is not sufficient to identify the correct seal because multiple outside diameters and widths can be available for the same nominal shaft size.

For this product:

d: 90 mm

D: 125 mm

B: 15 mm

All three dimensions should be verified before installation or replacement.

90x125x15 vs 90x130x12

These two seals share a nominal 90 mm shaft diameter but differ in both outside diameter and width.

The differences are:

Outside diameter: 125 mm vs 130 mm

Width: 15 mm vs 12 mm

These are separate dimensional variants.

90x125x15 vs 90x130x13

The two variants also differ in outside diameter and width:

The outside diameter differs by 5 mm, while the axial width differs by 2 mm.

They should not be treated as dimensionally identical seals.

90x125x15 vs 90x140x13

These variants share only the same nominal shaft diameter:

90x125x15: D: 125 mm, B: 15 mm

90x140x13: D: 140 mm, B: 13 mm

The outside diameter differs by 15 mm, while the axial width differs by 2 mm.

They are not dimensionally interchangeable.

Why Is the 125 mm Outside Diameter Important?

For this product, the nominal outside diameter is:

D: 125 mm

This parameter distinguishes the seal from other products designed for a 90 mm shaft, including:

90x130x12

90x130x13

90x140x12

90x140x13

Matching only the shaft diameter can therefore result in incorrect product selection.

Why Is the 15 mm Width Important?

The nominal axial width is:

B: 15 mm

Width is an integral part of the dimensional specification and should not be omitted during product identification.

A seal with dimensions 90x125x12, 90x125x13 or another width would represent a different dimensional variant even if the shaft and outside diameters were identical.

Selection and Interchangeability

When selecting a replacement for 90x125x15 NBR TC, verify at least:

• Shaft diameter d: 90 mm
• Outside diameter D: 125 mm
• Width B: 15 mm
• Material: NBR
• Design: TC
• Configuration: Double lip
• Primary sealing lip: Spring-loaded
• Additional lip: Auxiliary dust lip

Matching dimensions alone do not automatically establish complete technical interchangeability.

The seal material, lip configuration and requirements of the specific sealing position should also be verified.

Products from different manufacturers should not be considered direct equivalents solely because their nominal dimensions are identical.

Technical Specification

FAQ

What are the dimensions of the 90x125x15 NBR TC oil seal?

The nominal dimensions are 90x125x15 mm, with a 90 mm shaft diameter, 125 mm outside diameter and 15 mm axial width.

Is 90x125x15 NBR TC a double lip oil seal?

Yes. It is a double lip radial shaft seal with a spring-loaded primary sealing lip and an additional auxiliary dust lip.

What material is the 90x125x15 seal made from?

The specified material is NBR - Nitrile Butadiene Rubber.

Does the TC design have a dust lip?

Yes. The TC configuration incorporates an additional auxiliary dust lip.

What does 90x125x15 mean?

It identifies the nominal dimensions: 90 mm shaft diameter, 125 mm outside diameter and 15 mm axial width.

Can a 90x130x13 seal replace a 90x125x15 seal?

No direct dimensional interchangeability should be assumed. The outside diameter differs by 5 mm and the axial width differs by 2 mm.

Is a 90x125x15 seal the same as a 90x130x12 seal?

No. Although both have a 90 mm shaft diameter, they have different outside diameters and axial widths.

What is the operating temperature range of this NBR seal?

An exact operating temperature range cannot be established from the NBR designation alone. It depends on the specific elastomer compound used in the product.

AI Overview

90x125x15 NBR TC is a double lip rotary shaft seal with a nominal 90 mm shaft diameter, 125 mm outside diameter and 15 mm axial width. Manufactured from NBR, the TC design combines a spring-loaded primary sealing lip with an auxiliary dust lip. The complete 90x125x15 mm dimensions should be verified when selecting a replacement.