GRN® 90x140x13 NBR TC Double Lip Rotary Shaft Seal

GRN® 90x140x13 NBR TC Double Lip Rotary Shaft Seal

GRN® 90x140x13 NBR TC is a double lip radial shaft seal / rotary shaft seal / oil seal with nominal dimensions of 90x140x13 mm, manufactured from NBR - Nitrile Butadiene Rubber. The TC configuration combines a spring-loaded primary sealing lip with an additional auxiliary dust lip.

The principal dimensions are d: 90 mm, D: 140 mm and B: 13 mm.

Complete product identification:

GRN® + 90x140x13 mm + NBR + TC

The complete dimensions should be retained during identification because other seals for a 90 mm shaft may have substantially different outside diameters and axial widths.

GRN® 90x140x13 NBR TC - Technical Characteristics

The principal identification parameters are:

Brand: GRN®

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

Design: TC

Configuration: Double lip

Material: NBR

Material name: Nitrile Butadiene Rubber

Dimensions: 90x140x13 mm

Shaft diameter d: 90 mm

Outside diameter D: 140 mm

Width B: 13 mm

Primary sealing lip: Spring-loaded

Additional lip: Auxiliary dust lip

For precise technical identification, retain:

GRN® + 90x140x13 + NBR + TC

GRN® 90x140x13 Dimensions

The nominal installation dimensions are:

d: 90 mm - nominal shaft diameter

D: 140 mm - nominal outside diameter / housing bore diameter

B: 13 mm - nominal axial width

Complete dimensions:

90x140x13 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.

All three values should be checked when identifying or selecting a replacement.

TC Double Lip Seal Design

The English design designation for this GRN® product 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 - an additional lip positioned toward the external side of the sealing arrangement.

The primary lip performs the principal dynamic sealing function, while the auxiliary lip provides an additional barrier against external contamination.

This construction is commonly described as a:

TC double lip oil seal

or

TC double lip rotary shaft seal

How Does the GRN® TC Oil Seal Work?

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

A circumferential garter spring supports the contact of the primary sealing edge with the shaft.

The auxiliary lip is positioned on the external side of the primary sealing zone and provides an additional contamination barrier.

The TC configuration therefore combines the primary dynamic shaft sealing function with additional protection of the sealing zone.

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

NBR - Nitrile Butadiene Rubber

The specified 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 exact identification:

90x140x13 + NBR + TC

However, NBR alone does not identify the exact elastomer compound used for this specific GRN® seal.

Therefore, without exact product-specific documentation, no fixed values are 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 90x140x13 NBR TC Mean?

The designation can be interpreted as follows:

90 - nominal shaft diameter in mm

140 - nominal outside diameter in mm

13 - nominal axial width in mm

NBR - Nitrile Butadiene Rubber

TC - double lip seal design

GRN® - product brand

Complete identification:

GRN® + 90x140x13 + NBR + TC

For the English product page, TC is the correct design designation.

90 mm Shaft Diameter

The nominal shaft diameter is:

d: 90 mm

This dimension defines the nominal rotating shaft surface on which the primary sealing lip operates.

A shaft seal with a different inside diameter is not dimensionally identical, even if the outside diameter or width is similar.

140 mm Outside Diameter

The nominal outside diameter is:

D: 140 mm

This is a critical identification parameter.

Shaft seals designed for a 90 mm shaft may have substantially different outside diameters.

For this exact variant, the required nominal outside diameter is 140 mm.

This dimension clearly separates the product from the previously described GRN® 90x160x13 NBR TC.

GRN® 90x140x13 vs GRN® 90x160x13

These two GRN® variants share the same shaft diameter and axial width but have significantly different outside diameters.

The critical difference is:

D: 140 mm vs D: 160 mm

The outside diameter difference is 20 mm.

These products are therefore not dimensionally interchangeable.

GRN® 90x140x13 vs 90x140x12

A 90x140x12 seal shares the same shaft and outside diameters but differs in axial width.

The width difference is 1 mm.

Direct interchangeability should not be assumed without checking the installation requirements and complete seal specification.

Why Is the 140 mm Outside Diameter Important?

When searching for a shaft seal, the shaft diameter is often the first parameter considered.

However, d: 90 mm alone is not sufficient to identify this product.

For this GRN® variant:

d: 90 mm

D: 140 mm

B: 13 mm

A 90x160x13 seal has the same shaft diameter and width but requires a housing bore with a substantially different nominal diameter.

The complete 90x140x13 mm specification must therefore be retained.

Selection and Interchangeability

When selecting a replacement for GRN® 90x140x13 NBR TC, verify at least:

• Shaft diameter d: 90 mm
• Outside diameter D: 140 mm
• Width B: 13 mm
• Material: NBR
• Design: TC
• Configuration: Double lip
• Primary sealing lip: Spring-loaded
• Additional lip: Auxiliary dust lip

Matching only one or two dimensions is not sufficient.

In particular, 90x160x13 is not dimensionally equivalent because its outside diameter is 20 mm larger.

Likewise, a 90x140 seal with a different width, material or sealing design should not automatically be considered interchangeable.

Technical Specification

FAQ

What are the dimensions of GRN® 90x140x13 NBR TC?

The nominal dimensions are 90x140x13 mm, with a 90 mm shaft diameter, 140 mm outside diameter and 13 mm axial width.

Is GRN® 90x140x13 TC a double lip oil seal?

Yes. The TC design is a double lip radial shaft seal configuration with a primary sealing lip and an auxiliary dust lip.

What material is GRN® 90x140x13 TC made from?

The specified material is NBR - Nitrile Butadiene Rubber.

Does the TC seal have a spring-loaded sealing lip?

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

Does GRN® 90x140x13 TC have a dust lip?

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

Can GRN® 90x160x13 TC replace 90x140x13 TC?

No. Although both have a 90 mm shaft diameter and 13 mm width, their outside diameters are 160 mm and 140 mm, a difference of 20 mm.

Can a 90x140x12 seal replace 90x140x13?

Direct interchangeability should not be assumed. The axial widths differ by 1 mm, and the material and sealing design must also be verified.

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 by the manufacturer.

AI Overview

GRN® 90x140x13 NBR TC is a double lip rotary shaft seal with a nominal 90 mm shaft diameter, 140 mm outside diameter and 13 mm axial width. Manufactured from NBR, the TC design combines a spring-loaded primary sealing lip with an auxiliary dust lip. It should not be confused with the larger 90x160x13 mm variant.