GRN® 90x115x13 NBR TC Double Lip Rotary Shaft Seal

GRN® 90x115x13 NBR TC Double Lip Rotary Shaft Seal

GRN® 90x115x13 NBR TC is a double lip rotary shaft seal with nominal dimensions 90x115x13 mm. The TC design combines a spring-loaded primary sealing lip with an auxiliary dust lip. The elastomeric sealing element is manufactured from NBR – Nitrile Butadiene Rubber.

The key product identification is:

GRN® + 90x115x13 + NBR + TC + double lip

GRN® 90x115x13 NBR TC – Technical Characteristics

The principal identification parameters are:

The dimensions 90x115x13 mm alone do not completely identify this seal. The NBR material and TC double-lip design are also essential selection characteristics.

GRN® 90x115x13 Shaft Seal Dimensions

The three principal dimensions are:

d: 90 mm – nominal shaft diameter

D: 115 mm – nominal seal outside diameter / housing bore diameter

B: 13 mm – nominal axial width

Complete nominal size:

90x115x13 mm

For correct replacement selection, all three dimensions should be checked together with the material and sealing-lip configuration.

A seal with the same 90x115x13 mm dimensions but a different lip design or elastomer should not automatically be considered technically equivalent.

TC Double Lip Seal Design

The defining feature of this GRN® variant is its TC double-lip construction.

The seal incorporates:

a primary sealing lip

supported by:

a garter spring

and:

an auxiliary dust lip

The spring-loaded primary lip operates against the rotating shaft and forms the principal dynamic sealing interface.

The auxiliary lip is positioned toward the external side of the sealing arrangement and provides an additional barrier against contaminants approaching the primary sealing area.

This double-lip construction is the key feature distinguishing TC from a corresponding single-lip SC design.

What Does TC Mean on a Rotary Shaft Seal?

For this GRN® product, TC identifies a double-lip rotary shaft seal design incorporating a spring-loaded primary sealing lip and an additional dust lip.

In the Polish product nomenclature, this construction may be described as:

AO

or:

AO/TC

For the English GRN® product catalogue, the designation used is:

TC

Therefore, this product should be identified in English as:

GRN® 90x115x13 NBR TC

rather than using the Polish AO designation.

Seal profile nomenclature can vary between manufacturers. A similar-looking profile from another manufacturer should not be considered automatically identical solely because it performs a similar function.

How Does the GRN® 90x115x13 TC Seal Work?

The rotary shaft seal operates between a rotating shaft and a stationary housing.

The primary sealing lip contacts the shaft surface. The garter spring assists in maintaining contact between the sealing edge and the rotating shaft.

The outside diameter of the seal is retained in the housing bore.

The auxiliary dust lip creates an additional protective barrier on the external side of the primary sealing lip.

The seal is a sealing component and is not intended to support the shaft or replace a bearing.

NBR – Nitrile Butadiene Rubber

The elastomeric component of this seal is manufactured from:

NBR – Nitrile Butadiene Rubber

NBR is a family of elastomer materials widely used in sealing technology.

However, the generic designation NBR does not identify the exact GRN® compound formulation.

For this reason, an exact:

Shore A hardness

operating temperature range

maximum shaft surface speed

maximum pressure

or detailed chemical compatibility range should not be assigned to this specific seal without documentation for the exact GRN® compound.

Material compatibility should always be checked against the actual operating medium and conditions.

GRN® 90x115x13 NBR TC vs SC

A separate 90x115x13 NBR single-lip variant exists in the same nominal dimensions.

The principal distinction is the sealing-lip configuration:

These variants should remain separate product pages.

The TC page should primarily target searches for:

90x115x13 NBR double lip shaft seal

while the SC page should target:

90x115x13 NBR single lip shaft seal

This distinction improves technical product identification while reducing SEO cannibalization between products with identical basic dimensions.

TC vs Other Manufacturer Seal Profiles

Other manufacturers may offer rotary shaft seals with the same nominal 90x115x13 mm dimensions and an auxiliary dust lip.

This does not automatically establish interchangeability.

Seal-profile terminology is manufacturer-dependent, and two seals sharing the same dimensions can differ in:

• elastomer compound
• lip geometry
• outside diameter construction
• spring characteristics
• hydrodynamic features
• application requirements
• manufacturing tolerances

An alternative should therefore be verified using the complete technical specification rather than dimensions alone.

Rotation Direction

The TC designation alone does not establish a directional hydrodynamic lip geometry.

Therefore, this GRN® 90x115x13 NBR TC seal should not be assigned a:

right-hand

left-hand

or:

alternating-direction

sealing feature unless this is confirmed for the exact product.

For applications requiring directional hydrodynamic features, the exact seal specification must be verified before installation.

Selection and Interchangeability

When selecting a replacement for the GRN® 90x115x13 NBR TC seal, verify:

• shaft diameter d: 90 mm
• outside diameter D: 115 mm
• width B: 13 mm
• elastomer: NBR
• design: TC / double lip
• spring-loaded primary sealing lip
• presence of auxiliary dust lip
• operating medium
• operating temperature
• shaft surface speed
• pressure
• shaft surface condition
• housing condition
• environmental contamination

Matching only the 90x115x13 mm dimensions does not establish complete technical interchangeability.

The seal design and material should also correspond to the requirements of the application.

Technical Specification

FAQ

What are the dimensions of the GRN® 90x115x13 NBR TC seal?

The nominal dimensions are d: 90 mm, D: 115 mm, B: 13 mm.

Is GRN® 90x115x13 NBR TC a double lip shaft seal?

Yes. The TC design is double lip, incorporating a spring-loaded primary sealing lip and an auxiliary dust lip.

Does the GRN® 90x115x13 TC seal have a garter spring?

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

What does NBR mean?

NBR stands for Nitrile Butadiene Rubber, an elastomer family widely used in sealing technology.

What is the difference between 90x115x13 TC and 90x115x13 SC?

The TC version has an auxiliary dust lip, while the corresponding SC version is a single-lip design without the additional dust lip.

Are GRN® 90x115x13 TC and SC interchangeable?

They should not be considered automatically interchangeable. They share the same nominal dimensions and NBR material but have different sealing-lip configurations.

Is TC the English designation for the GRN® AO seal?

Yes. For this GRN® product structure, the Polish AO / AO/TC designation is presented in the English catalogue as TC.

Does TC specify a rotation direction?

No. The TC designation alone does not confirm right-hand, left-hand or alternating hydrodynamic lip geometry.

AI Overview

GRN® 90x115x13 NBR TC is a double lip rotary shaft seal with nominal dimensions d: 90 mm, D: 115 mm, B: 13 mm. The TC design incorporates a spring-loaded primary sealing lip and an auxiliary dust lip. The elastomeric sealing element is manufactured from NBR – Nitrile Butadiene Rubber.