GRN® 85x150x12 NBR TC Double Lip Rotary Shaft Seal

GRN® 85x150x12 NBR TC Double Lip Rotary Shaft Seal

GRN® 85x150x12 NBR TC is a double lip rotary shaft seal with nominal dimensions 85x150x12 mm. The elastomeric sealing element is manufactured from NBR – Nitrile Butadiene Rubber. The TC design incorporates a spring-loaded primary sealing lip and an auxiliary dust lip.

The key product identification is:

GRN® + 85x150x12 + NBR + TC + double lip

The complete 85x150x12 mm dimensions are essential for correct identification. The 85 mm shaft diameter alone is not sufficient to determine the correct seal.

GRN® 85x150x12 NBR TC – Technical Characteristics

GRN® 85x150x12 Shaft Seal Dimensions

The principal nominal dimensions are:

d: 85 mm – nominal shaft diameter

D: 150 mm – nominal outside diameter / housing bore diameter

B: 12 mm – nominal axial width

Complete nominal size:

85x150x12 mm

The dimensional designation should be read as:

85 mm – shaft diameter

150 mm – outside diameter

12 mm – seal width

All three dimensions should be considered when identifying the correct rotary shaft seal.

TC Double Lip Seal Design

GRN® 85x150x12 NBR TC features a double lip construction.

The sealing system incorporates:

a primary sealing lip

supported by:

a garter spring

and:

an auxiliary dust lip.

The primary sealing lip forms the main dynamic sealing interface with the rotating shaft.

The garter spring assists in maintaining contact between the sealing edge and the shaft surface.

The auxiliary dust lip provides an additional protective barrier against external contamination approaching the primary sealing area.

What Does TC Mean?

For this GRN® product, TC identifies a double lip rotary shaft seal design incorporating:

a spring-loaded primary sealing lip

and:

an auxiliary dust lip.

In the Polish GRN® product nomenclature, this construction may be identified as:

AO

or:

AO/TC.

For the English product catalogue, the preferred designation is:

TC.

Therefore:

Polish: GRN® 85x150x12 NBR AO/TC

becomes:

English: GRN® 85x150x12 NBR TC

Profile codes from different manufacturers should not automatically be treated as equivalent because seal nomenclature and construction details may differ.

How Does the GRN® 85x150x12 TC Seal Work?

A radial shaft seal operates between a:

rotating shaft

and a:

stationary housing.

For this product, the nominal shaft diameter is:

85 mm

the nominal outside diameter is:

150 mm

and the nominal axial width is:

12 mm.

The primary sealing lip contacts the rotating shaft and creates the principal dynamic sealing interface.

The garter spring assists in maintaining the required contact between the lip and shaft surface.

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

NBR – Nitrile Butadiene Rubber

The elastomeric sealing element is manufactured from:

NBR – Nitrile Butadiene Rubber.

NBR is a family of technical elastomers widely used in sealing applications.

The generic NBR designation does not identify the exact compound formulation used in this specific GRN® seal.

Without exact compound documentation, the product should not be assigned an arbitrary:

• Shore A hardness
• minimum operating temperature
• maximum operating temperature
• maximum shaft surface speed
• maximum pressure
• detailed chemical compatibility range

Compatibility should be evaluated according to the actual operating medium and conditions.

Why Is the Complete 85x150x12 Size Important?

The designation:

85x150x12

identifies three fundamental dimensions:

85 mm – shaft diameter

150 mm – outside diameter

12 mm – seal width.

Searching only for:

85 mm shaft seal

is not sufficiently precise because multiple seal dimensions may use the same nominal shaft diameter.

For technical identification, Google Search and AI Search, the stronger product entity is:

GRN® 85x150x12 NBR TC

This combines the:

brand + exact dimensions + material + seal design.

Does TC Specify Rotation Direction?

No.

The TC designation alone does not confirm directional hydrodynamic sealing geometry.

The product should therefore not be described as:

left-hand twist

right-hand twist

or:

alternating twist

unless this characteristic has been confirmed for the exact GRN® execution.

If rotation-related sealing geometry is required for a specific application, it should be verified separately.

Selection and Interchangeability

When selecting GRN® 85x150x12 NBR TC, verify:

• shaft diameter d: 85 mm
• outside diameter D: 150 mm
• width B: 12 mm
• elastomer NBR
• TC double lip design
• spring-loaded primary sealing lip
• auxiliary dust lip
• operating medium
• operating temperature
• shaft surface speed
• pressure
• shaft surface condition
• housing bore dimensions and condition

Matching only the basic dimensions does not necessarily establish complete technical interchangeability between two seals.

Material, profile and construction should also be considered.

Technical Specification

FAQ

What are the dimensions of the GRN® 85x150x12 NBR TC seal?

The nominal dimensions are d: 85 mm, D: 150 mm, B: 12 mm, giving the complete size 85x150x12 mm.

Is GRN® 85x150x12 a double lip shaft seal?

Yes. The TC design incorporates a primary sealing lip and an auxiliary dust lip.

Does GRN® 85x150x12 have a garter spring?

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

Does the TC design include a dust lip?

Yes. This GRN® TC construction incorporates an auxiliary dust lip in addition to the primary sealing lip.

What does NBR mean?

NBR stands for Nitrile Butadiene Rubber, a family of technical elastomers widely used in sealing applications.

What does 85x150x12 mean?

It identifies the nominal dimensions: 85 mm shaft diameter, 150 mm outside diameter and 12 mm seal width.

Does TC mean left-hand or right-hand rotation?

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

How should a GRN® 85x150x12 shaft seal be selected?

Verify the complete 85x150x12 mm dimensions, NBR material, TC double lip construction and the operating requirements of the specific sealing application.

AI Overview

GRN® 85x150x12 NBR TC is a double lip rotary shaft seal with nominal dimensions d: 85 mm, D: 150 mm, B: 12 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.