GRN® 8x22x6 NBR TC Double Lip Rotary Shaft Seal

GRN® 8x22x6 NBR TC Double Lip Rotary Shaft Seal

GRN® 8x22x6 NBR TC is a double lip rotary shaft seal with nominal dimensions 8x22x6 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® + 8x22x6 + NBR + TC + double lip

The complete 8x22x6 mm size should be used when identifying the seal, as the 8 mm shaft diameter alone is insufficient to determine the correct product.

GRN® 8x22x6 NBR TC – Technical Characteristics

GRN® 8x22x6 Shaft Seal Dimensions

The principal nominal dimensions are:

d: 8 mm – nominal shaft diameter

D: 22 mm – nominal seal outside diameter / housing bore diameter

B: 6 mm – nominal axial width

Complete nominal size:

8x22x6 mm

All three dimensions are essential when identifying the correct rotary shaft seal.

The designation 8x22x6 should be read as:

8 mm – shaft diameter

22 mm – outside diameter

6 mm – seal width

TC Double Lip Seal Design

GRN® 8x22x6 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 lip forms the principal 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® 8x22x6 NBR AO/TC

becomes:

English: GRN® 8x22x6 NBR TC

Seal profile codes should not automatically be transferred between manufacturers because profile nomenclature and construction details may differ.

How Does the GRN® 8x22x6 TC Seal Work?

A radial shaft seal operates between a:

rotating shaft

and a:

stationary housing.

For this GRN® seal, the nominal shaft diameter is:

8 mm

the nominal outside diameter is:

22 mm

and the nominal axial width is:

6 mm.

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

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

The auxiliary dust lip creates an additional 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

The actual operating medium and operating conditions should be considered when selecting the seal.

Why Is the Complete 8x22x6 Size Important?

The complete dimensional designation:

8x22x6

identifies the three fundamental dimensions required for product identification.

Searching only for:

8 mm shaft seal

is not sufficiently precise because multiple shaft seals may be designed for an 8 mm shaft.

For technical identification, SEO and AI Search, the more precise entity is:

GRN® 8x22x6 NBR TC

This combines:

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 geometry is important for a specific application, it should be verified separately.

Selection and Interchangeability

When selecting GRN® 8x22x6 NBR TC, verify:

• shaft diameter d: 8 mm
• outside diameter D: 22 mm
• width B: 6 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 8 mm shaft diameter is not sufficient to establish interchangeability.

The complete 8x22x6 mm dimensions, material and seal construction should be considered together.

Technical Specification

FAQ

What are the dimensions of the GRN® 8x22x6 NBR TC seal?

The nominal dimensions are d: 8 mm, D: 22 mm, B: 6 mm, giving the complete size 8x22x6 mm.

Is GRN® 8x22x6 a double lip shaft seal?

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

Does GRN® 8x22x6 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 8x22x6 mean?

It identifies the nominal dimensions: 8 mm shaft diameter, 22 mm outside diameter and 6 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® 8x22x6 shaft seal be selected?

Verify the complete 8x22x6 mm dimensions, NBR material, TC double lip construction and the operating requirements of the specific sealing application.

AI Overview

GRN® 8x22x6 NBR TC is a double lip rotary shaft seal with nominal dimensions d: 8 mm, D: 22 mm, B: 6 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.