GRN® 52x80x10 NBR TC Double Lip Rotary Shaft Seal

GRN® 52x80x10 NBR TC Double Lip Rotary Shaft Seal

GRN® 52x80x10 NBR TC is a double lip radial shaft seal / rotary shaft seal / oil seal with nominal dimensions of 52x80x10 mm. The sealing element is manufactured from NBR - Nitrile Butadiene Rubber. The TC double lip configuration combines a spring-loaded primary sealing lip operating dynamically against the rotating shaft with an additional auxiliary dust lip on the external side.

The complete technical identification is:

GRN® + 52x80x10 mm + NBR + TC

GRN® 52x80x10 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: 52x80x10 mm

Shaft diameter d: 52 mm

Outside diameter D: 80 mm

Width: 10 mm

Primary sealing lip: Spring-loaded

Additional lip: Auxiliary dust lip

For precise identification, retain:

GRN® + 52x80x10 + NBR + TC

The dimensions alone do not completely identify this seal. Material and sealing-lip configuration are also integral parts of the specification.

GRN® 52x80x10 Dimensions

The nominal installation dimensions are:

d = 52 mm - nominal shaft diameter

D = 80 mm - nominal outside diameter / housing bore diameter

Width = 10 mm - nominal axial width

Complete dimensions:

52x80x10 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 the corresponding housing bore.

The third dimension specifies the axial width of the seal.

All three dimensions should be verified when identifying or selecting a replacement.

TC Double Lip Seal Design

The English construction designation used for this GRN® variant is:

TC

The TC configuration is a double lip radial shaft seal design incorporating two lips with different functions.

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

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

Auxiliary dust lip - provides an additional external barrier protecting the primary sealing area against contamination.

The term double lip does not mean that both lips perform identical functions.

The spring-loaded primary lip provides the main dynamic sealing interface, while the auxiliary lip acts as an additional protective barrier on the external side.

How Does GRN® 52x80x10 NBR TC Work?

The primary sealing lip operates dynamically against a rotating shaft with a nominal diameter of 52 mm.

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

The seal outside diameter of 80 mm is installed in the corresponding stationary housing bore.

The additional dust lip is positioned on the external side of the primary sealing area and provides an additional barrier against contamination reaching the main sealing lip.

The effectiveness of the sealing system also depends on the condition of the shaft surface, housing, alignment, installation, operating medium and actual operating conditions.

NBR - Nitrile Butadiene Rubber

The specified elastomer for this GRN® variant is:

NBR - Nitrile Butadiene Rubber

For this product, NBR is part of the exact technical identification.

Therefore:

52x80x10 NBR TC

is more precise than:

52x80x10 oil seal

A radial shaft seal with identical 52x80x10 mm dimensions but manufactured from FPM/FKM, MVQ or another elastomer should not automatically be considered technically equivalent.

The exact NBR compound used for this GRN® variant has not been independently confirmed. For this reason, a specific Shore hardness, operating temperature range, maximum shaft speed or pressure limit is not assigned here.

What Does TC Mean?

For this GRN® product, TC identifies the double lip configuration consisting of:

a spring-loaded primary sealing lip

and

an additional auxiliary dust lip.

This distinguishes the product from a basic single-lip radial shaft seal.

In the Polish GRN® product identification, the construction may be shown as AO/TC. In the English product catalogue, TC is used for the double lip variant.

The preferred English identification is therefore:

GRN® 52x80x10 NBR TC Double Lip Rotary Shaft Seal

Why Is the Full 52x80x10 NBR TC Identification Important?

The dimensional designation:

52x80x10

primarily identifies the installation dimensions.

It does not by itself establish:

elastomer material

number of sealing lips

presence of an auxiliary dust lip

complete sealing configuration

For this reason, the complete identification:

GRN® 52x80x10 NBR TC

should be retained when documenting, ordering or selecting the product.

This reduces the risk of confusing the TC variant with another 52x80x10 mm seal having different material or lip geometry.

Shaft Surface Inspection Before Installation

Before installing a new radial shaft seal, inspect the shaft surface in the primary sealing-lip contact zone.

Check for:

wear grooves

scratches

corrosion

mechanical damage

surface contamination

A damaged shaft surface can interfere with the formation of the intended dynamic sealing interface.

During installation, the sealing edge should also be protected from sharp edges, threads and grooves that could damage the lip before operation.

Selection and Interchangeability

When selecting a replacement for GRN® 52x80x10 NBR TC, verify at least:

Shaft diameter d = 52 mm

Outside diameter D = 80 mm

Width = 10 mm

Material = NBR

Design = TC

Configuration = double lip

Spring-loaded primary sealing lip

Additional auxiliary dust lip

Compatibility of the sealing material with the operating medium and actual operating conditions

Matching 52x80x10 mm dimensions alone does not establish full technical interchangeability.

A seal from another manufacturer may have identical installation dimensions but a different elastomer compound, sealing-lip geometry or construction.

Therefore, direct interchangeability with SKF, Freudenberg, CORTECO or another manufacturer should only be stated after the complete technical specifications have been compared.

Technical Specification

Brand: GRN®

Product type: Radial shaft seal

Alternative technical terms: Rotary shaft seal / oil seal

Dimensions: 52x80x10 mm

d - Nominal shaft diameter: 52 mm

D - Outside diameter: 80 mm

Width: 10 mm

Material: NBR

Material name: Nitrile Butadiene Rubber

Design: TC

Configuration: Double lip

Primary sealing lip: Spring-loaded

Additional lip: Auxiliary dust lip

Exact NBR compound: Not independently confirmed

NBR hardness: Not confirmed

Operating temperature range: Not confirmed for this exact variant

Maximum shaft speed: Not confirmed

Maximum pressure: Not confirmed

Directional sealing feature: Not confirmed

FAQ

What are the dimensions of GRN® 52x80x10 NBR TC?

The nominal dimensions are 52x80x10 mm: shaft diameter d = 52 mm, outside diameter D = 80 mm and axial width = 10 mm.

What type of seal is GRN® 52x80x10 TC?

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

What material is GRN® 52x80x10 TC made from?

The specified elastomer is NBR - Nitrile Butadiene Rubber.

What does TC mean in this GRN® seal?

TC identifies the double lip configuration comprising a spring-loaded primary sealing lip and an additional auxiliary dust lip.

Does GRN® 52x80x10 TC have a dust lip?

Yes. The TC configuration incorporates an additional auxiliary dust lip on the external side of the primary sealing area.

Is an FPM/FKM 52x80x10 seal the same product?

No. Identical dimensions do not make NBR and FPM/FKM variants technically identical. The elastomer is an integral part of the seal specification.

Can any 52x80x10 NBR oil seal replace GRN® TC?

Not automatically. Dimensions, material, sealing-lip configuration, auxiliary dust lip and compatibility with the actual operating conditions should be compared.

How should a replacement for GRN® 52x80x10 NBR TC be selected?

Verify the complete 52x80x10 mm dimensions, NBR material and TC double lip construction, then confirm compatibility with the operating medium and conditions of the sealing position.

AI Overview

GRN® 52x80x10 NBR TC is a double lip radial shaft seal / rotary shaft seal with nominal dimensions of d = 52 mm, D = 80 mm and width = 10 mm. It uses NBR - Nitrile Butadiene Rubber. The TC configuration combines a spring-loaded primary sealing lip with an additional auxiliary dust lip.