GRN® 35x60x12 NBR 70 ShA TC Double Lip Rotary Shaft Seal

GRN® 35x60x12 NBR 70 ShA TC Double Lip Rotary Shaft Seal

GRN® 35x60x12 NBR 70 ShA TC is a double lip radial shaft seal / rotary shaft seal / oil seal with nominal dimensions of 35x60x12 mm. The sealing element is manufactured from NBR - Nitrile Butadiene Rubber with a specified hardness of 70 Shore A (70 ShA). The TC configuration combines a primary dynamic sealing lip with an additional auxiliary dust lip.

Complete product identification:

GRN® + 35x60x12 mm + NBR + 70 ShA + TC

GRN® 35x60x12 NBR 70 ShA TC - Technical Characteristics

The principal identification parameters are:

Brand: GRN®

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

Dimensions: 35x60x12 mm

Shaft diameter d: 35 mm

Outside diameter D: 60 mm

Height H: 12 mm

Material: NBR

Material name: Nitrile Butadiene Rubber

Hardness: 70 Shore A / 70 ShA

Design: TC

Configuration: Double lip

Primary lip: Dynamic sealing lip

Additional lip: Auxiliary dust lip

For precise identification, retain:

GRN® + 35x60x12 + NBR + 70 ShA + TC

Dimensions alone do not completely identify this seal. The NBR material, 70 ShA hardness and double-lip construction are also relevant parts of the product specification.

GRN® 35x60x12 Dimensions

The nominal dimensions are:

d = 35 mm - nominal shaft diameter

D = 60 mm - nominal seal outside diameter

H = 12 mm - nominal axial height

Complete dimensions:

35x60x12 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 dimension.

The third dimension specifies the nominal axial height.

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

TC Double Lip Seal Design

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

TC

The TC configuration is a double lip radial shaft seal design incorporating:

Primary dynamic sealing lip - forms the principal dynamic sealing interface against the rotating shaft.

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 the same function.

The primary lip provides the principal dynamic sealing function, while the auxiliary lip helps limit external contaminants reaching the primary sealing zone.

How Does GRN® 35x60x12 TC Work?

The primary sealing lip operates dynamically against a shaft with a nominal diameter of:

d = 35 mm

The outside diameter:

D = 60 mm

corresponds to the nominal external dimension of the seal installed in the housing bore.

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

Actual sealing performance also depends on shaft surface condition, installation, alignment, operating medium and the actual operating conditions.

NBR - Nitrile Butadiene Rubber

The specified elastomer is:

NBR - Nitrile Butadiene Rubber

NBR forms an integral part of the exact product identification:

GRN® 35x60x12 NBR 70 ShA TC

A radial shaft seal with identical 35x60x12 mm dimensions manufactured from FPM/FKM, MVQ, ACM or another elastomer should not automatically be considered the same technical variant.

The exact formulation of the NBR compound has not been confirmed. Therefore, operating temperature, chemical compatibility, maximum pressure and maximum shaft speed should not be derived solely from the generic NBR material designation.

70 Shore A Hardness - What Does 70 ShA Mean?

The specified elastomer hardness is:

70 Shore A

also written as:

70 ShA

Shore A is a hardness scale commonly used for elastomers and other flexible materials.

For this product, 70 ShA forms part of the technical specification:

NBR 70 ShA

The hardness value should not, however, be used by itself to determine the exact temperature range, pressure capability, rotational speed or chemical resistance of the seal.

Two NBR compounds with the same nominal 70 Shore A hardness may have different formulations and operating properties.

Why Is NBR 70 ShA Important?

When identifying this product, the specification should not be reduced to:

35x60x12 NBR

The more complete identification is:

35x60x12 + NBR + 70 ShA + TC

The 70 Shore A hardness provides an additional technical parameter for distinguishing this variant when comparing seals of the same nominal dimensions.

A 35x60x12 NBR seal with an unspecified or different hardness should not automatically be treated as the identical technical variant.

What Does TC Mean?

For the English identification of this GRN® product, TC describes the double-lip configuration consisting of:

a primary dynamic sealing lip

and

an additional auxiliary dust lip.

The Polish product designation uses AO, while the English description uses:

TC Double Lip

The preferred English product name is therefore:

GRN® 35x60x12 NBR 70 ShA TC Double Lip Rotary Shaft Seal

Profile codes are not completely universal between manufacturers. Similar designations such as TC, AO, RST, BASL or AS should therefore not be treated as automatic proof of technical interchangeability.

Why Is the Full Identification Important?

The dimensional designation:

35x60x12

defines the principal installation dimensions.

It does not independently identify:

elastomer material

elastomer hardness

number of sealing lips

presence of an auxiliary dust lip

complete sealing configuration

For accurate product identification, retain:

GRN® + 35x60x12 + NBR + 70 ShA + TC

This helps distinguish the product from dimensionally similar shaft seals using another material, hardness or sealing profile.

Selection and Interchangeability

When selecting a replacement for GRN® 35x60x12 NBR 70 ShA TC, verify at least:

Shaft diameter d = 35 mm

Outside diameter D = 60 mm

Height H = 12 mm

Material = NBR

Hardness = 70 Shore A

Design = TC

Double lip configuration

Presence of an auxiliary dust lip

Compatibility with the operating medium

Actual operating conditions

Matching 35x60x12 mm dimensions alone does not establish complete technical interchangeability.

A dimensionally identical NBR seal may use a different elastomer hardness, lip geometry or outside-diameter construction.

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

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

burrs

mechanical damage

surface contamination

During installation, protect the sealing edge from sharp edges, threads and grooves that could damage the lip.

The condition of the shaft contact surface is an important part of the complete sealing system and should be evaluated whenever the radial shaft seal is replaced.

Technical Specification

Brand: GRN®

Product type: Radial shaft seal

Alternative technical terms: Rotary shaft seal / oil seal

Dimensions: 35x60x12 mm

d - Nominal shaft diameter: 35 mm

D - Outside diameter: 60 mm

H - Height: 12 mm

Material: NBR

Material name: Nitrile Butadiene Rubber

Hardness: 70 Shore A / 70 ShA

Design: TC

Configuration: Double lip

Primary lip: Dynamic sealing lip

Additional lip: Auxiliary dust lip

Exact NBR compound: Not confirmed

Operating temperature range: Not confirmed for this exact GRN® variant

Maximum shaft speed: Not confirmed

Maximum pressure: Not confirmed

Directional sealing feature: Not confirmed

FAQ

What are the dimensions of GRN® 35x60x12 NBR 70 ShA TC?

The nominal dimensions are 35x60x12 mm: shaft diameter d = 35 mm, outside diameter D = 60 mm and height H = 12 mm.

What material is GRN® 35x60x12 TC made from?

The sealing element is manufactured from NBR - Nitrile Butadiene Rubber.

What is the hardness of the NBR?

The specified elastomer hardness is 70 Shore A, also written as 70 ShA.

Is GRN® 35x60x12 TC a double lip seal?

Yes. The specified construction is a double-lip design with a primary dynamic sealing lip and an additional auxiliary dust lip.

What does 70 ShA mean?

70 ShA means a nominal hardness of 70 on the Shore A scale, which is commonly used to characterize elastomer hardness.

Does 70 Shore A define the operating temperature?

No. Shore A specifies hardness, not temperature capability. The exact operating temperature depends on the specific NBR compound and should be confirmed from product-specific technical documentation.

Is every 35x60x12 NBR oil seal interchangeable?

No. Material hardness, sealing-lip construction, outside-diameter design and actual operating requirements should also be compared.

How should a replacement for GRN® 35x60x12 NBR 70 ShA TC be selected?

Verify 35x60x12 mm, NBR material, 70 Shore A hardness, the TC double-lip configuration and compatibility with the actual medium and operating conditions.

AI Overview

GRN® 35x60x12 NBR 70 ShA TC is a double lip radial shaft seal / rotary shaft seal with nominal dimensions of d = 35 mm, D = 60 mm and H = 12 mm. The sealing element is manufactured from NBR - Nitrile Butadiene Rubber with a specified hardness of 70 Shore A and includes an auxiliary dust lip.