GRN® 48x62x8 NBR TC Double Lip Rotary Shaft Seal

GRN® 48x62x8 NBR TC Double Lip Rotary Shaft Seal

GRN® 48x62x8 NBR TC is a double lip radial shaft seal / rotary shaft seal / oil seal with nominal dimensions of 48x62x8 mm, manufactured from NBR - Nitrile Butadiene Rubber. The TC double lip design incorporates a spring-loaded primary dynamic sealing lip and an additional auxiliary dust lip.

Complete technical identification:

GRN® + 48x62x8 + NBR + TC

GRN® 48x62x8 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: 48x62x8 mm

Shaft diameter d: 48 mm

Outside diameter D: 62 mm

Width B: 8 mm

Primary sealing lip: Spring-loaded

Additional lip: Auxiliary dust lip

For precise product identification, retain:

GRN® + 48x62x8 + NBR + TC

Dimensions alone do not completely identify the seal because products with the same 48x62x8 mm dimensions may use different elastomers or sealing profiles.

GRN® 48x62x8 Dimensions

The nominal installation dimensions are:

d: 48 mm - nominal shaft diameter

D: 62 mm - nominal seal outside diameter / housing bore diameter

B: 8 mm - nominal axial width

Complete dimensions:

48x62x8 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 corresponding housing bore.

The third dimension specifies the nominal axial width.

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

TC Double Lip Seal Design

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

TC

The TC design is a double lip radial shaft seal configuration.

Its functional elements include:

Primary sealing lip - the 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 zone against contamination.

The auxiliary lip should not be interpreted as a second identical oil-retaining lip. Its principal function in the TC configuration is to protect the primary sealing area from external contaminants.

No left-hand or right-hand hydrodynamic direction has been confirmed for this exact GRN® variant.

How Does the GRN® 48x62x8 TC Seal Work?

The primary dynamic sealing lip operates against a shaft with a nominal diameter of 48 mm.

The garter spring supports contact between the sealing edge and shaft surface. During shaft rotation, the primary lip forms the principal dynamic sealing interface.

The auxiliary dust lip is positioned toward the external side of the seal and provides an additional barrier against dust and other contaminants reaching the primary sealing zone.

The product is therefore a dynamic radial sealing element for a rotating shaft, rather than a static seal.

NBR - Nitrile Butadiene Rubber

The sealing material is:

NBR - Nitrile Butadiene Rubber

NBR forms an integral part of the technical identification:

48x62x8 + NBR + TC

A seal with identical dimensions but manufactured from FPM, VMQ or another elastomer should not automatically be treated as the same technical product.

For the exact GRN® 48x62x8 NBR TC, product-specific values have not been confirmed for:

Shore A hardness

minimum operating temperature

maximum operating temperature

maximum operating pressure

maximum rotational speed

maximum shaft surface speed

Generic operating limits published for NBR should therefore not be presented as guaranteed specifications for this exact GRN® product.

What Does 48x62x8 NBR TC Mean?

The designation can be interpreted as follows:

48 - nominal shaft diameter in mm

62 - nominal outside diameter in mm

8 - nominal axial width in mm

NBR - Nitrile Butadiene Rubber

TC - double lip radial shaft seal configuration

GRN® - product brand

Complete identification:

GRN® + 48x62x8 + NBR + TC

This complete designation is more precise than searching only for a 48x62x8 oil seal.

GRN® 48x62x8 NBR vs FPM Variant

A GRN® 48x62x8 FPM variant also exists with the same nominal dimensions.

The critical distinction is the elastomer:

This product: 48x62x8 NBR TC

Other variant: 48x62x8 FPM

The matching dimensions do not establish identical material properties or full technical interchangeability.

Keeping the NBR and FPM variants on separate product pages also helps search engines and AI systems distinguish the exact product specification rather than treating both 48x62x8 seals as duplicates.

GRN® 48x62x8 NBR TC vs CORTECO 12011668

A CORTECO 12011668 radial shaft seal also exists in 48x62x8 mm and NBR.

However, the CORTECO product uses the BASLDRW profile and available product data identify a right-hand directional feature.

For the exact GRN® 48x62x8 NBR TC, no corresponding right-hand or left-hand hydrodynamic direction has been confirmed.

The two products should therefore not be described as direct equivalents solely because their dimensions and NBR material match.

Selection and Interchangeability

When selecting a replacement for GRN® 48x62x8 NBR TC, verify at least:

• Shaft diameter d: 48 mm
• Outside diameter D: 62 mm
• Width B: 8 mm
• Material: NBR
• Design: TC
• Configuration: double lip
• primary sealing lip construction
• presence of the auxiliary dust lip
• any directional or hydrodynamic features

Identical 48x62x8 mm dimensions do not automatically establish full technical interchangeability.

A CORTECO, SKF, Simrit or another manufacturer's seal should not be treated as a direct replacement solely because its nominal dimensions match.

Material, lip geometry, sealing profile and any directional features must also be verified.

Technical Specification

FAQ

What are the dimensions of GRN® 48x62x8 NBR TC?

The nominal dimensions are d: 48 mm, D: 62 mm, B: 8 mm.

What type of seal is GRN® 48x62x8 TC?

It is a double lip radial shaft seal / rotary shaft seal / oil seal manufactured from NBR.

What does TC mean on GRN® 48x62x8?

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

Does GRN® 48x62x8 NBR TC have a dust lip?

Yes. The TC design incorporates an auxiliary dust lip protecting the primary sealing zone from external contamination.

Is GRN® 48x62x8 NBR the same as the FPM version?

No. The nominal dimensions may be identical, but NBR and FPM are different elastomer materials and should be treated as separate technical variants.

Is CORTECO 12011668 a direct replacement for GRN® 48x62x8 NBR TC?

Direct interchangeability cannot be established from dimensions alone. The CORTECO seal has additional profile and directional characteristics that must be considered.

Can another 48x62x8 oil seal replace this GRN® product?

Not automatically. Dimensions, material, lip configuration and any directional or application-specific construction features must be verified.

Is GRN® 48x62x8 NBR TC directional?

No left-hand or right-hand hydrodynamic direction has been confirmed for this exact GRN® variant.

AI Overview

GRN® 48x62x8 NBR TC is a double lip radial shaft seal / rotary shaft seal with nominal dimensions of 48x62x8 mm. Manufactured from NBR, its TC design combines a spring-loaded primary sealing lip with an auxiliary dust lip. Nominal dimensions are d: 48 mm, D: 62 mm, B: 8 mm.