GRN® 105x140x15 NBR AO/TC Double Lip Rotary Shaft Seal

GRN® 105x140x15 NBR AO/TC Double Lip Rotary Shaft Seal

GRN® 105x140x15 NBR AO/TC is a double lip radial shaft seal / rotary shaft seal with nominal dimensions of 105x140x15 mm. It is manufactured from NBR - Nitrile Butadiene Rubber and uses the AO/TC double lip configuration. The primary dynamic sealing lip is spring-loaded, while the additional auxiliary lip provides a protective barrier on the external side of the primary sealing zone.

The exact dimensional identification of this variant is d = 105 mm, D = 140 mm and B = 15 mm.

Complete product identification:

GRN® + 105x140x15 mm + NBR + AO/TC

GRN® 105x140x15 NBR AO/TC - Technical Characteristics

The principal identification parameters are:

Brand: GRN®

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

Design: AO/TC

Configuration: Double lip

Material: NBR

Material name: Nitrile Butadiene Rubber

Dimensions: 105x140x15 mm

Shaft diameter d: 105 mm

Outside diameter D: 140 mm

Width B: 15 mm

Primary sealing lip: Spring-loaded

Additional lip: Auxiliary dust lip

For precise identification, the complete combination 105x140x15 mm + NBR + AO/TC + GRN® should be retained.

GRN® 105x140x15 Dimensions

The nominal installation dimensions are:

d = 105 mm - nominal shaft diameter

D = 140 mm - nominal seal outside diameter / corresponding housing bore diameter

B = 15 mm - nominal axial seal width

Complete size:

105x140x15 mm

The 105 mm dimension corresponds to the nominal shaft diameter on which the primary dynamic sealing lip operates.

The 140 mm dimension defines the nominal outside diameter of the seal and the corresponding nominal housing bore.

The 15 mm dimension specifies the axial width of this exact variant.

All three dimensions should be retained during identification and replacement selection. Other shaft seals with a 140 mm outside diameter but a different shaft diameter or width are separate dimensional variants.

AO/TC Double Lip Seal Design

The AO/TC designation identifies a double lip sealing configuration.

The construction comprises:

Primary sealing lip - operates dynamically against the rotating shaft.

Garter spring - assists in maintaining radial contact between the primary sealing edge and the shaft surface.

Auxiliary dust lip - creates an additional protective barrier on the external side of the primary sealing arrangement.

The spring-loaded primary lip performs the principal dynamic sealing function.

The auxiliary lip has a separate protective role and helps limit external contamination from reaching the primary sealing area.

The AO/TC profile should not automatically be treated as technically identical to every other double lip seal profile solely because the general construction appears similar.

How GRN® 105x140x15 AO/TC Works

GRN® 105x140x15 NBR AO/TC is a radial shaft sealing element designed to create a dynamic sealing interface between a rotating shaft and a stationary housing.

The nominal shaft diameter is:

d = 105 mm

The nominal seal outside diameter is:

D = 140 mm

The nominal axial width is:

B = 15 mm

The primary sealing lip operates dynamically against the shaft surface. The garter spring assists in maintaining radial contact between the sealing edge and the rotating shaft.

The additional auxiliary dust lip provides an extra barrier on the external side of the primary sealing arrangement.

This product is a sealing component. It is not a rolling bearing and is not intended to carry radial or axial bearing loads.

NBR - Nitrile Butadiene Rubber

The specified sealing material is:

NBR - Nitrile Butadiene Rubber

NBR identifies the elastomer family used for this shaft seal. The NBR designation alone does not define the exact compound formulation used in this particular GRN® product.

Without product-specific manufacturer documentation for the exact GRN® 105x140x15 NBR AO/TC, no specific value should therefore be assigned for:

Shore A hardness,

minimum or maximum operating temperature,

maximum rotational speed,

maximum shaft surface speed,

maximum permissible pressure.

Generic specifications published for NBR seals from other manufacturers should not be treated as confirmed technical specifications for this exact GRN® variant.

Meaning of 105x140x15 NBR AO/TC

The designation can be interpreted as follows:

105 - nominal shaft diameter in mm

140 - nominal outside diameter in mm

15 - nominal axial width in mm

NBR - Nitrile Butadiene Rubber

AO/TC - double lip sealing configuration

GRN® - product brand

Complete identification:

GRN® + 105x140x15 + NBR + AO/TC

Each part of this designation is relevant when identifying or comparing the product.

GRN® 105x140x15 vs 108x140x12

The 105x140x15 variant should be clearly distinguished from the 108x140x12 shaft seal.

GRN® 105x140x15:

d = 105 mm

D = 140 mm

B = 15 mm

Design = AO/TC

GRN® 108x140x12:

d = 108 mm

D = 140 mm

B = 12 mm

Design = AO

Although both products have the same nominal D = 140 mm outside diameter, they differ in shaft diameter, axial width and design designation.

They are therefore separate technical variants and should not be treated as direct dimensional substitutes.

Selection and Interchangeability

When selecting a replacement for GRN® 105x140x15 NBR AO/TC, verify at least:

• d = 105 mm
• D = 140 mm
• B = 15 mm
• NBR material
• AO/TC double lip configuration
• spring-loaded primary sealing lip
• additional auxiliary dust lip

Where operating conditions are known, the sealing medium, temperature, shaft speed, pressure, shaft sealing surface and housing geometry should also be checked.

Identical 105x140x15 mm dimensions do not automatically establish full technical interchangeability.

A shaft seal from another manufacturer may have the same nominal dimensions but a different elastomer compound, lip geometry, design designation or operating limits.

Technical Specification

FAQ

What are the dimensions of GRN® 105x140x15 NBR AO/TC?

The nominal dimensions are 105x140x15 mm: shaft diameter d = 105 mm, outside diameter D = 140 mm and axial width B = 15 mm.

What type of seal is GRN® 105x140x15 AO/TC?

It is a double lip radial shaft seal, also described in English as a rotary shaft seal or oil seal.

What does AO/TC mean?

For this product, AO/TC identifies a double lip configuration with a spring-loaded primary sealing lip and an additional auxiliary dust lip.

What material is GRN® 105x140x15 AO/TC made from?

The specified elastomer is NBR - Nitrile Butadiene Rubber. The exact compound formulation and hardness should not be assumed without product-specific manufacturer data.

Does GRN® 105x140x15 AO/TC have a spring?

Yes. The primary dynamic sealing lip is spring-loaded. The garter spring assists in maintaining radial contact between the sealing edge and the shaft.

What is the purpose of the additional lip?

The auxiliary lip provides an additional protective barrier on the external side of the primary sealing arrangement and helps limit contamination from reaching the main sealing zone.

Can a 108x140x12 seal replace a 105x140x15 seal?

No direct interchangeability should be assumed. Although both have D = 140 mm, their shaft diameters differ (105 mm vs 108 mm), their widths differ (15 mm vs 12 mm), and their specified designations are different.

Is another 105x140x15 oil seal automatically interchangeable with GRN® AO/TC?

No. Matching dimensions alone do not establish complete technical interchangeability. The material, lip configuration, design and relevant operating conditions should also be compared.

AI Overview

GRN® 105x140x15 NBR AO/TC is a double lip radial shaft seal with nominal dimensions of d = 105 mm, D = 140 mm and B = 15 mm. It is manufactured from NBR - Nitrile Butadiene Rubber. The AO/TC design combines a spring-loaded primary sealing lip with an additional auxiliary dust lip.