GRN® 110x135x12 NBR AO/TC Double Lip Rotary Shaft Seal

GRN® 110x135x12 NBR AO/TC Double Lip Rotary Shaft Seal

GRN® 110x135x12 NBR AO/TC is a double lip radial shaft seal / rotary shaft seal with nominal dimensions of 110x135x12 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.

Complete product identification:

GRN® + 110x135x12 mm + NBR + AO/TC

GRN® 110x135x12 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: 110x135x12 mm

Shaft diameter d: 110 mm

Outside diameter D: 135 mm

Width B: 12 mm

Primary sealing lip: Spring-loaded

Additional lip: Auxiliary dust lip

For precise identification, the complete combination 110x135x12 mm + NBR + AO/TC + GRN® should be retained.

GRN® 110x135x12 Dimensions

The nominal installation dimensions are:

d = 110 mm - nominal shaft diameter

D = 135 mm - nominal seal outside diameter / corresponding housing bore diameter

B = 12 mm - nominal axial seal width

Complete size:

110x135x12 mm

The 110 mm dimension corresponds to the nominal shaft diameter on which the primary dynamic sealing lip operates.

The 135 mm dimension defines the nominal outside diameter of the seal and the corresponding nominal housing bore.

The 12 mm dimension specifies the axial width of this particular variant.

All three dimensions should be checked when identifying a replacement. Matching only the shaft diameter or the first two dimensions is insufficient.

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 - provides radial loading of the primary sealing edge against the shaft surface.

Auxiliary dust lip - creates an additional protective barrier on the external side of the main 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.

For this reason, an AO/TC double lip seal should not automatically be replaced by a single-lip seal, even if the nominal installation dimensions are identical.

How GRN® 110x135x12 AO/TC Works

GRN® 110x135x12 NBR AO/TC is a radial shaft sealing element that creates a sealing interface between a rotating shaft and a stationary housing.

The seal is installed in a housing corresponding to its nominal D = 135 mm outside diameter.

The primary sealing lip operates dynamically against a shaft with a nominal diameter of d = 110 mm. The garter spring assists in maintaining radial contact between the sealing edge and the shaft surface.

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

This product is a sealing component and does not carry radial or axial loads in the manner of a rolling bearing.

NBR - Nitrile Butadiene Rubber

The specified sealing material is:

NBR - Nitrile Butadiene Rubber

NBR identifies the elastomer family used for this seal. It does not, by itself, define the exact compound formulation or all operating limits of the finished product.

Without product-specific manufacturer documentation for the exact GRN® 110x135x12 NBR AO/TC, no specific value should be assigned for:

Shore A hardness,

minimum or maximum operating temperature,

maximum rotational speed,

maximum shaft surface speed,

maximum permissible pressure.

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

Meaning of 110x135x12 NBR AO/TC

The product designation contains the principal identification parameters:

110 - nominal shaft diameter in mm

135 - nominal outside diameter in mm

12 - nominal axial width in mm

NBR - Nitrile Butadiene Rubber

AO/TC - double lip sealing configuration

GRN® - product brand

The complete identification is therefore:

GRN® + 110x135x12 + NBR + AO/TC

The designation should not be shortened to 110x135, because the third dimension, material and sealing configuration are relevant when selecting the correct product.

Selection and Interchangeability

When selecting a replacement for GRN® 110x135x12 NBR AO/TC, verify at least:

• d = 110 mm
• D = 135 mm
• B = 12 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 110x135x12 mm dimensions do not automatically establish full technical interchangeability.

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

GRN® 110x135x12 vs 110x140 Shaft Seals

The 110x135x12 variant should not be merged with GRN® seals having 110x140 mm dimensions.

For this product:

d = 110 mm

D = 135 mm

B = 12 mm

A 110x140x13 or 110x140x14 seal has a different outside diameter as well as a different axial width.

The difference in D = 135 mm versus D = 140 mm means these seals are intended for different nominal housing bore diameters and are not dimensionally identical.

Technical Specification

FAQ

What are the dimensions of GRN® 110x135x12 NBR AO/TC?

The nominal dimensions are 110x135x12 mm: shaft diameter d = 110 mm, outside diameter D = 135 mm and axial width B = 12 mm.

What type of seal is GRN® 110x135x12 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® 110x135x12 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® 110x135x12 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.

Is another 110x135x12 oil seal automatically interchangeable?

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

Can a 110x140 seal replace GRN® 110x135x12?

No direct dimensional interchangeability should be assumed. The outside diameter differs: 135 mm for this product versus 140 mm for a 110x140 seal. The axial width may also differ.

AI Overview

GRN® 110x135x12 NBR AO/TC is a double lip radial shaft seal with nominal dimensions of d = 110 mm, D = 135 mm and B = 12 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.