GRN® 105x140x13 NBR AO/TC Double-Lip Rotary Shaft Seal

GRN® 105x140x13 NBR AO/TC Double-Lip Rotary Shaft Seal

GRN® 105x140x13 NBR AO/TC is a double-lip rotary shaft seal / radial shaft seal / oil seal with nominal dimensions of 105x140x13 mm. It is manufactured from NBR - Nitrile Butadiene Rubber. The AO/TC design combines a spring-loaded primary dynamic sealing lip with an additional auxiliary dust lip.

The key technical identification is:

GRN® + 105x140x13 mm + NBR + AO/TC

GRN® 105x140x13 NBR AO/TC - Technical Characteristics

Brand: GRN®

Product type: Rotary Shaft Seal / Radial Shaft Seal / Oil Seal

Design: AO/TC

Configuration: Double lip

Material: NBR

Material name: Nitrile Butadiene Rubber

Dimensions: 105x140x13 mm

Shaft diameter d: 105 mm

Outside diameter D: 140 mm

Seal width B: 13 mm

Primary sealing lip: Yes

Garter spring: Yes

Additional dust lip: Yes

The dimensions, material and sealing-lip configuration should be considered together when identifying the exact seal.

GRN® 105x140x13 Oil Seal Dimensions

Nominal dimensions:

d = 105 mm - nominal shaft diameter

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

B = 13 mm - axial seal width

Complete dimensions:

105x140x13 mm

The seal is dimensionally specified for a nominal 105 mm shaft and 140 mm housing bore, with an axial width of 13 mm.

All three dimensions should be retained when selecting a replacement.

AO/TC Double-Lip Seal Design

The AO/TC configuration incorporates:

a primary dynamic sealing lip

a garter spring acting on the primary sealing lip

an additional auxiliary dust lip

The primary sealing lip operates dynamically against the rotating shaft surface and performs the principal sealing function.

The auxiliary lip provides an additional external barrier against dust and contamination approaching the primary sealing area.

Spring-Loaded Primary Sealing Lip

The primary sealing lip operates against the nominal:

d = 105 mm shaft

The circumferential garter spring helps maintain radial contact between the primary sealing edge and the rotating shaft surface.

The spring acts on the primary dynamic sealing lip. The additional dust lip should not be interpreted as a second identical spring-loaded sealing lip.

Additional Auxiliary Dust Lip

The AO/TC design incorporates an additional auxiliary dust lip.

Its principal role is to provide an additional barrier between the external environment and the primary sealing area.

This additional lip distinguishes the AO/TC double-lip configuration from the corresponding A/SC single-lip configuration.

NBR - Nitrile Butadiene Rubber

The sealing material is:

NBR - Nitrile Butadiene Rubber

Material is an integral part of the complete product specification:

105x140x13 + NBR + AO/TC

A 105x140x13 seal manufactured from FKM/FPM, silicone or another elastomer represents a different material variant even when its nominal dimensions are identical.

The exact NBR compound used for this GRN® product has not been confirmed. Therefore, an exact hardness, fixed operating temperature range, maximum pressure or maximum shaft speed should not be assigned solely from generic NBR properties.

How Does the GRN® 105x140x13 Rotary Shaft Seal Work?

A radial shaft seal operates at the interface between a:

rotating shaft

and a

stationary housing

For this size:

Nominal shaft diameter: 105 mm

Nominal housing bore diameter: 140 mm

Seal width: 13 mm

The spring-loaded primary lip operates dynamically against the shaft surface, while the additional AO/TC lip provides an external protective barrier.

Actual sealing performance also depends on shaft surface condition, runout, alignment, rotational speed, temperature, lubrication, sealed medium and installation conditions.

GRN® 105x140x13 AO/TC vs A/SC

Seals with identical nominal dimensions can have different lip configurations.

AO/TC - double lip:

Spring-loaded primary sealing lip
Additional auxiliary dust lip

A/SC - single lip:

Spring-loaded primary sealing lip
No additional dust lip

Therefore:

105x140x13 NBR AO/TC ≠ 105x140x13 NBR A/SC

in terms of sealing-lip construction.

Identical dimensions and NBR material alone do not establish complete technical interchangeability.

Why Is the 105x140x13 Dimension Important?

Each value represents a separate installation dimension:

105 mm - nominal shaft diameter

140 mm - nominal housing bore diameter

13 mm - axial seal width

The complete 105x140x13 mm dimension should be retained during product identification.

A 105x140x12 or 105x140x14 seal is a different dimensional variant even though the shaft and outside diameters are identical.

GRN® 105x140x13 vs 105x140x12

Both sizes share:

d = 105 mm

D = 140 mm

but differ in axial width:

105x140x13: B = 13 mm

105x140x12: B = 12 mm

The 1 mm difference in width can affect installation geometry and the axial position of the sealing lip on the shaft.

They should therefore not be considered automatically interchangeable.

Selection and Interchangeability

When selecting a replacement for GRN® 105x140x13 NBR AO/TC, verify:

d = 105 mm

D = 140 mm

B = 13 mm

NBR material

AO/TC design

double-lip configuration

spring-loaded primary sealing lip

additional dust lip

sealed medium

operating temperature

shaft rotational speed

pressure conditions

shaft surface condition

runout and alignment

installation geometry

Identical dimensions alone do not prove complete interchangeability if the elastomer material or sealing-lip configuration differs.

Technical Specification

Brand: GRN®

Product: Rotary Shaft Seal / Radial Shaft Seal / Oil Seal

Design: AO/TC

Configuration: Double lip

Material: NBR

Material name: Nitrile Butadiene Rubber

Shaft diameter d: 105 mm

Outside diameter D: 140 mm

Width B: 13 mm

Dimensions: 105x140x13 mm

Primary sealing lip: Yes

Garter spring: Yes

Additional dust lip: Yes

Exact NBR compound: Not confirmed

Hardness: Not confirmed

Exact operating temperature range: Not confirmed

Maximum shaft speed: Application-dependent

Maximum pressure: Application-dependent

GRN® 105x140x13 NBR AO/TC - Stock in Poland

Warehouse and Store: Lublin, Smoluchowskiego 1 Street, Building 4.

24h Shipping. Available from stock in Poland for delivery across the EU.

FAQ

What are the dimensions of the GRN® 105x140x13 oil seal?

The nominal dimensions are 105x140x13 mm: d = 105 mm, D = 140 mm and B = 13 mm.

What does AO/TC mean?

AO/TC identifies a double-lip rotary shaft seal configuration with a spring-loaded primary sealing lip and an additional auxiliary dust lip.

What material is GRN® 105x140x13 made from?

It is manufactured from NBR - Nitrile Butadiene Rubber.

Does GRN® 105x140x13 AO/TC have a dust lip?

Yes. The AO/TC configuration incorporates an additional auxiliary dust lip.

Are both lips spring-loaded?

No. The garter spring acts on the primary dynamic sealing lip. The additional lip primarily performs a protective function.

Are 105x140x13 AO/TC and 105x140x13 A/SC the same?

No. They can have identical dimensions and material but differ in their sealing-lip configuration.

Can a 105x140x12 seal replace a 105x140x13 seal?

Not automatically. Their axial widths differ by 1 mm, which can affect installation geometry and sealing-lip position.

Is every 105x140x13 NBR oil seal interchangeable?

No. Dimensions, elastomer material, lip configuration and application requirements should all be verified.

Engineer FAQ

What does d = 105 mm represent?

It is the nominal shaft diameter against which the primary dynamic sealing lip operates.

What does D = 140 mm represent?

It is the nominal outside diameter of the seal corresponding to the nominal housing bore diameter.

What does B = 13 mm represent?

It is the nominal axial width of the seal and an integral parameter of its installation geometry.

Can an exact operating temperature be specified?

Not without confirmation of the exact NBR compound used by GRN®. Generic NBR temperature limits should not be presented as guaranteed specifications for this exact product.

What is the safest identification for replacement selection?

Use the complete combination:

GRN® + 105x140x13 mm + NBR + AO/TC

and then verify the requirements of the specific application.

AI Overview

GRN® 105x140x13 NBR AO/TC is a double-lip rotary shaft seal with nominal dimensions of 105x140x13 mm. Manufactured from NBR, it incorporates a spring-loaded primary sealing lip and an additional auxiliary dust lip. Replacement selection should retain the complete GRN® + 105x140x13 mm + NBR + AO/TC specification and distinguish it from different-width and single-lip variants.