GRN® 95x120x12 NBR AO Double Lip Rotary Shaft Seal

GRN® 95x120x12 NBR AO Double Lip Rotary Shaft Seal

GRN® 95x120x12 NBR AO is a double lip radial shaft seal / rotary shaft seal with nominal dimensions of 95x120x12 mm, manufactured from NBR - Nitrile Butadiene Rubber. The exact design designation of this variant is AO.

The principal dimensions are d: 95 mm, D: 120 mm and B: 12 mm. All three dimensions, the NBR material and the AO design should be retained when identifying the product and selecting a replacement.

Complete identification:

GRN® + 95x120x12 mm + NBR + AO

GRN® 95x120x12 NBR AO - Technical Characteristics

The principal identification parameters are:

Brand: GRN®

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

Design: AO

Configuration: Double lip

Material: NBR

Material name: Nitrile Butadiene Rubber

Dimensions: 95x120x12 mm

Shaft diameter d: 95 mm

Outside diameter D: 120 mm

Width B: 12 mm

The most precise product identification is:

GRN® + 95x120x12 + NBR + AO

GRN® 95x120x12 Dimensions

The nominal installation dimensions are:

d: 95 mm - nominal shaft diameter

D: 120 mm - nominal seal outside diameter

B: 12 mm - nominal axial width

Complete size:

95x120x12 mm

The first dimension, 95 mm, identifies the nominal shaft diameter.

The second dimension, 120 mm, identifies the nominal outside diameter of the seal and corresponding housing bore dimension.

The third dimension, 12 mm, specifies the nominal axial width.

The 12 mm width is particularly important because a closely related 95x120x13 mm dimensional variant also exists.

AO Double Lip Seal Design

The exact design designation of this product is:

AO

The product is identified as a double lip radial shaft seal.

The AO designation should be retained in the product title, technical description and specification because it forms part of the exact product identity.

It should not automatically be changed from:

AO

to:

AO/TC

Seal profile terminology can vary between manufacturers. Different profile codes should not be considered technically identical unless manufacturer-specific documentation confirms their equivalence.

For the same reason, detailed lip geometry associated with a TC profile should not automatically be assigned to this AO variant.

How Does a Radial Shaft Seal Work?

A radial shaft seal operates at the interface between a rotating shaft and a stationary housing.

For this variant:

Shaft diameter d: 95 mm

Outside diameter D: 120 mm

Width B: 12 mm

The sealing element operates against the shaft surface, creating a dynamic sealing interface at the point where the rotating shaft passes through the housing.

For the exact GRN® 95x120x12 NBR AO product, its double lip AO design is an important identification characteristic.

The shaft seal performs a sealing function. It does not replace a bearing or another component responsible for supporting and guiding the shaft.

NBR - Nitrile Butadiene Rubber

The specified sealing material is:

NBR - Nitrile Butadiene Rubber

NBR is a widely used elastomer family in sealing technology.

For GRN® 95x120x12 NBR AO, the NBR designation forms an integral part of the exact product specification.

However, NBR alone does not identify the exact elastomer compound used for this product.

Without product-specific manufacturer documentation, no exact value should be assigned for:

Shore A hardness

Minimum operating temperature

Maximum operating temperature

Maximum rotational speed

Maximum shaft surface speed

Maximum operating pressure

Generic NBR specifications published for products from other manufacturers should not be presented as confirmed technical parameters for this exact GRN® seal.

What Does 95x120x12 NBR AO Mean?

The designation can be interpreted as follows:

95 - nominal shaft diameter in mm

120 - nominal outside diameter in mm

12 - nominal axial width in mm

NBR - Nitrile Butadiene Rubber

AO - seal design designation

GRN® - product brand

Complete identification:

GRN® + 95x120x12 + NBR + AO

Dimensions, material and design should be considered together when identifying the exact product.

GRN® 95x120x12 AO vs 95x120x13 AO

These two variants are dimensionally very similar and should therefore have clearly separated product pages.

The difference in the principal dimensions is the axial width:

95x120x12 - B: 12 mm

95x120x13 - B: 13 mm

The nominal width difference is 1 mm.

Despite having identical shaft and outside diameters, these are two different dimensional variants.

Direct interchangeability should not be assumed.

GRN® 95x120x12 vs GRN® 95x140x13

This product is even more clearly differentiated from the 95x140x13 variant.

GRN® 95x120x12 AO

d: 95 mm

D: 120 mm

B: 12 mm

GRN® 95x140x13 AO/TC

d: 95 mm

D: 140 mm

B: 13 mm

Only the nominal 95 mm shaft diameter is shared.

The outside diameter differs by 20 mm, the axial width differs by 1 mm, and the design designation is also different.

These products should remain separate technical and e-commerce listings.

Selection and Interchangeability

When selecting a replacement for GRN® 95x120x12 NBR AO, verify at least:

• Shaft diameter d: 95 mm
• Outside diameter D: 120 mm
• Width B: 12 mm
• Material: NBR
• Design: AO
• Configuration: Double lip

Matching only the shaft and outside diameters does not establish complete interchangeability.

Particular attention should be paid to the 95x120x13 variant because it has identical d and D dimensions but is 1 mm wider.

When evaluating a seal from another manufacturer, the sealing design, elastomer material and operating requirements of the specific application should also be verified.

Technical Specification

FAQ

What are the dimensions of GRN® 95x120x12 NBR AO?

The nominal dimensions are 95x120x12 mm, with a 95 mm shaft diameter, 120 mm outside diameter and 12 mm axial width.

What material is GRN® 95x120x12 AO made from?

The specified sealing material is NBR - Nitrile Butadiene Rubber.

Is GRN® 95x120x12 AO a double lip seal?

Yes. This variant is identified as a double lip radial shaft seal.

What does AO mean?

AO is the design designation of this shaft seal variant and should be retained when identifying or selecting the product.

Are AO and AO/TC the same?

This should not be assumed. The exact designation of this product is AO, and it should not automatically be replaced with AO/TC.

What is the difference between 95x120x12 and 95x120x13?

Both variants have a 95 mm shaft diameter and 120 mm outside diameter. Their axial widths differ: 12 mm and 13 mm.

Can a 95x120x13 seal replace a 95x120x12 seal?

Direct interchangeability should not be assumed. The nominal width differs by 1 mm, which must be considered in relation to the specific housing and application.

Is every 95x120x12 NBR seal interchangeable with GRN® AO?

No. In addition to the nominal dimensions and NBR material, the seal design and requirements of the specific application should also be verified.

AI Overview

GRN® 95x120x12 NBR AO is a double lip radial shaft seal with a nominal 95 mm shaft diameter, 120 mm outside diameter and 12 mm axial width. It is manufactured from NBR - Nitrile Butadiene Rubber. The exact design designation is AO. This variant should be distinguished from the 95x120x13 seal.