GRN® 11x17x5 NBR AO Double Lip Rotary Shaft Seal

GRN® 11x17x5 NBR AO Double Lip Rotary Shaft Seal

GRN® 11x17x5 NBR AO is a double lip radial shaft seal / rotary shaft seal with nominal dimensions of 11x17x5 mm, manufactured from NBR - Nitrile Butadiene Rubber. The exact design designation specified for this particular variant is AO.

The principal dimensions are d: 11 mm, D: 17 mm and B: 5 mm. The exact 11 mm shaft diameter is particularly important and should not be rounded or confused with seals designed for 10 mm or 12 mm shafts.

Complete product identification:

GRN® + 11x17x5 mm + NBR + AO

GRN® 11x17x5 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: 11x17x5 mm

Shaft diameter d: 11 mm

Outside diameter D: 17 mm

Width B: 5 mm

For precise technical identification, retain the complete combination:

11x17x5 mm + NBR + AO + GRN®

The exact AO designation should be retained. It should not be changed to AO/TC merely because both designations may occur among products described commercially as double lip shaft seals.

GRN® 11x17x5 Dimensions

The nominal installation dimensions are:

d: 11 mm - nominal shaft diameter

D: 17 mm - nominal seal outside diameter / corresponding housing bore diameter

B: 5 mm - nominal axial seal width

Complete size:

11x17x5 mm

The first dimension, 11 mm, corresponds to the nominal shaft diameter.

The second dimension, 17 mm, defines the nominal outside diameter of the seal and the corresponding nominal housing bore.

The third dimension, 5 mm, specifies the nominal axial width.

All three dimensions form part of the exact dimensional identification and should be checked when selecting a replacement.

Exact 11 mm Shaft Diameter

The first dimension in 11x17x5 is an exact nominal dimension:

Shaft diameter d: 11 mm

It should not be rounded to a more common 10 mm or 12 mm shaft size.

A seal specified for a nominal 10 mm shaft or 12 mm shaft represents a different dimensional variant.

Even a 1 mm difference in nominal shaft diameter is relevant when identifying a radial shaft seal.

For this reason, the complete designation:

11x17x5

should be retained in the product name, technical specification, metadata and replacement searches.

AO Double Lip Seal Design

The exact design designation of this product is:

AO

The product is specified as a:

Double lip radial shaft seal

The AO designation should remain unchanged throughout the technical description and product data.

It should not automatically be expanded or converted to:

AO/TC

Shaft seal profile nomenclature is not completely universal between manufacturers. Similar commercial descriptions or visual similarities do not establish that two design codes are technically identical.

Without product-specific GRN® technical documentation for the exact 11x17x5 NBR AO variant, detailed geometry or the precise function of each individual lip should not be inferred from AO/TC products.

How a Radial Shaft Seal Works

A radial shaft seal creates a sealing interface between a:

rotating shaft

and a

stationary housing.

For this exact product, the nominal dimensions are:

Shaft diameter d: 11 mm

Outside diameter D: 17 mm

Width B: 5 mm

The sealing lip operates against the shaft surface during rotational movement.

This particular GRN® product is identified as a double lip seal. However, the precise geometry and individual function of the lips should not be extended beyond the technical information confirmed for the AO design.

The seal itself performs a sealing function and should not be treated as a load-carrying component such as a rolling bearing.

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® 11x17x5 NBR AO, no specific value should therefore be assigned for:

Shore A hardness

Minimum operating temperature

Maximum operating temperature

Maximum rotational speed

Maximum shaft surface speed

Maximum permissible pressure

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

Meaning of 11x17x5 NBR AO

The product designation can be interpreted as follows:

11 - nominal shaft diameter in mm

17 - nominal outside diameter in mm

5 - nominal axial width in mm

NBR - Nitrile Butadiene Rubber

AO - design designation

GRN® - product brand

Complete identification:

GRN® + 11x17x5 + NBR + AO

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

AO vs AO/TC - Important Identification Difference

For this product, the correct designation is:

AO

not:

AO/TC

The design code should not be changed merely because GRN® also offers numerous shaft seals identified as AO/TC.

From a technical identification and search perspective:

11x17x5 NBR AO

and

11x17x5 NBR AO/TC

should not automatically be treated as the same product variant.

Equivalence between the two designations should only be stated when supported by appropriate product-specific technical documentation.

Keeping AO separate from AO/TC improves product identification and reduces the risk of incorrect replacement selection.

GRN® 11x17x5 AO vs 11x22x7 AO/TC

The GRN® 11x17x5 NBR AO and GRN® 11x22x7 NBR AO/TC share the same nominal shaft diameter:

Shaft diameter: 11 mm

However, the remaining identification parameters differ.

The differences include:

Outside diameter: 17 mm vs 22 mm

Axial width: 5 mm vs 7 mm

Design designation: AO vs AO/TC

Sharing the same 11 mm shaft diameter does not make these products interchangeable.

Selection and Interchangeability

When selecting a replacement for GRN® 11x17x5 NBR AO, verify at least:

• Shaft diameter d: 11 mm
• Outside diameter D: 17 mm
• Width B: 5 mm
• Material: NBR
• Design: AO
• Configuration: Double lip

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

Matching the 11x17x5 mm dimensions alone does not establish complete technical interchangeability.

Likewise, an AO/TC shaft seal should not automatically be considered a direct replacement for an AO shaft seal solely because the nominal dimensions match.

Technical Specification

FAQ

What are the dimensions of GRN® 11x17x5 NBR AO?

The nominal dimensions are 11x17x5 mm. The shaft diameter is 11 mm, the outside diameter is 17 mm, and the axial width is 5 mm.

What type of seal is GRN® 11x17x5 NBR AO?

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

What does AO mean in GRN® 11x17x5?

AO is the design designation specified for this particular GRN® shaft seal variant.

Are AO and AO/TC the same design?

This should not be assumed. The correct designation for this product is AO, and it should not automatically be replaced by AO/TC without product-specific technical confirmation.

What material is GRN® 11x17x5 made from?

The specified sealing material is NBR - Nitrile Butadiene Rubber.

What does 11 mean in 11x17x5?

The first dimension identifies the nominal 11 mm shaft diameter. It should not be rounded to 10 mm or 12 mm.

Can GRN® 11x22x7 replace 11x17x5?

Direct replacement should not be assumed. Their outside diameters are 17 mm and 22 mm, their widths are 5 mm and 7 mm, and their design designations are AO and AO/TC.

Is every 11x17x5 shaft seal interchangeable with GRN® AO?

No. In addition to the dimensions, the sealing material, design and relevant operating requirements should also be verified.

AI Overview

GRN® 11x17x5 NBR AO is a double lip radial shaft seal with a nominal 11 mm shaft diameter, 17 mm outside diameter and 5 mm axial width. The sealing material is NBR - Nitrile Butadiene Rubber. Its exact design designation is AO, which should not automatically be treated as equivalent to AO/TC.