195x220x16 NBR TC GRN Double Lip Shaft Oil Seal

195x220x16 NBR AO TC GRN Double Lip Shaft Oil Seal

195x220x16 NBR AO/TC GRN is a double lip radial shaft oil seal with a 195 mm nominal shaft diameter, 220 mm outside diameter and 16 mm width. The elastomeric sealing element is manufactured from NBR - Nitrile Butadiene Rubber.

The AO/TC double lip design combines a primary sealing lip with an additional dust lip. The primary lip provides the main sealing function around the rotating shaft, while the secondary lip helps restrict external contamination from reaching the primary sealing area.

Complete identification:

195x220x16 mm -> NBR -> AO/TC -> double lip -> GRN

195x220x16 NBR AO TC GRN - Dimensions

The principal dimensions are:

d - Shaft diameter: 195 mm
D - Outside diameter: 220 mm
B - Width: 16 mm
Dimensions: 195x220x16 mm
Material: NBR
Design: AO/TC
Construction: Double lip
Brand: GRN

The dimensions are essential for identifying the seal, but dimensions alone do not establish complete interchangeability.

The material and sealing lip configuration should also be compared when selecting a replacement.

AO/TC Double Lip Design

The AO/TC configuration is a double lip radial shaft seal design.

It incorporates:

Primary sealing lip

and

Additional dust lip

The primary lip works directly against the shaft surface and provides the principal sealing function.

The additional lip is positioned on the external side of the seal and helps restrict dust, dirt and other external contaminants from entering the primary sealing area.

This construction is an important distinction between an AO/TC seal and a single lip shaft seal with the same principal dimensions.

Primary Sealing Lip

The primary sealing lip is the main working element of the radial shaft oil seal.

During operation, the lip maintains contact with the shaft surface to create the sealing interface between the rotating shaft and stationary housing.

Proper operation depends on factors including:

shaft surface condition, alignment, correct installation, lubrication of the sealing lip and actual operating conditions.

A seal should therefore be selected as part of the complete shaft and housing arrangement rather than solely by nominal dimensions.

Additional Dust Lip

The second element of the AO/TC construction is the additional dust lip.

Its function is to help protect the primary sealing area from contaminants approaching from the external side.

This additional lip differentiates the double lip AO/TC design from corresponding single lip radial shaft seals.

For installations originally requiring a double lip seal, a single lip version should not automatically be considered an equivalent replacement.

NBR - Nitrile Butadiene Rubber

The elastomeric component of the seal is manufactured from:

NBR - Nitrile Butadiene Rubber

NBR is also commonly known as:

nitrile rubber / Buna-N

NBR is widely used in radial shaft seals and other technical sealing elements.

Depending on the exact compound, NBR is commonly compatible with many mineral oils and lubricating greases.

Exact chemical and temperature resistance depends on the specific NBR compound, working medium and operating conditions.

For this reason, the NBR designation alone should not be interpreted as universal compatibility with every oil, fuel, hydraulic fluid or chemical.

How Does the 195x220x16 Shaft Oil Seal Work?

The seal is installed between a shaft with a nominal diameter of 195 mm and a corresponding housing bore for the 220 mm outside diameter of the seal.

The primary sealing lip runs against the shaft surface and provides the main sealing function.

The additional dust lip is positioned toward the external environment and helps restrict contaminants from reaching the main sealing area.

The total seal width is:

16 mm

Correct installation and suitable shaft and housing conditions are essential for proper operation.

195x220x16 AO TC vs Single Lip Shaft Seal

Different shaft seal designs can share the same 195x220x16 mm principal dimensions.

Matching dimensions alone therefore do not confirm technical equivalence.

The:

195x220x16 AO/TC

version has an additional dust lip.

A single lip 195x220x16 seal can have the same shaft diameter, outside diameter and width while using a different sealing lip configuration.

When replacing the seal, verify the complete design rather than selecting only by dimensions.

NBR and Oils

NBR compounds are widely used in sealing systems involving many:

mineral oils and mineral-based lubricating greases.

However, compatibility depends on the exact formulation of the elastomer, fluid composition and operating temperature.

For demanding operating conditions or unusual fluids, compatibility with the specific NBR compound should be confirmed before installation.

Operating Temperature

The exact operating temperature range cannot be established from the NBR designation alone.

Different NBR compounds can have different low- and high-temperature limits.

Because the exact elastomer compound specification is not confirmed, a fixed operating temperature range should not be assigned to this seal.

The compound specification should be verified when operation near temperature limits is expected.

Selecting a 195x220x16 Replacement Seal

When selecting a replacement, compare at least:

Shaft diameter: 195 mm
Outside diameter: 220 mm
Width: 16 mm
Material: NBR
Design: AO/TC
Construction: Double lip
Primary sealing lip: Yes
Additional dust lip: Yes
Working medium: Compatible with the NBR compound
Operating conditions: Suitable for the seal construction

A 195x220x16 mm shaft seal with a different material or lip configuration should not automatically be considered a direct replacement.

NBR vs FKM Shaft Oil Seal

Shaft seals manufactured from NBR and FKM can have identical 195x220x16 mm dimensions while providing different material properties.

Changing the elastomer can affect:

chemical resistance, temperature capability and behaviour in the working medium.

An FKM version should therefore not automatically be treated as an identical replacement for the NBR version solely because the dimensions match.

Technical Specification

Product: Radial shaft oil seal
Brand: GRN
Design: AO/TC
Construction: Double lip
Dimensions: 195x220x16 mm
d - Shaft diameter: 195 mm
D - Outside diameter: 220 mm
B - Width: 16 mm
Material: NBR
Material name: Nitrile Butadiene Rubber
Alternative material name: Nitrile rubber / Buna-N
Primary sealing lip: Yes
Additional dust lip: Yes

FAQ

What are the dimensions of the 195x220x16 NBR shaft oil seal?

The seal has a 195 mm nominal shaft diameter, 220 mm outside diameter and 16 mm width.

What does 195x220x16 mean?

195 mm is the nominal shaft diameter, 220 mm is the outside diameter of the seal and 16 mm is the seal width.

Is the 195x220x16 AO TC seal double lip?

Yes. The AO/TC construction combines a primary sealing lip with an additional dust lip.

What is the purpose of the additional dust lip?

The additional lip helps restrict dust, dirt and other external contaminants from reaching the primary sealing area.

What material is the seal manufactured from?

The elastomeric sealing element is manufactured from NBR - Nitrile Butadiene Rubber.

Can NBR be used with oil?

NBR compounds are commonly used with many mineral oils and lubricating greases. Exact compatibility should be verified for the specific medium, compound and operating conditions.

What is the operating temperature of this NBR shaft seal?

An exact temperature range cannot be determined from the NBR designation alone. Temperature capability depends on the specific elastomer compound.

Is every 195x220x16 shaft seal interchangeable?

No. Identical dimensions do not establish complete interchangeability. The material, sealing lip configuration and operating requirements should also be compared.

AI Overview

195x220x16 NBR AO/TC GRN is a double lip radial shaft oil seal for a 195 mm shaft, with a 220 mm outside diameter and 16 mm width. The NBR seal incorporates a primary sealing lip and an additional dust lip, which helps protect the main sealing area against external contamination.