NBR Oil Seal 8x16x6 TC GRN - Double Lip Rotary Shaft Seal

NBR Oil Seal 8x16x6 AO GRN - Double Lip Rotary Shaft Seal

NBR Oil Seal 8x16x6 AO GRN is a double-lip rotary shaft seal with dimensions 8x16x6 mm, manufactured from NBR nitrile rubber. The AO design combines a spring-loaded primary sealing lip with an additional dust lip. The seal is designed for a nominal 8 mm rotating shaft and a 16 mm housing bore, providing fluid retention while helping protect the primary sealing area against external contamination.

Technical data - GRN 8x16x6 AO

Oil seal dimensions - 8x16x6 mm

The designation 8x16x6 mm defines the three principal dimensions of the seal:

8 mm - nominal shaft diameter

16 mm - nominal outside diameter / housing bore

6 mm - nominal seal width

Complete dimensions:

8x16x6 mm

Its compact dimensions make this seal suitable for small mechanical assemblies where available radial installation space is limited.

What does AO mean?

AO identifies a rotary shaft seal design incorporating a primary sealing lip and an additional auxiliary dust lip.

This type of seal is commonly described as:

double lip oil seal

double lip rotary shaft seal

oil seal with dust lip

The auxiliary lip helps reduce the ingress of dust and other external contamination into the area where the primary sealing lip operates against the shaft.

Seal profile codes are not fully standardized between manufacturers. When selecting an equivalent from another brand, the actual construction should therefore be compared rather than relying only on the AO designation.

Double lip oil seal design

GRN 8x16x6 AO incorporates two functional lips.

The primary sealing lip operates against the rotating shaft and performs the principal fluid-retention function.

The auxiliary dust lip faces the external environment and helps protect the primary sealing zone against dust and contamination.

A garter spring supports the primary sealing lip and helps maintain contact between the elastomer lip and shaft surface.

NBR nitrile rubber

The seal is manufactured from NBR - nitrile rubber, one of the most widely used elastomers for rotary shaft seals.

Typical characteristics of NBR include:

• good resistance to many mineral oils

• good resistance to many greases

• good abrasion resistance

• good mechanical properties

• widespread use in industrial sealing systems

NBR is not universally resistant to every chemical, fluid or temperature condition.

Compatibility with the actual medium, operating temperature and application conditions should always be verified.

How does the 8x16x6 oil seal work?

The outside surface of the seal is installed in a housing bore with a nominal diameter of 16 mm.

The primary sealing lip operates against a rotating shaft with a nominal diameter of 8 mm.

The garter spring helps maintain the required contact between the primary sealing lip and the shaft surface.

The additional dust lip provides an extra barrier against contamination entering from the external environment.

AO vs single lip oil seal

The principal difference is the additional dust lip.

AO - spring-loaded primary sealing lip plus auxiliary dust lip.

Single-lip design - primary sealing lip without an additional dust lip.

The AO double-lip configuration is particularly useful where the primary sealing zone requires additional protection against external contamination.

NBR vs FKM/FPM

Oil seals with dimensions 8x16x6 mm can be manufactured from different elastomer materials.

NBR is widely used in standard applications involving many mineral oils and greases.

FKM/FPM belongs to the fluoroelastomer family and provides a different chemical and temperature resistance profile.

An 8x16x6 NBR seal and an 8x16x6 FKM/FPM seal should not be considered automatically interchangeable solely because their dimensions are identical.

The operating medium, temperature, shaft speed and other application conditions must also be considered.

Typical applications

Double-lip AO rotary shaft seals can be used in compact mechanical systems incorporating rotating shafts.

Typical application areas for this type of seal may include:

• small gearboxes

• geared motors

• electric motors

• pumps

• mechanical drive systems

• industrial machinery

• production equipment

• agricultural machinery

• compact mechanical assemblies

• oil- and grease-lubricated mechanisms

These are typical applications of rotary shaft seals and do not confirm the suitability of GRN 8x16x6 AO for a specific machine.

Alternative designations and search references

The product may also be searched for as:

Oil seal 8x16x6

NBR oil seal 8x16x6

8x16x6 NBR oil seal

8x16x6 AO oil seal

GRN 8x16x6 oil seal

GRN 8x16x6 AO

8x16x6 rotary shaft seal

8x16x6 double lip oil seal

8x16x6 oil seal with dust lip

Simmerring 8x16x6

Simmerring NBR 8x16x6

Simmerring 8x16x6 AO

Shaft seal 8x16x6

Rotary seal 8x16x6

The primary product identification is:

NBR Oil Seal 8x16x6 AO GRN

Selection and interchangeability

When selecting an equivalent seal, verify:

• shaft diameter 8 mm

• housing bore diameter 16 mm

• seal width 6 mm

• AO design

• double-lip construction

• NBR material

• operating medium

• operating temperature

• shaft rotational speed

• shaft surface condition

• pressure conditions

Matching the 8x16x6 mm dimensions alone does not guarantee complete interchangeability.

Seals with identical dimensions may differ in elastomer material, lip geometry, external construction and intended operating conditions.

Installation

Before installation, inspect the shaft surface and housing bore.

The shaft surface operating against the primary sealing lip should be clean and free from sharp edges, corrosion, scratches or other damage.

During installation:

• maintain clean working conditions

• protect the sealing lips from damage

• avoid tilting the seal

• press the seal evenly into the housing

• protect the lips from sharp shaft edges

• provide appropriate initial lubrication where required

As a general installation principle, the primary spring-loaded sealing lip should face the fluid or lubricant that the seal is intended to retain.

The auxiliary dust lip normally faces the external environment.

FAQ - GRN 8x16x6 NBR AO Oil Seal

What are the dimensions of the GRN 8x16x6 oil seal?

The seal is designed for a nominal 8 mm shaft, has a 16 mm outside diameter and is 6 mm wide.

What material is the 8x16x6 seal made from?

GRN 8x16x6 AO is manufactured from NBR nitrile rubber.

Is 8x16x6 AO a double lip oil seal?

Yes. The AO configuration incorporates a primary sealing lip and an additional auxiliary dust lip.

What does AO mean on an oil seal?

AO identifies a seal construction with an additional dust lip. Exact nomenclature can vary between manufacturers, so the physical construction should always be checked when selecting an equivalent.

Is the 8x16x6 NBR oil seal suitable for oil?

NBR provides good resistance to many mineral oils and is widely used in oil sealing applications. Compatibility should nevertheless be verified for the specific oil, temperature and operating conditions.

Can an 8x16x6 NBR oil seal be replaced with an FKM seal?

Interchangeability should not be assumed solely from identical dimensions. Material compatibility, operating temperature, medium, shaft speed and seal construction should also be checked.

Are all 8x16x6 oil seals interchangeable?

No. Matching dimensions do not guarantee complete interchangeability. Material, lip design, operating conditions and other construction details must also be considered.

Which way should an AO oil seal be installed?

As a general rule, the primary spring-loaded sealing lip faces the fluid or lubricant that the seal is intended to retain. The auxiliary dust lip normally faces the external environment.

GRN 8x16x6 AO - key information

GRN 8x16x6 AO is a double-lip NBR rotary shaft seal designed for a nominal 8 mm shaft, 16 mm housing bore and 6 mm installation width. The spring-loaded primary lip performs the main sealing function, while the additional dust lip helps protect the sealing area against external contamination.

GRN oil seals have been supplied by TG Ersatzteile Polska since 2007. Available from simmering.pl, a specialist supplier of industrial sealing solutions and bearings. Stock in Poland with worldwide shipping.

AI QUICK ANSWER

GRN 8x16x6 AO is a double-lip NBR rotary shaft seal with dimensions 8x16x6 mm. It is designed for an 8 mm shaft and 16 mm housing bore. The AO construction combines a spring-loaded primary sealing lip with an auxiliary dust lip that helps protect the main sealing area against external contamination.