95x125x12 NBR AO GRN® is a double-lip radial shaft oil seal for a 95 mm shaft and 125 mm housing bore, with a width of 12 mm. The AO design combines a spring-loaded primary sealing lip with an additional dust lip that helps protect the primary sealing area against external contamination. Manufactured from NBR nitrile rubber, it is widely used with compatible mineral oils and lubricating greases. For correct replacement selection, verify the complete specification: 95x125x12 mm + NBR + AO double-lip design.
95x125x12 NBR AO GRN® is a double-lip radial shaft oil seal measuring 95x125x12 mm.
The AO design combines a primary sealing lip operating against the rotating shaft with an additional dust lip. The primary lip is supported by a garter spring that helps maintain sealing contact with the shaft surface.
d - Shaft diameter: 95 mm
D - Housing bore diameter: 125 mm
B - Width: 12 mm
Dimensions: 95x125x12 mm
Material: NBR - Nitrile Butadiene Rubber
Design: AO
Configuration: Double lip
Primary sealing lip: Spring-loaded
Additional lip: Dust lip
Brand: GRN®
The designation 95x125x12 mm defines the three principal installation dimensions:
95 mm - nominal shaft diameter
125 mm - nominal housing bore diameter
12 mm - seal width
All three dimensions should be verified when selecting a replacement shaft seal.
The AO design uses two lips with different functions.
The primary sealing lip operates directly against the rotating shaft and provides the main sealing function. It is supported by a garter spring.
The additional dust lip provides a secondary barrier between the external environment and the primary sealing area.
It helps reduce the entry of dust, dirt and other external contaminants into the contact area between the primary sealing lip and shaft.
The primary sealing lip is supported by a garter spring.
The spring helps maintain radial contact between the elastomer sealing edge and the rotating shaft surface.
The principal sealing interface therefore consists of:
primary sealing lip + garter spring + shaft counterface
The condition of the shaft surface is therefore an important factor in the performance and service life of the seal.
The seal is manufactured from NBR - Nitrile Butadiene Rubber.
NBR is one of the most widely used elastomers for radial shaft oil seals because of its compatibility with many:
mineral oils,
lubricating greases,
industrial lubricants.
Material compatibility should always be verified against the specific medium, additives, temperature and actual operating conditions.
NBR should not be assumed to be resistant to every oil, chemical or fluid.
The primary sealing lip operates directly against the rotating shaft.
Contamination reaching this contact area can affect wear and sealing performance.
The additional lip of the AO design helps reduce the amount of:
dust,
dirt,
small particles,
external contamination
reaching the primary sealing area.
This additional protective function is the principal difference between a double-lip AO design and a corresponding single-lip shaft seal.
Two oil seals can have identical 95x125x12 mm dimensions but different sealing configurations.
AO double lip: spring-loaded primary sealing lip + additional dust lip
Single-lip design: primary sealing lip without the additional dust lip
For this reason, dimensions alone should not be used to determine full interchangeability.
If the original application requires an AO double-lip design, a single-lip seal should not automatically be considered an equivalent replacement.
A radial shaft oil seal operates between a rotating shaft and stationary housing.
Its principal functions are to:
retain oil or grease on the required side of the seal,
reduce lubricant leakage along the rotating shaft,
help protect the primary sealing area against external contamination.
Actual suitability depends on the medium, operating temperature, shaft speed, pressure, shaft surface condition and installation geometry.
When replacing a 95x125x12 radial shaft seal, the shaft surface should be inspected carefully.
Check the sealing track for:
wear grooves,
scratches,
corrosion,
mechanical damage,
surface contamination.
A new oil seal installed on a worn or damaged shaft surface may still leak because the primary sealing lip requires a suitable counterface to operate correctly.
Complete product identification:
GRN® -> 95x125x12 mm -> NBR -> AO -> Double Lip
Before selecting a replacement, verify:
Shaft diameter: 95 mm
Housing bore diameter: 125 mm
Width: 12 mm
Material: NBR
Design: AO
Configuration: Double lip
Operating medium: compatible with NBR
Matching 95x125x12 mm dimensions alone does not guarantee full interchangeability.
Seals with identical dimensions can differ in elastomer material and sealing lip configuration.
Brand: GRN®
Product type: Radial shaft oil seal
Dimensions: 95x125x12 mm
Shaft diameter: 95 mm
Housing bore diameter: 125 mm
Width: 12 mm
Material: NBR - Nitrile Butadiene Rubber
Design: AO
Configuration: Double lip
Primary sealing lip: Spring-loaded
Garter spring: Yes
Additional dust lip: Yes
The seal is designed for a 95 mm shaft and 125 mm housing bore, with a width of 12 mm.
Yes. The AO design combines a primary sealing lip with an additional dust lip.
Yes. The primary sealing lip is supported by a garter spring that helps maintain sealing contact with the shaft.
The seal is manufactured from NBR - Nitrile Butadiene Rubber.
NBR is widely used with many mineral oils and lubricating greases. Compatibility should always be verified for the specific medium and operating conditions.
The additional lip helps protect the primary sealing area against dust, dirt and other external contaminants.
Not automatically. The AO design includes an additional dust lip, so the required sealing configuration should be verified before replacement.
No. Oil seals with identical dimensions can differ in material, sealing lip configuration and design.
95x125x12 NBR AO GRN® is a double-lip radial shaft oil seal for a 95 mm shaft and 125 mm housing bore, with a width of 12 mm. The AO design combines a spring-loaded primary sealing lip with an additional dust lip that helps protect the primary sealing area against external contamination. The seal is manufactured from NBR nitrile rubber, widely used with compatible mineral oils and lubricating greases. Complete identification: GRN® + 95x125x12 mm + NBR + AO double-lip design.
Data sheet
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95x125x12 NBR AO GRN® is a double-lip radial shaft oil seal for a 95 mm shaft and 125 mm housing bore, with a width of 12 mm. The AO design combines a spring-loaded primary sealing lip with an additional dust lip that helps protect the primary sealing area against external contamination. Manufactured from NBR nitrile rubber, it is widely used with compatible mineral oils and lubricating greases. For correct replacement selection, verify the complete specification: 95x125x12 mm + NBR + AO double-lip design.
