Address: ul. Smoluchowskiego 1, building 4
Delivery: 24h
Service Area: Poland and EU countries
40x62x10 NBR AO/TC Oil Seal is a double lip radial shaft seal designed for a 40 mm shaft, 62 mm housing bore and 10 mm installation width. Its spring-loaded primary lip helps retain oil or grease, while the auxiliary dust lip helps protect the main sealing interface against external contamination. NBR provides good resistance to many mineral oils and lubricating greases, making the seal suitable for numerous industrial rotating shaft applications.
40x62x10 NBR AO/TC Oil Seal is a double lip radial shaft seal designed for a 40 mm shaft, 62 mm housing bore and 10 mm installation width. The AO/TC configuration combines a spring-loaded primary sealing lip with an auxiliary dust lip. The primary lip helps retain oil or grease inside the assembly, while the secondary lip helps protect the main sealing interface against dust, dirt and external contamination. NBR nitrile rubber provides good resistance to many mineral oils and lubricating greases.
Product Type: Radial shaft seal / oil seal / Simmerring
Design: AO / TC
Lip Design: Double lip
Dimensions: 40x62x10 mm
Material: NBR - Nitrile Butadiene Rubber
Shaft Diameter d: 40 mm
Housing Bore D: 62 mm
Width B: 10 mm
Primary Sealing Lip: Yes
Auxiliary Dust Lip: Yes
Garter Spring: Yes
Outside Diameter: Rubber covered
Typical Temperature Range: approximately -30 to +100°C, depending on NBR compound, medium and operating conditions
Application: Dynamic sealing of rotating shafts
The AO/TC configuration incorporates two functional lips with separate sealing and protective functions.
The primary sealing lip operates directly against the rotating shaft. A garter spring supports radial contact between the sealing edge and shaft surface, helping retain lubricant inside the mechanical assembly.
The auxiliary dust lip is positioned toward the external environment. It provides an additional barrier against dust, dirt and other contaminants that could otherwise reach the primary sealing interface.
This construction is particularly useful where both lubricant retention and additional contamination protection are required.
The principal installation dimensions are:
d: 40 mm
D: 62 mm
B: 10 mm
The oil seal is therefore designed for a 40 mm nominal shaft diameter, 62 mm housing bore and 10 mm installation width.
All three dimensions should be verified when selecting a replacement.
An oil seal with the same 40x62x10 dimensions but a different material or lip configuration should not automatically be considered functionally equivalent.
NBR, also known as Buna-N, is one of the most widely used elastomers in industrial sealing technology.
It provides good resistance to many:
These characteristics make NBR suitable for numerous general-purpose rotary shaft sealing applications.
Final compatibility depends on the specific fluid, additives, temperature and actual operating conditions.
A radial shaft seal creates a dynamic sealing interface between a rotating shaft and stationary housing.
The spring-loaded primary lip remains in controlled contact with the 40 mm shaft surface. Its main function is to help retain lubricant and reduce leakage along the rotating shaft.
Effective sealing also depends on:
A worn, scratched or corroded shaft surface can reduce sealing performance even when the correct new oil seal has been installed.
The secondary lip provides additional protection on the atmospheric side of the seal.
It helps reduce the ingress of:
toward the primary sealing zone.
This makes the AO/TC configuration useful in machinery where the exposed section of the shaft may be subject to normal industrial or workshop contamination.
Radial shaft seals are commonly used at points where rotating shafts pass through gearbox and reducer housings.
In an appropriately designed gearbox, the 40x62x10 NBR AO/TC oil seal can help retain lubricant inside the housing while allowing the 40 mm shaft to rotate.
The auxiliary dust lip provides an additional protective barrier on the external side of the sealing arrangement.
Correct shaft condition and alignment are particularly important in continuously rotating drive applications.
The 40x62x10 NBR AO/TC double lip oil seal can be used in appropriately designed:
The final application should always be evaluated according to operating speed, temperature, pressure, lubricant and environmental conditions.
The main difference between an AO/TC double lip seal and a typical single lip oil seal is the additional dust protection lip.
A single lip design primarily performs the lubricant retention function.
The AO/TC configuration adds a second barrier between the external environment and the primary sealing interface.
A single lip 40x62x10 seal should therefore not automatically be used as a replacement where a double lip AO/TC configuration is specified.
Before selecting a replacement, verify:
Shaft Diameter: 40 mm
Housing Bore: 62 mm
Width: 10 mm
Material: NBR
Design: AO / TC
Lip Configuration: Double lip
Primary Lip: Spring-loaded
Auxiliary Dust Lip: Yes
Operating Medium: Compatible with NBR
Operating Temperature: Suitable for the specific NBR compound
Shaft Speed: Appropriate for the application
Correct selection requires more than simply matching the nominal dimensions.
Before installing a new 40x62x10 rotary shaft seal, inspect the shaft contact area for:
Care should also be taken when passing the sealing lip over threads, splines, keyways or sharp shaft edges.
Damage to the sealing edge during installation can result in premature leakage.
Double lip AO/TC construction: combines lubricant retention with additional contamination protection.
NBR material: provides good resistance to many mineral oils and lubricating greases.
Spring-loaded primary lip: supports controlled contact between the sealing edge and rotating shaft.
Auxiliary dust lip: helps protect the primary sealing zone against external contaminants.
40x62x10 mm dimensions: provide clearly defined installation geometry for replacement identification.
Industrial versatility: suitable for many appropriately designed gearboxes, pumps, drives and rotating mechanical assemblies.
40x62x10 oil seal
40x62x10 NBR oil seal
40x62x10 AO/TC oil seal
40x62x10 TC oil seal
40x62x10 AO oil seal
40x62x10 double lip oil seal
40 mm shaft oil seal
Rotary shaft seal 40x62x10
Simmerring 40x62x10
NBR shaft seal 40x62x10
Double lip shaft seal 40x62x10
Gearbox oil seal 40x62x10
Oil seal 40 62 10
What are the dimensions of the 40x62x10 oil seal?
The seal is designed for a 40 mm shaft and 62 mm housing bore, with an installation width of 10 mm.
Is the 40x62x10 AO/TC oil seal double lip?
Yes. It has a spring-loaded primary sealing lip and an auxiliary dust protection lip.
What is the purpose of the auxiliary lip?
The auxiliary lip helps reduce the ingress of dust, dirt and other external contaminants toward the primary sealing interface.
Is NBR suitable for gearbox oil?
NBR is compatible with many mineral-based gear oils and lubricating greases. Compatibility should still be verified for the specific lubricant, additives and operating temperature.
Is this oil seal designed for a 40 mm shaft?
Yes. The first dimension in 40x62x10 identifies the nominal shaft diameter of 40 mm.
Does the primary sealing lip have a spring?
Yes. A garter spring supports the primary sealing lip and helps maintain controlled contact with the rotating shaft.
Can a single lip 40x62x10 seal replace the AO/TC version?
Not automatically. A single lip seal does not provide the same auxiliary dust protection as the AO/TC double lip configuration.
Are all 40x62x10 oil seals interchangeable?
No. Products with identical dimensions may differ in material, lip design, construction and intended operating conditions.
Is the 40x62x10 dimension sufficient to select a replacement seal?
No. Material, lip configuration, operating medium, temperature, shaft speed and application conditions should also be verified.
Which lip retains the lubricant?
The spring-loaded primary lip performs the main lubricant retention function. The auxiliary lip primarily provides protection against external contamination.
What should be inspected before installing a new oil seal?
Check the shaft sealing surface for wear grooves, scratches, corrosion and other damage. The housing bore should also be clean and suitable for correct installation.
Why can a new oil seal leak on a worn shaft?
The sealing lip requires a suitable contact surface. A wear groove, corrosion or surface damage can prevent the lip from maintaining an effective sealing interface.
Can NBR be used with every oil?
No. NBR is compatible with many mineral oils and greases, but chemical compatibility should be verified for the specific fluid and operating temperature.
Data sheet
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Address: ul. Smoluchowskiego 1, building 4
Delivery: 24h
Service Area: Poland and EU countries
40x62x10 NBR AO/TC Oil Seal is a double lip radial shaft seal designed for a 40 mm shaft, 62 mm housing bore and 10 mm installation width. Its spring-loaded primary lip helps retain oil or grease, while the auxiliary dust lip helps protect the main sealing interface against external contamination. NBR provides good resistance to many mineral oils and lubricating greases, making the seal suitable for numerous industrial rotating shaft applications.
