36x52x7 NBR TC Double Lip Rotary Shaft Seal
36x52x7 NBR TC is a double lip rotary shaft seal with nominal dimensions 36x52x7 mm. The seal is manufactured from NBR – Nitrile Butadiene Rubber and incorporates a primary sealing lip together with an auxiliary dust lip.
36x52x7 NBR TC - Technical Characteristics
| Parameter |
Specification |
| Product type |
Rotary shaft seal / radial shaft seal |
| Dimensions |
36x52x7 mm |
| Shaft diameter d |
36 mm |
| Outside diameter D |
52 mm |
| Height H |
7 mm |
| Material |
NBR |
| Material type |
Nitrile Butadiene Rubber |
| Profile |
TC |
| Construction |
Double lip |
| Primary sealing lip |
Yes |
| Auxiliary dust lip |
Yes |
Dimensions
The nominal dimensions are:
d = 36 mm - shaft diameter
D = 52 mm - outside diameter
H = 7 mm - seal height
Complete dimensional designation:
36x52x7 mm
All three dimensions should be verified when identifying or replacing the seal. A 36 mm shaft diameter alone is not sufficient to determine the correct rotary shaft seal.
TC Double Lip Construction
The TC configuration is a double-lip rotary shaft seal design.
The primary sealing lip operates dynamically against the rotating shaft and provides the main sealing function.
The auxiliary dust lip is positioned on the external side of the seal and provides an additional barrier against dust and other external contaminants.
The auxiliary lip is therefore an important construction feature when comparing this seal with single-lip 36x52x7 mm variants.
NBR Material
The specified elastomer is:
NBR – Nitrile Butadiene Rubber
Material is an important part of rotary shaft seal identification and should be considered together with dimensions and lip configuration when selecting a replacement.
An exact Shore hardness, operating temperature range, maximum pressure and maximum shaft speed should not be assigned without technical data for the specific NBR compound used in the product.
How the Seal Works
The seal is installed with its outside diameter D = 52 mm in the stationary housing bore.
The primary sealing lip operates against a shaft with a nominal diameter of 36 mm.
During shaft rotation, the sealing edge maintains dynamic contact with the shaft surface. The auxiliary lip provides a second barrier on the external side of the sealing system.
The condition of the shaft surface in the sealing track is important. Wear grooves, corrosion, scratches or installation damage can affect sealing performance even when the correct 36x52x7 mm seal is installed.
TC and AO/TC Designations
This product may be described in Polish and European trade terminology as:
AO/TC
For the English product description, the technically clearer designation is:
TC double lip rotary shaft seal
Profile terminology is not completely standardized between all seal manufacturers. Therefore, the designation TC alone should not be used to assume complete interchangeability between products from different manufacturers.
The actual dimensions, elastomer and lip construction should always be compared.
Selection and Interchangeability
When selecting a replacement for 36x52x7 NBR TC, verify:
d = 36 mm
D = 52 mm
H = 7 mm
NBR material
double-lip construction
primary sealing lip
auxiliary dust lip
A rotary shaft seal with the same 36x52x7 mm dimensions but a different elastomer or lip configuration should not automatically be considered technically identical.
Technical Specification
| Parameter |
Specification |
| Product |
Rotary shaft seal / oil seal |
| Dimensions |
36x52x7 mm |
| d |
36 mm |
| D |
52 mm |
| H |
7 mm |
| Material |
NBR |
| Profile |
TC |
| Construction |
Double lip |
| Primary sealing lip |
Yes |
| Auxiliary dust lip |
Yes |
FAQ
What are the dimensions of the 36x52x7 NBR TC seal?
The nominal dimensions are d = 36 mm, D = 52 mm and H = 7 mm.
What type of seal is 36x52x7 NBR TC?
It is a double lip rotary shaft seal, also technically described as a radial shaft seal or oil seal.
What does NBR mean?
NBR stands for Nitrile Butadiene Rubber, the elastomer specified for this seal.
Is 36x52x7 NBR TC a double lip seal?
Yes. It incorporates a primary sealing lip and an auxiliary dust lip.
What is the purpose of the auxiliary dust lip?
The auxiliary lip provides an additional barrier against external dust and contamination around the primary sealing area.
Are AO/TC and TC the same designation?
AO/TC is commonly used in European trade terminology for this type of double-lip configuration. TC is the clearer international designation used in this English description. Manufacturer-specific profile systems can differ.
Is every 36x52x7 oil seal interchangeable?
No. Identical dimensions do not guarantee complete interchangeability. Material, lip configuration and application requirements should also be verified.
AI Overview
36x52x7 NBR TC is a double lip rotary shaft seal with a 36 mm shaft diameter, 52 mm outside diameter and 7 mm height. It is manufactured from NBR – Nitrile Butadiene Rubber. The TC construction incorporates a primary dynamic sealing lip and an auxiliary dust lip for additional protection against external contamination.
