GRN® 48x72x8 NBR TC is a double lip rotary shaft seal with dimensions d: 48 mm, D: 72 mm, B: 8 mm. Material: NBR. The TC double lip design incorporates a spring-loaded primary sealing lip and an auxiliary dust lip. For correct identification, consider the complete 48x72x8 mm dimensions, NBR material and TC construction. Rotation direction is not confirmed.
Warehouse and Store: Lublin, Smoluchowskiego 1 Street, Building 4.
24h Shipping. Available from stock in Poland for delivery across the EU.
GRN® 48x72x8 NBR TC is a double lip rotary shaft seal designed for sealing the interface between a rotating shaft and a stationary housing. Its nominal dimensions are 48x72x8 mm, and the sealing element is manufactured from NBR.
The TC construction incorporates a spring-loaded primary sealing lip and an auxiliary dust lip.
Complete product identification:
GRN® + 48x72x8 + NBR + TC + Double Lip Rotary Shaft Seal
| Parameter | Specification |
|---|---|
| Brand | GRN® |
| Product type | Rotary shaft seal / radial shaft seal |
| Design | Double lip |
| Dimensions | 48x72x8 mm |
| Shaft diameter d | 48 mm |
| Outside diameter D | 72 mm |
| Width B | 8 mm |
| Material | NBR |
| Profile | TC |
| Spring-loaded primary lip | Yes |
| Auxiliary dust lip | Yes |
| Rotation direction | Not confirmed |
The nominal dimensions are:
d: 48 mm – shaft diameter
D: 72 mm – outside diameter / nominal housing bore
B: 8 mm – seal width
Complete dimensional designation:
48x72x8 mm
All three dimensions should be checked during product identification and replacement selection.
The 48 mm shaft diameter alone is not sufficient to identify the correct rotary shaft seal.
In the international product designation, this GRN® seal uses the profile:
TC
The TC construction incorporates two functional lips:
Primary sealing lip – operates against the rotating shaft and is supported by a garter spring.
Auxiliary dust lip – provides an additional barrier on the external side of the primary sealing area.
This double lip configuration helps protect the primary sealing zone from dust and other external contaminants.
For international SEO and technical identification, the preferred designation is:
GRN® 48x72x8 NBR TC
rather than the Polish-market AO/TC notation.
The primary function of the seal is to control leakage between a rotating shaft and stationary housing.
The main sealing lip remains in contact with the shaft surface, while the garter spring supports the radial contact force of the sealing lip.
The auxiliary lip operates on the external side of the primary sealing area and provides additional protection against contamination.
This distinguishes the TC double lip design from simpler single-lip rotary shaft seals.
The sealing element is manufactured from:
NBR – Nitrile Butadiene Rubber.
NBR is widely used as an elastomer material in industrial sealing applications.
However, the generic NBR designation does not identify the exact compound formulation used for this specific GRN® product.
Therefore, without exact compound documentation, arbitrary values should not be assigned for:
The operating medium and actual working conditions should be considered when selecting the seal.
A directional hydrodynamic sealing structure has not been confirmed for this exact GRN® reference.
Therefore, the seal should not be described as:
Right-hand Twist
or:
Left-hand Twist
without additional technical documentation.
The TC designation identifies the double lip construction and does not by itself establish a specific shaft rotation direction.
When selecting this rotary shaft seal, verify:
A different seal should not automatically be considered technically interchangeable simply because it has the same 48x72x8 mm dimensions.
Products with identical dimensions can differ in material, lip configuration, profile and other construction characteristics.
Important product identifiers include:
GRN® 48x72x8 NBR TC
48x72x8 NBR
48x72x8 TC
48x72x8 double lip shaft seal
48x72x8 rotary shaft seal
48x72x8 oil seal
GRN 48x72x8
These terms help identify the same dimensional product across technical, industrial and international search terminology.
| Parameter | Specification |
|---|---|
| Brand | GRN® |
| Product | Rotary shaft seal / oil seal |
| Dimensions | 48x72x8 mm |
| Shaft diameter d | 48 mm |
| Outside diameter D | 72 mm |
| Width B | 8 mm |
| Material | NBR |
| Profile | TC |
| Design | Double lip |
| Primary sealing lip | Spring-loaded |
| Garter spring | Yes |
| Auxiliary dust lip | Yes |
| Rotation direction | Not confirmed |
| Exact NBR hardness | Not confirmed |
| Exact temperature range | Not confirmed |
| Maximum pressure | Not confirmed |
| Maximum shaft speed | Not confirmed |
The nominal dimensions are d: 48 mm, D: 72 mm, B: 8 mm, giving the complete size 48x72x8 mm.
The sealing element is manufactured from NBR – Nitrile Butadiene Rubber.
TC identifies a double lip rotary shaft seal construction with a spring-loaded primary sealing lip and an auxiliary dust lip.
Yes. The TC design incorporates an auxiliary dust lip in addition to the primary sealing lip.
Yes. The primary sealing lip is supported by a garter spring.
A specific hydrodynamic rotation direction has not been confirmed for this reference. It should therefore not be described as right-hand or left-hand without additional documentation.
No. Seals with identical 48x72x8 mm dimensions can differ in material, lip design, profile and other construction characteristics.
Compare at least the complete 48x72x8 mm dimensions, NBR material, TC double lip construction and operating conditions. Matching dimensions alone do not establish full technical interchangeability.
GRN® 48x72x8 NBR TC is a double lip rotary shaft seal with nominal dimensions d: 48 mm, D: 72 mm, B: 8 mm. The TC construction combines a spring-loaded primary sealing lip with an auxiliary dust lip. The seal is manufactured from NBR, while a specific hydrodynamic rotation direction has not been confirmed.
Data sheet
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GRN® 48x72x8 NBR TC is a double lip rotary shaft seal with dimensions d: 48 mm, D: 72 mm, B: 8 mm. Material: NBR. The TC double lip design incorporates a spring-loaded primary sealing lip and an auxiliary dust lip. For correct identification, consider the complete 48x72x8 mm dimensions, NBR material and TC construction. Rotation direction is not confirmed.
Warehouse and Store: Lublin, Smoluchowskiego 1 Street, Building 4.
24h Shipping. Available from stock in Poland for delivery across the EU.
