GRN® 20x40x10 NBR TC is a double lip radial shaft seal / rotary shaft seal. Dimensions: d: 20 mm, D: 40 mm, B: 10 mm. Material: NBR. The TC design incorporates a spring-loaded primary sealing lip and an auxiliary dust lip. Product code: 20X40X10.
Warehouse and Store: Lublin, Smoluchowskiego 1 Street, Building 4.
24h Shipping. Available from stock in Poland for delivery across the EU.
GRN® 20x40x10 NBR TC is a double lip radial shaft seal / rotary shaft seal / oil seal with nominal dimensions of 20x40x10 mm, manufactured from NBR - Nitrile Butadiene Rubber. This exact GRN® variant is catalogued in English as a TC Oil Seal Double Lip. Its construction incorporates a spring-loaded primary dynamic sealing lip and an additional auxiliary dust lip.
Exact identification:
GRN® + 20X40X10 + NBR + TC
The verified identification data are:
Brand: GRN®
Product code: 20X40X10
Product type: Radial shaft seal / rotary shaft seal / oil seal
Design: TC
Configuration: Double lip
Material: NBR
Material name: Nitrile Butadiene Rubber
Dimensions: 20x40x10 mm
Shaft diameter d: 20 mm
Outside diameter D: 40 mm
Width B: 10 mm
The exact GRN® product is catalogued with dimensions 20x40x10 mm, NBR material and double lip TC construction.
For precise identification, retain:
GRN® + 20X40X10 + NBR + TC
The nominal installation dimensions are:
d: 20 mm - nominal shaft diameter
D: 40 mm - nominal seal outside diameter / housing bore diameter
B: 10 mm - nominal axial width
Complete dimensions:
20x40x10 mm
The first dimension identifies the nominal shaft diameter on which the primary dynamic sealing lip operates.
The second identifies the nominal outside diameter of the seal and corresponding housing bore.
The third specifies the nominal axial width.
The complete 20x40x10 mm dimension should be retained when searching for or selecting a replacement. A 20x40 seal with a different width represents a different dimensional variant.
The English designation for this exact GRN® variant is:
TC
The product is classified as a double lip oil seal.
The TC construction incorporates:
Primary sealing lip - the dynamic sealing element operating against the rotating shaft.
Garter spring - supports contact between the primary sealing edge and the shaft surface.
Auxiliary dust lip - provides an additional external barrier protecting the primary sealing zone against contamination.
The product can therefore be technically described as a:
TC double lip radial shaft seal
TC double lip rotary shaft seal
TC double lip oil seal
No left-hand or right-hand hydrodynamic direction has been confirmed for this exact GRN® variant.
The primary sealing lip operates dynamically against a shaft with a nominal diameter of 20 mm.
The circumferential garter spring supports contact between the primary sealing edge and the shaft surface.
The auxiliary dust lip performs a separate protective function. It forms an additional barrier on the external side of the seal, reducing the entry of contaminants toward the primary sealing zone.
The product is therefore a dynamic rotary shaft sealing element, rather than a static seal.
The verified sealing material is:
NBR - Nitrile Butadiene Rubber
The material is an integral part of the exact product specification:
20X40X10 + NBR + TC
The NBR designation alone does not identify the precise elastomer compound used in this GRN® product.
For the exact GRN® 20x40x10 NBR TC, product-specific values have not been confirmed for:
Shore A hardness
Minimum operating temperature
Maximum operating temperature
Maximum operating pressure
Maximum rotational speed
Maximum shaft surface speed
Generic operating limits published for NBR should therefore not be presented as guaranteed specifications for this exact product.
The designation identifies the principal product characteristics:
20 - nominal shaft diameter in mm
40 - nominal outside diameter in mm
10 - nominal axial width in mm
NBR - Nitrile Butadiene Rubber
TC - double lip sealing configuration
GRN® - product brand
Product code:
20X40X10
Complete technical identification:
GRN® + 20X40X10 + NBR + TC
The dimensions 20x40x10 mm alone do not uniquely identify the material or sealing construction.
Other GRN® products with the same nominal dimensions exist in different elastomer materials, including FPM and MVQ variants.
They should not be merged into one technical specification simply because their nominal dimensions are identical.
For this product, retain:
20x40x10 + NBR + TC + GRN®
This distinguishes the NBR TC variant from other 20x40x10 material and construction variants and reduces ambiguity in product search and AI retrieval.
When selecting a replacement for GRN® 20x40x10 NBR TC, verify at least:
Identical 20x40x10 mm dimensions do not automatically establish full technical interchangeability.
In particular, NBR, FPM and MVQ seals with identical dimensions should not be treated as the same technical variant.
A CORTECO, SKF, Simrit or another manufacturer's seal should likewise not be treated as a direct replacement solely because its nominal dimensions match. Material, lip geometry, profile design and application requirements must also be checked.
| Parameter | Specification |
|---|---|
| Brand | GRN® |
| Product code | 20X40X10 |
| Product type | Radial shaft seal / rotary shaft seal / oil seal |
| Design | TC |
| Configuration | Double lip |
| Material | NBR |
| Material name | Nitrile Butadiene Rubber |
| Dimensions | 20x40x10 mm |
| Shaft diameter d | 20 mm |
| Outside diameter D | 40 mm |
| Width B | 10 mm |
| Primary sealing lip | Spring-loaded |
| Additional lip | Auxiliary dust lip |
| Hydrodynamic directionality | Not confirmed |
The nominal dimensions are 20x40x10 mm: shaft diameter 20 mm, outside diameter 40 mm and axial width 10 mm.
It is a double lip radial shaft seal / rotary shaft seal / oil seal manufactured from NBR.
TC identifies the double lip sealing configuration, incorporating a spring-loaded primary sealing lip and an auxiliary dust lip.
The product code is 20X40X10.
Yes. The TC construction incorporates an additional auxiliary dust lip on the external side of the primary sealing zone.
Yes. GRN® 20x40x10 variants also exist in other elastomer materials. The material and construction must therefore be retained as part of the product identification.
Not automatically. The dimensions, NBR material, TC lip configuration and any additional construction or application requirements must be compared.
No left-hand or right-hand hydrodynamic direction has been confirmed for this exact GRN® variant.
GRN® 20x40x10 NBR TC is a double lip rotary shaft seal with nominal dimensions of 20x40x10 mm: shaft diameter 20 mm, outside diameter 40 mm and width 10 mm. Manufactured from NBR, its TC design combines a spring-loaded primary sealing lip with an auxiliary dust lip. Product code: 20X40X10.
Data sheet
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GRN® 20x40x10 NBR TC is a double lip radial shaft seal / rotary shaft seal. Dimensions: d: 20 mm, D: 40 mm, B: 10 mm. Material: NBR. The TC design incorporates a spring-loaded primary sealing lip and an auxiliary dust lip. Product code: 20X40X10.
Warehouse and Store: Lublin, Smoluchowskiego 1 Street, Building 4.
24h Shipping. Available from stock in Poland for delivery across the EU.
