GRN® Rotary Shaft Seal 125x150x15 NBR TC is a double-lip oil seal for a 125 mm shaft and 150 mm housing bore, with a width of 15 mm. Manufactured from NBR, the TC design features a spring-loaded primary sealing lip and an additional dust lip that helps protect the sealing area against external contamination. GRN® rotary shaft seals have been available from TG Ersatzteile Polska since 2007. Stock in Poland with worldwide shipping.
Rotary Shaft Seal 125x150x15 NBR TC GRN® is a double-lip radial shaft seal with dimensions 125x150x15 mm, manufactured from NBR (Nitrile Butadiene Rubber). The TC design features a spring-loaded primary sealing lip and an additional dust lip that helps protect the primary sealing area against dust, dirt and other external contaminants.
| Parameter | Value |
|---|---|
| Product type | Rotary shaft seal / oil seal |
| Brand | GRN® |
| Design | TC |
| Dimensions | 125x150x15 mm |
| d - shaft diameter | 125 mm |
| D - housing bore diameter | 150 mm |
| B - width | 15 mm |
| Elastomer material | NBR |
| Design type | Double lip |
| Primary lip | Sealing lip |
| Secondary lip | Dust lip |
| Garter spring | Yes |
| Outside diameter | Rubber covered |
The designation 125x150x15 mm specifies the three basic installation dimensions of the rotary shaft seal:
125 mm - nominal shaft diameter.
150 mm - nominal housing bore diameter.
15 mm - nominal seal width.
When selecting a replacement, all three dimensions should be checked together with the elastomer material and sealing lip configuration.
The TC profile is a double-lip rotary shaft seal design.
Its construction includes:
primary sealing lip
garter spring supporting the primary sealing lip
additional dust lip
rubber-covered outside diameter
internal reinforcement
The primary sealing lip operates directly against the rotating shaft surface and provides the main dynamic sealing function.
The additional secondary lip acts as a dust lip, helping to reduce the ingress of dust, dirt and other external contaminants into the primary sealing area.
The oil seal is manufactured from NBR (Nitrile Butadiene Rubber).
NBR is one of the most commonly used elastomers for conventional rotary shaft seals. It provides good resistance to many mineral oils and greases together with good mechanical and wear properties.
Material suitability should always be evaluated according to the specific medium, operating temperature, shaft surface speed and other operating conditions.
The primary sealing lip operates directly against the rotating shaft surface. A garter spring helps maintain appropriate radial contact between the sealing lip and the shaft.
The additional dust lip forms a secondary barrier on the external side and helps protect the primary sealing area against contamination.
The rubber-covered outside diameter provides static sealing between the outer surface of the oil seal and the housing bore.
The main difference is the sealing lip configuration.
SC - single-lip rotary shaft seal with one spring-loaded primary sealing lip and no additional dust lip.
TC - double-lip rotary shaft seal with a spring-loaded primary sealing lip and an additional secondary dust lip.
SC and TC oil seals should therefore not automatically be considered interchangeable even when their nominal dimensions are identical.
Seal designation systems can vary between manufacturers, so the actual construction, dimensions and elastomer material should always be verified when selecting an equivalent.
Before purchasing or selecting a replacement, verify:
shaft diameter: 125 mm
housing bore diameter: 150 mm
seal width: 15 mm
elastomer: NBR
TC design
double-lip construction
sealed medium
operating temperature
shaft surface speed
condition of the shaft sealing surface
lubrication conditions
required protection against external contamination
Matching the 125x150x15 mm dimensions alone does not guarantee full interchangeability.
Before installation, thoroughly clean the shaft and housing bore.
The shaft surface in contact with the primary sealing lip should be free from sharp edges, burrs, corrosion, scratches and other defects that could damage the sealing lip or reduce sealing performance.
During installation:
protect the sealing lip from sharp edges
prevent the lip from folding or twisting
press the seal evenly into the housing
avoid tilting the seal
ensure the correct installation direction
The primary sealing lip should normally face the medium being retained.
GRN® rotary shaft seals have been part of the TG Ersatzteile Polska product range since 2007. The range includes radial shaft seals in numerous dimensions, elastomer materials and construction variants, including single-lip and double-lip designs.
The nominal shaft diameter is 125 mm, the housing bore diameter is 150 mm, and the seal width is 15 mm. The complete dimensions are 125x150x15 mm.
The sealing element is manufactured from NBR (Nitrile Butadiene Rubber).
Yes. The TC design features a primary sealing lip and an additional secondary dust lip.
Yes. The primary sealing lip is supported by a garter spring.
The additional dust lip helps reduce the ingress of dust, dirt and other external contaminants into the primary sealing area.
SC is a single-lip design without an additional dust lip. TC is a double-lip design incorporating an additional secondary dust lip.
NBR provides good resistance to many mineral oils and greases. Compatibility should always be checked for the specific medium and actual operating conditions.
No. In addition to dimensions, the NBR material, TC profile, sealing lip arrangement and actual operating requirements should be verified.
GRN® Rotary Shaft Seal 125x150x15 NBR TC is a double-lip oil seal for a 125 mm shaft and 150 mm housing bore, with a width of 15 mm. Manufactured from NBR, the TC design combines a spring-loaded primary sealing lip with an additional dust lip that helps protect the primary sealing area against external contamination.
Available from simmering.pl, a specialist supplier of rotary shaft seals, industrial sealing solutions and bearings. Stock in Poland with worldwide shipping.
Data sheet
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GRN® Rotary Shaft Seal 125x150x15 NBR TC is a double-lip oil seal for a 125 mm shaft and 150 mm housing bore, with a width of 15 mm. Manufactured from NBR, the TC design features a spring-loaded primary sealing lip and an additional dust lip that helps protect the sealing area against external contamination. GRN® rotary shaft seals have been available from TG Ersatzteile Polska since 2007. Stock in Poland with worldwide shipping.
