GRN® Rotary Shaft Seal 100x125x12 NBR TC is a double-lip oil seal with dimensions 100x125x12 mm. Manufactured from NBR (Nitrile Butadiene Rubber), it features a spring-loaded primary sealing lip, additional dust lip and rubber-covered outside diameter. The original AO construction functionally corresponds to the commonly used TC design. GRN® rotary shaft seals have been in the TG Ersatzteile Polska range since 2007. Available from simmering.pl - stock in Poland with worldwide shipping.
GRN® Rotary Shaft Seal 100x125x12 NBR TC is a double-lip radial shaft seal with dimensions 100x125x12 mm. Manufactured from NBR (Nitrile Butadiene Rubber), it features a spring-loaded primary sealing lip, an additional dust lip and a rubber-covered outside diameter. The original AO construction functionally corresponds to the commonly used TC double-lip configuration in international oil seal terminology.
| Parameter | Value |
|---|---|
| Brand | GRN® |
| Product type | Rotary shaft seal |
| Common name | Oil seal |
| Dimensions | 100x125x12 mm |
| d - shaft diameter | 100 mm |
| D - housing bore diameter | 125 mm |
| B - width | 12 mm |
| Elastomer | NBR |
| Material name | Nitrile Butadiene Rubber |
| Original design reference | AO |
| International design reference | TC |
| Design | Double lip |
| Primary sealing lip | Spring-loaded |
| Additional lip | Dust lip |
| Outside diameter | Rubber-covered |
The designation 100x125x12 mm defines:
100 mm - nominal shaft diameter
125 mm - nominal housing bore diameter
12 mm - seal width
When selecting a replacement, all three dimensions should be checked together with the elastomer material, lip configuration and outside diameter construction.
For this product, AO identifies a double-lip rotary shaft seal construction featuring:
In international English-language product terminology, this type of construction is commonly described as TC - Double Lip Rotary Shaft Seal.
Seal designation systems are not completely standardized between manufacturers. Therefore, AO and TC should not be treated as universally identical manufacturer codes. The actual seal construction should always be verified when selecting an equivalent.
The GRN® 100x125x12 NBR TC incorporates two lips with different functions.
The primary sealing lip operates directly against the rotating shaft surface. A garter spring helps maintain contact between the sealing edge and the shaft.
The additional dust lip faces the external environment and provides an additional barrier that helps reduce the ingress of dust and other contaminants towards the primary sealing area.
The sealing element is manufactured from NBR (Nitrile Butadiene Rubber), one of the most widely used elastomers in rotary shaft sealing technology.
NBR is commonly used in sealing applications involving mineral oils and greases. Actual suitability depends on the specific medium and operating conditions.
The sealed medium, operating temperature, shaft surface speed and environmental conditions should therefore be considered when selecting an NBR oil seal.
The primary difference is the presence of an additional dust lip.
TC - double-lip construction with a spring-loaded primary sealing lip and an additional dust lip.
SC - single-lip construction with a spring-loaded primary sealing lip and no additional dust lip.
A 100x125x12 TC seal and a 100x125x12 SC seal can have identical nominal dimensions but different sealing constructions. They should not automatically be considered interchangeable.
These designs also differ in their outside diameter construction.
TC - double-lip design with a rubber-covered outside diameter.
B1 - typically a single-lip design with a metal outside diameter.
Matching dimensions alone are therefore not sufficient to establish interchangeability between these constructions.
A rotary shaft seal operates between a rotating shaft and a stationary housing.
The primary sealing lip helps retain a compatible lubricant or other medium within the operating area. The additional dust lip helps reduce the ingress of external contaminants towards the primary sealing zone.
The exact application should be confirmed using machine documentation or the dimensions and construction of the original seal.
This product may also be encountered under the following descriptions:
Before ordering, verify:
Matching the 100x125x12 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 and damage that could affect the elastomer.
The seal should be pressed evenly into the housing around its entire circumference without tilting or deformation.
The spring-loaded primary sealing lip should normally face the medium to be retained.
The dimensions are 100x125x12 mm: 100 mm shaft diameter, 125 mm outside diameter and 12 mm width.
Yes. It features a spring-loaded primary sealing lip and an additional dust lip.
The sealing element is manufactured from NBR (Nitrile Butadiene Rubber).
For this product, TC identifies a double-lip configuration with a spring-loaded primary sealing lip, an additional dust lip and a rubber-covered outside diameter.
AO is the original construction designation for this product. Its functional configuration corresponds to the commonly used TC double-lip design.
It provides an additional barrier that helps reduce the ingress of dust and other external contaminants towards the primary sealing area.
TC is a double-lip design with an additional dust lip. SC is a single-lip design without an additional secondary dust lip.
No. Dimensions, elastomer, lip configuration, outside diameter construction and operating requirements should all be verified.
GRN® Rotary Shaft Seal 100x125x12 NBR TC is a double-lip radial shaft seal manufactured from NBR. It measures 100x125x12 mm and features a spring-loaded primary sealing lip, an additional dust lip and a rubber-covered outside diameter. The TC configuration combines primary shaft sealing with additional protection against external contamination.
GRN® rotary shaft seals have been part of the TG Ersatzteile Polska product range since 2007. Available from simmering.pl, a specialist supplier of rotary shaft seals, bearings and industrial sealing solutions. Stock in Poland with worldwide shipping.
Data sheet
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GRN® Rotary Shaft Seal 100x125x12 NBR TC is a double-lip oil seal with dimensions 100x125x12 mm. Manufactured from NBR (Nitrile Butadiene Rubber), it features a spring-loaded primary sealing lip, additional dust lip and rubber-covered outside diameter. The original AO construction functionally corresponds to the commonly used TC design. GRN® rotary shaft seals have been in the TG Ersatzteile Polska range since 2007. Available from simmering.pl - stock in Poland with worldwide shipping.
