Standard Rotary Oil Seals TA/TB/TC/SA/SB/SC
Standard Rotary Oil Seals are designed to retain lubricants and prevent the ingress of dust, dirt, water, and other contaminants around rotating shafts. The TA, TB, TC, SA, SB, and SC profiles are widely used in automotive, industrial machinery, gearboxes, motors, pumps, and other rotating equipment.
Key Features
- Reliable oil and grease retention
- Effective protection against dust and contaminants
- Designed for rotating shafts
- Available in NBR, FKM (Viton®), ACM, and other elastomers
- Metric and inch sizes available
- Standard and custom dimensions
- Suitable for OEM, maintenance, and replacement applications
Standard Rotary Oil Seals — SA/SB/SC & TA/TB/TC
| Type | Typical Structure | Main Feature | Typical Application |
|---|---|---|---|
| SA | Double metal case + single sealing lip | High rigidity, suitable for large sizes | Heavy-duty machinery, large shaft applications |
| SB | Single metal case + single sealing lip | Compact and economical | Motors, gearboxes, general machinery |
| SC | Rubber-covered outer diameter + single sealing lip | Improved outer-diameter sealing | Pumps, gearboxes, general industrial equipment |
| TA | Double metal case + sealing lip & dust lip | High rigidity with additional contamination protection | Heavy machinery, demanding environments |
| TB | Single metal case + sealing lip & dust lip | Compact dual-lip design | Gearboxes, pumps, industrial machinery |
| TC | Rubber-covered outer diameter + sealing lip & dust lip | Excellent OD sealing and contamination protection | Automotive, gearboxes, agricultural machinery |
How to Choose
Choose by sealing environment
- Clean environment:SA / SB / SC
- Dust, dirt or moisture:TA / TB / TC
- General-purpose applications:TC is widely used because the rubber-covered OD provides good housing sealing and the additional dust lip helps protect the primary sealing lip.
Choose by housing design
- Large size / high rigidity:SA / TA
- Precision metal housing:SB / TB
- Aluminum or softer housing / better OD sealing:SC / TC
