Looking for a reliable oil seal for rotating shafts? The TC oil seal is one of the most widely used designs for industrial and automotive applications. Its double-lip structure and steel casing make it a go-to choice for preventing oil leakage and dust ingress.
The TC oil seal combines durability, ease of installation, and high sealing performance—ideal for motors, gearboxes, and pumps.
Choosing the right oil seal type is essential to prevent early wear, leakage, or seal failure. Let’s explore why TC oil seals dominate the market.
What is a TC oil seal?
A TC oil seal is a rubber rotary shaft seal with a metal outer shell and a double-lip structure. The primary lip seals the lubricant inside, while the secondary lip (dust lip) prevents external contaminants from entering.
TC Oil Seal Structure:
| Component | Description |
|---|---|
| Outer Case | Metal shell for rigid fit |
| Inner Material | NBR or FKM rubber |
| Primary Lip | Seals oil on the shaft side |
| Dust Lip | Blocks dirt, dust, and splashes |
| Spring | Maintains sealing pressure on shaft |
At Hengoseal, our TC oil seals are available in NBR for general use and FKM for high-temperature or chemical environments.
What is the difference between TC and TG4 oil seals?
Both TC and TG4 are double-lip oil seals, but they differ in structure and reinforcement.
| Feature | TC Oil Seal | TG4 Oil Seal |
|---|---|---|
| Outer Case | Full metal shell | Rubber-coated shell with steel skeleton |
| Dust Lip | Included | Included |
| Material | NBR or FKM | NBR or FKM |
| Applications | Motors, reducers | Dust-heavy environments, off-road machinery |
👉 Learn more about TG4 Oil Seals here
👉 Or read our full guide: What is a Skeleton Oil Seal and How Does It Work?
What are TC oil seals used for?
TC oil seals are used to prevent oil leakage on rotating shafts under moderate pressure and speed. They are commonly found in:
- Electric motors and generators
- Industrial pumps and gearboxes
- Transmission systems
- Agricultural and mining equipment
- Automotive engines and axles
They are especially useful when both oil retention and dust protection are required.
What materials are available for TC oil seals?
We offer TC oil seals in two major elastomers:
- NBR (Nitrile Rubber): Cost-effective and resistant to oils, fuels, and water (operates from -40°C to +120°C)
- FKM (Viton® Fluoroelastomer): High chemical and heat resistance (operates up to +200°C)
Want to compare the two?
👉 Read: FKM vs NBR Oil Seals – Which Material Should You Choose?
Can TC oil seals be replaced across brands?
Yes. TC oil seals follow ISO and DIN standards, so they are interchangeable between manufacturers.
Need to find a National, SKF, or NOK equivalent?
👉 Use our Oil Seal Cross Reference Tool
Or send us the part number—we’ll match the exact seal for you.
Conclusion
The TC oil seal offers a strong balance of cost, performance, and reliability. With a dual-lip design and metal shell, it’s the preferred option for thousands of industrial and automotive applications.
Call to action
Looking for TC oil seals in NBR or FKM? Need OEM sizes or small batch orders?
📧 Email: [email protected]
📱 WhatsApp: +86 17622979498
EN 
BN 
AR 
CS 
DA 
DE 
EL 
EO 
ES 
IT 
FR 
PT 
ID 
JA 
RU 
ML 
RO 
VI 
UK 
TR 
TH 
KO