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TC Oil Seal Spec Table
TC Oil Seal Specifications — 72 sizes
KS B 2804JIS B 2402
A dual-lip (TC-type) oil seal where the main lip retains oil and the dust lip blocks contaminants. Widely used for rotating shaft sealing in reducers, motors, and hydraulic equipment.
Practical Notes
- Dual lip (main + dust) — main lip seals oil, dust lip blocks contaminants. Suited for dusty environments.
- Shaft surface Ra 0.2–0.4μm and hardness HRC 45+ required. Substandard conditions accelerate lip wear.
KSTC Oil Seal
51 sizes| Nominal (d×D×b) | Shaft d (mm) | Housing D (mm) | Width b (mm) | Material | Standard |
|---|---|---|---|---|---|
| 10×22×7 | 10 | 22 | 7 | NBR | KS B 2804 |
| 10×25×7 | 10 | 25 | 7 | NBR | KS B 2804 |
| 12×24×7 | 12 | 24 | 7 | NBR | KS B 2804 |
| 12×25×7 | 12 | 25 | 7 | NBR | KS B 2804 |
| 15×30×7 | 15 | 30 | 7 | NBR | KS B 2804 |
| 15×35×7 | 15 | 35 | 7 | NBR | KS B 2804 |
| 16×30×7 | 16 | 30 | 7 | NBR | KS B 2804 |
| 17×30×7 | 17 | 30 | 7 | NBR | KS B 2804 |
| 17×35×7 | 17 | 35 | 7 | NBR | KS B 2804 |
| 18×30×7 | 18 | 30 | 7 | NBR | KS B 2804 |
| 20×35×7 | 20 | 35 | 7 | NBR | KS B 2804 |
| 20×40×7 | 20 | 40 | 7 | NBR | KS B 2804 |
| 22×35×7 | 22 | 35 | 7 | NBR | KS B 2804 |
| 22×40×7 | 22 | 40 | 7 | NBR | KS B 2804 |
| 25×40×7 | 25 | 40 | 7 | NBR | KS B 2804 |
| 25×42×7 | 25 | 42 | 7 | NBR | KS B 2804 |
| 25×47×7 | 25 | 47 | 7 | NBR | KS B 2804 |
| 28×47×7 | 28 | 47 | 7 | NBR | KS B 2804 |
| 30×45×7 | 30 | 45 | 7 | NBR | KS B 2804 |
| 30×47×7 | 30 | 47 | 7 | NBR | KS B 2804 |
| 30×50×10 | 30 | 50 | 10 | NBR | KS B 2804 |
| 32×47×7 | 32 | 47 | 7 | NBR | KS B 2804 |
| 32×52×8 | 32 | 52 | 8 | NBR | KS B 2804 |
| 35×50×7 | 35 | 50 | 7 | NBR | KS B 2804 |
| 35×52×8 | 35 | 52 | 8 | NBR | KS B 2804 |
| 35×55×10 | 35 | 55 | 10 | NBR | KS B 2804 |
| 38×55×8 | 38 | 55 | 8 | NBR | KS B 2804 |
| 40×55×7 | 40 | 55 | 7 | NBR | KS B 2804 |
| 40×60×10 | 40 | 60 | 10 | NBR | KS B 2804 |
| 45×62×8 | 45 | 62 | 8 | NBR | KS B 2804 |
| 45×65×8 | 45 | 65 | 8 | NBR | KS B 2804 |
| 50×68×10 | 50 | 68 | 10 | NBR | KS B 2804 |
| 50×70×10 | 50 | 70 | 10 | NBR | KS B 2804 |
| 55×72×8 | 55 | 72 | 8 | NBR | KS B 2804 |
| 55×75×10 | 55 | 75 | 10 | NBR | KS B 2804 |
| 60×80×10 | 60 | 80 | 10 | NBR | KS B 2804 |
| 60×82×10 | 60 | 82 | 10 | NBR | KS B 2804 |
| 65×85×10 | 65 | 85 | 10 | NBR | KS B 2804 |
| 65×90×10 | 65 | 90 | 10 | NBR | KS B 2804 |
| 70×90×10 | 70 | 90 | 10 | NBR | KS B 2804 |
| 70×95×10 | 70 | 95 | 10 | NBR | KS B 2804 |
| 75×95×10 | 75 | 95 | 10 | NBR | KS B 2804 |
| 75×100×10 | 75 | 100 | 10 | NBR | KS B 2804 |
| 80×100×10 | 80 | 100 | 10 | NBR | KS B 2804 |
| 80×105×12 | 80 | 105 | 12 | NBR | KS B 2804 |
| 85×110×12 | 85 | 110 | 12 | NBR | KS B 2804 |
| 90×110×12 | 90 | 110 | 12 | NBR | KS B 2804 |
| 90×115×12 | 90 | 115 | 12 | NBR | KS B 2804 |
| 95×120×12 | 95 | 120 | 12 | NBR | KS B 2804 |
| 100×125×12 | 100 | 125 | 12 | NBR | KS B 2804 |
| 100×130×12 | 100 | 130 | 12 | NBR | KS B 2804 |
JISTC Oil Seal
21 sizes| Nominal (d×D×b) | Shaft d (mm) | Housing D (mm) | Width b (mm) | Material | Standard |
|---|---|---|---|---|---|
| 10×22×7 | 10 | 22 | 7 | NBR | JIS B 2402 |
| 15×30×7 | 15 | 30 | 7 | NBR | JIS B 2402 |
| 20×35×7 | 20 | 35 | 7 | NBR | JIS B 2402 |
| 20×40×7 | 20 | 40 | 7 | NBR | JIS B 2402 |
| 25×42×7 | 25 | 42 | 7 | NBR | JIS B 2402 |
| 25×47×7 | 25 | 47 | 7 | NBR | JIS B 2402 |
| 30×47×7 | 30 | 47 | 7 | NBR | JIS B 2402 |
| 30×50×10 | 30 | 50 | 10 | NBR | JIS B 2402 |
| 35×52×8 | 35 | 52 | 8 | NBR | JIS B 2402 |
| 35×55×10 | 35 | 55 | 10 | NBR | JIS B 2402 |
| 40×60×10 | 40 | 60 | 10 | NBR | JIS B 2402 |
| 45×62×8 | 45 | 62 | 8 | NBR | JIS B 2402 |
| 50×70×10 | 50 | 70 | 10 | NBR | JIS B 2402 |
| 55×75×10 | 55 | 75 | 10 | NBR | JIS B 2402 |
| 60×80×10 | 60 | 80 | 10 | NBR | JIS B 2402 |
| 65×85×10 | 65 | 85 | 10 | NBR | JIS B 2402 |
| 70×90×10 | 70 | 90 | 10 | NBR | JIS B 2402 |
| 75×100×10 | 75 | 100 | 10 | NBR | JIS B 2402 |
| 80×100×10 | 80 | 100 | 10 | NBR | JIS B 2402 |
| 90×115×12 | 90 | 115 | 12 | NBR | JIS B 2402 |
| 100×125×12 | 100 | 125 | 12 | NBR | JIS B 2402 |
Key Features
- Dual-lip (TC) design simultaneously seals oil (main lip) and blocks dust/contaminants (dust lip)
- Metal case press-fitted into housing; garter spring maintains lip contact pressure
- KS B 2804 / JIS B 2402 / ISO 6194-1; available in NBR or FKM elastomer
Key Applications
Reducer output shaft sealing, automotive engine/transmission seals, hydraulic motor shaft sealing, industrial pumps and compressors
FAQ
When to choose TC vs SC oil seal?
Dusty/contaminated environment→TC (dual lip); clean environment or low friction needed→SC (single lip). TC is used in 80%+ of applications.