100 × 120 × 12 oil seal
Oil seals › 100 × 120 × 12
A 100 × 120 × 12 oil seal fits a 100 mm shaft in a 120 mm housing bore and is 12 mm wide. Ask for 100×120×12 TC: a rotary shaft seal with two lips and a garter spring.
| Shaft Ø | 100 mm |
|---|---|
| Housing bore | 120 mm |
| Width | 12 mm |
| Housing bore, H8 | 120.000 to 120.054 mm |
| Shaft, h11 | 99.780 to 100.000 mm, ground Ra 0.2–0.8 µm |
| Shaft lead-in | 15–30° down to Ø94.5 mm |
| Housing | chamfer 15–30°, bore at least 12.3 mm deep |
A common metric size (DIN 3760 / ISO 6194). Tolerances from ISO 286; fitting sizes as Benchsmith's Find → Seal gives them.
Open 100 × 120 × 12 in BenchsmithAdd to order list
Bench note · why the spring faces the oil
The lip with the garter spring faces the oil or grease you keep in. The second, dust lip faces out. Fitted backwards it leaks from the first turn.
Bench note · why a lead-in on the shaft
Push it on over a chamfer, a sleeve or tape over keyways and threads: a sharp edge rolls or cuts the lip. Press the seal in square with a driver on the outer case, not on the lip.
Same shaft, other housings
- 100 × 125 × 1212 mm wide
- 100 × 130 × 1212 mm wide
Same housing bore, other shafts
- 90 × 120 × 1212 mm wide
- 95 × 120 × 1212 mm wide
Next shaft size
- 95 × 120 × 1295 mm shaft (down)
Old seal with no size on it? Measure the shaft, the housing bore and the width, and type them into Benchsmith → Find → Seal.