Lubrication-Free Seals
Brand :
MISUMI
Caution
Product Description
[Features]
• Lubrication-free seal with an oil seal made of polytetrafluoroethylene resin (PTFE).
[Use]
• Use as a machine, fixture, or assembly component where its listed configuration matches the required installation.
Lubrication-free seals (PTFE)
MFHN is a lubrication-free rotary seal. The seal lip is polytetrafluoroethylene (PTFE) and the metal section is SUS304. It can seal high-temperature steam, water, various chemicals and oil. Install with the marked side facing the atmosphere side.
Dimensional drawing
- Use with the marked side facing the atmosphere.
| Type | Material | Application | |
|---|---|---|---|
| Resin part | Metal part | ||
| MFHN | Polytetrafluoroethylene (PTFE) | SUS304 | For rotation |
Part numbers and dimensions
Ordering example
| Type |
|---|
| MFHN25 |
| Type | D | C | |||
|---|---|---|---|---|---|
| Type | d | ||||
| MFHN | 10 | 25 | +0.09 +0.04 | 7.0 | ±0.3 |
| 12 | |||||
| 15 | 30 | ||||
| 20 | 40 | +0.11 +0.05 | 11.0 | ±0.4 | |
| 25 | 45 | ||||
| 30 | 50 | ||||
| 35 | 55 | +0.14 +0.06 | |||
| 40 | 62 | ||||
| 50 | 72 | 12.0 | |||
- The recommended housing bore tolerance is H8.
Operating conditions
| Operating temperature range | -60–200°C |
|---|---|
| Operating pressure | 0.03 MPa or less |
| Peripheral speed | 30 m/s or less |
| Shaft tolerance | h7 (g6 also possible) |
| Shaft roughness | Ra:0.2–0.45μm Rz:0.8–1.8μm |
| Sealed media | Hot steam, water, chemicals, oil |