SB41
Flanged double-lip PTFE rotary shaft seal
This flanged seal design incorporates redundant seal lips that provide higher pressure and better sealing capabilities, especially under flooded conditions. The soft OD eliminates damage to housings, is capable of handling extreme temperatures, aggressive media, high surface speeds, low to medium pressures, and can even run dry. The soft seal OD eliminates damage to housings manufactured from expensive metals, and the flange serves as an anti-rotation device where media being sealed precludes the use of an elastomer. It is typically used to provide, high-pressure solution and as a secondary seal in a purging or ported system. Small quantities are available in 2-4 days.
Operating Range
| Material | Continuous Pressure | Max.Pressure Spike | Temperature | Surface Speed | Application | Dry-run | PV-Rating |
| Permachem 6233 | 200psi (14bar) | 300psi (20bar) | -80 to 400°F (-60 to 200°C) | Up to 3,500 fpm (17.5m/s) | standard oil lubrication, high waterbased fluids | YES | 8 |
| Permachem 6235 | 200psi (14bar) | 300psi (20bar) | -80 to 400°F (-60 to 200°C) | Up to 3,500 fpm (17.5m/s) | Soft shaft material, gaseous media, FDA compliant | YES | 8 |
| Duraloy 4736 | 200psi (14bar) | 300psi (20bar) | -80 to 400°F (-60 to 200°C) | Up to 3,500 fpm (17.5m/s) | low wear and abrasion, long service life | YES | 8 |
