B
Spring-loaded metal-cased single-lip oil seal
Premium spring-loaded single-lip rotary shaft seal with precision ground metal OD. Used for oil or grease retention.
This type is also the most economical design for general-purpose rotary sealing applications. An optimized seal lip with a garter spring maintains a constant radial lip force for optimum sealing. The metal case is exposed to the elements and to the fluid, however, the application of an optional sealant coating to the case, improves both static sealing and corrosion resistance between the housing and the seal OD. For dirty, dusty or polluted environments, our BS style with additional dust lip should be used.
Operating Range
| Material | Continuous Pressure | Max. Pressure Spike | Temperature | Surface Speed |
| Duralast 8838-LF | 3psi (0.2bar) | 7psi (0.5bar) | -4 to 392°F (-20 to 200°C) | Up to 7,000 fpm (35m/s) |
| Duralast 5117-LF | 3psi (0.2bar) | 7psi (0.5bar) | -13 to 212°F (-25 to 100°C) | Up to 2,600 fpm (13m/s) |
| Fluoroelastomer (FKM),Viton® | 3psi (0.2bar) | 7psi (0.5bar) | -4 to 392°F (-20 to 200°C) | Up to 6,000 fpm (30m/s) |
| Nitrile (NBR) | 3psi (0.2bar) | 7psi (0.5bar) | -13 to 212°F (-25 to 100°C) | Up to 2,400 fpm (12m/s) |
