Oil seals are used to seal lubricants adn fluids around and fluids arounds an oscillating, rotating or reciprocating shafts, thy also prevent the entry of contaminants that can destroy internal components. At sunshine sealing, we offer a large selection of rotary shaft seal designs ranging from spring loaded, non-spring loaded, metal casings, rubber coverved casings as well as several other custom lip and case design from over 50000 available tools, we also supply custom rotary shaft oil seals per your print or design needs, the material can be avilable of NBR, VITON, FKM, FPM, SILICONE, NR and so on.