EXTRUSION RESISTANT HYDRODYNAMICALLY LUBRICATED MULTIPLE MODULUS ROTARY SHAFT SEAL

摘要

A hydrodynamically lubricated interference type rotary shaft seal (136) for environmental exclusion and high pressure lubricant retention which incorporates composite multiple modulus construction and non-planar flexible environmental edge heel geometry which cooperate to resist high pressure extrusion damage while minimizing interfacial contact pressure and accommodating radial shaft motion.