Patent ID: 6951337

Claim:
Apparatus for creating a seal between a first surface and a second surface, said first surface being rotatable with respect to said second surface, said apparatus comprising PTFE and including a body having an inner side for abutting said first surface and a lip extending from said body towards said second surface, said lip including a rear side distal from said second surface adapted to seal off a fluid medium, a front side proximate to said second surface, a lower portion proximate to said body, an upper portion distal from said body, a sealing surface on said front side of said lip for abutting said second surface to seal said second surface, and a resilient ring element for providing a force acting on said lip to urge said sealing surface towards said second surface, said resilient ring element being disposed on said front side of said lower portion of said lip whereby said resilient ring element is concealed from said rear side of said lip and that the resilient ring element is not exposed to the sealed off fluid medium.