(under subclass 531) Subject matter wherein the element serves to prevent the ingress of fluids between a fastener with which it is used and an adjacent part.
SEE OR SEARCH CLASS
277, Seal for a Joint or Juncture, for a generic sealing means or process,
640, for a static contact seal for other than an internal combustion engine, or a pipe, conduit, or cable including an anchoring means extending through the seal.
