A unitized seal for use in a gas spring seal assembly. The unitized seal includes a rigid thermoplastic insert having an elastomeric sealing layer surrounding the insert and bonded to the insert. The insert provides rigidity to the seal and includes a central, axial opening that receives and guides a...http://www.google.fr/patents/US6905124?utm_source=gb-gplus-shareBrevet US6905124 - Unitized seal for a gas spring
