DesignThe Hallite 667 uses the well established sealing lip of the Hallite 607 pneumatic piston seal in a construction that provides additional cushioning for a pneumatic cylinder. Made from Hallite 181 material, the design incorporates buffers, which reduce the likelihood of metal contact at the end stroke of a cylinder, particularly if the retardation of the piston by the pneumatic cushion is insufficient. In turn, this additional buffering will reduce end stroke noise.Features Effective sealing Low friction Easy installation Excellent temperature range Reduced cylinder noise