Abstract: An improved fluid seal device or pressure seal of the type suitable for uses such as sealing an annular space between an internal surface and a member having an outer cylindrical surface is described. The seal includes a reinforced body formed of fabric reinforced rubber and at least one dynamic lip made substantially of rubber. The lip protrudes from the seal so that a small portion of the lip contiguous to the body of the seal and containing fabric reinforcement is contacted by the movable member in addition to the movable member contacting the resilient portion of the lip. The resilient portion of the lip hinges along the interface between the resilient portion and the fabric reinforced portion to control break-away frictional forces between the seal and the member.

Abstract: An improvement in a sealing combination between a head of a hydraulic cylinder and a plastic covered cable traversing therethrough, including the plastic covered cable connected with a piston interiorly of the cylinder so as to be moved longitudinally responsive to hydraulic pressure applied to the piston traversing interiorly of the cylinder, a gland disposed about and sealingly encompassing the plastic covered cable, a head defining an annular packing box about the plastic covered cable and adapted to receive the gland for holding a seal in place and a wiper ring disposed in the gland and about the plastic covered cable for wiping dirt and the like therefrom before the cable enters the sealing combination; characterized by a split ring of resilient material emplaced in the bottom of the packing box and encompassing the plastic covered cable without sealing engagement therewith; a split backup compression ring of thermoplastic material disposed in the packing box so as to be responsive to the compressive for

Abstract: An improvement in a sealing combination for sealing intermediate a cap ring on the hydraulic cylinder or the like and a rod running concentrically therethrough characterized by, in addition to the usual cage assembly on the cylinder assembly, a stuffing box and a wiper ring box for holding respective seals and ring wiper, bearing for maintaining the rod centralized within the central assembly and facilitating longitudinal movement, primary seal disposed about the rod and within the sealing box, a rod wiper disposed about the rod and within the wiper ring box, secondary seal disposed about the rod and intermediate the primary seal and the rod wiper and stop device disposed intermediate the primary seal and the secondary seal and adapted to stop longitudinal movement of the bearing to prevent crushing the second seal. Also disclosed are specific preferred embodiments.

Abstract: A packing seal characterized by a plurality of rings formed from extruded lineal members. The extruded lineal members each have a height h from top to bottom, a width .DELTA.R, a pair of heels that slope outwardly from the sidewalls of the top to near a substantially flat bottom, the bottom having a groove disposed intermediate the heels and adapted to receive a linear anti-roll tab from a contiguous ring therebeneath. The top lineal member has a substantially flat top without the anti-roll tab for being contiguous a gland ring. Dimensions of the respective dimensions, which are critical to operation of the seal at low pressure and high pressure, are disclosed and claimed; as are suitable mechanical pressure inducing mechanism and flow blocks that are employed to ensure and complete the seal.