液压密封-James walker Chevron Packing Twinset
The packing set comprises an endless U-ring firmly supported by a header ring. The lips of the U-ring are slightly flared to provide an interference fit for initial sealing. When system pressure is applied, the sealing force is increased significantly by reaction within the tongue-shaped cavity of the U-ring.
Very well proven on reciprocating plant worldwide.
Readily available in traditional sizes for older plant.
Suitable for adjustable and nonadjustable axial length housings.
Twinset was developed for use on vertically reciprocating hydraulic shafts and rams. Current applications include the main rams of upstroking/gravity return presses and downstroking/prefilling type presses. Twinset has also proved successful on press drawback rams, hydraulic piston heads, jacks and hoists,
and hydraulic valves.