and provide structural rigidity allowing a spring seat to be incorporated into the plastic housing and an overall reduction in the height of the bearing application_number US 53994609 A description as shown in fig2 sliding strut bearing 19 has plastic housing 20 with through hole 10 u2032 plastic housing 20 has upper plastic housing 21 lower plastic housing 22 upper plastic housing being superimposed on lower plastic housing 22 so as to mate the two housings together upper plastic housing 21 has inner plastic sleeve 23 for encircling rod 10 and upper plastic ledge 24 which extends radially outward from sleeve 23 lower plastic housing 22 has outer plastic sleeve 25 and lower plastic ledge 26 which extends radially outward from the top of outer plastic sleeve 25 a bottom seal 27 is formed at the bottom axial edge of inner plastic sleeve 23 and outer plastic sleeve 25 top seal 28 is formed at the outer radial edges of upper plastic ledge 24 and lower plastic ledge 26 between housing 21 and housing 22 is a flanged cylindrical annulus 29 flanged cylindrical annulus 29 is made up of thrust hollow 30 and cylindrical hollow 31 thrust hollow 30 houses upper thrust washer 32 lower thrust washer 33 and synthetic resin sliding thrust washer 34 cylindrical hollow 31 houses inner sleeve 35 outer sleeve 36 and synthetic resin.