Provided is a self-lubricating oil-pumping polished rod following sealer, comprising an oil-pumping polished rod (1), a stuffing box (2), a lower gasket (3), a motion-following packer cup (4), sealing stuffing material (5), a lower sliding sleeve (6), an oil hole (7), an upper gasket (8), an upper sliding sleeve (9), a gland (10), a bolt (11), a washer (12), a lubricant (13), and a gland handle (14).
一种自润滑抽油光杆跟踪密封器,包括抽油光杆(1)、密封盒(2)、下密封垫(3)、随动料杯(4)、密封填料(5)、下压套(6)、油孔(7)、上密封垫(8)、上压套(9)、压盖(10)、螺栓(11)、垫圈(12)、润滑剂(13)和压盖手柄(14)。patents-wipo patents-wipo