Oil seal assembly and shock absorber

A shock absorber including:

• a housing including a first tube and a second tube slidably connected to each other, an interior of the first tube being in communication with an interior of the second tube to define an internal space;
• a buffer mechanism disposed in the first tube and located in the internal space, the buffer mechanism being movably inserted in the second tube;
• and
• an oil seal assembly disposed between the first tube and the second tube, the oil seal assembly including a seat and a first sealing member, the seat being assembled to the first tube, the seat including an inner wall and a through hole, the inner wall forming the through hole, the inner wall including a first annular groove, the first sealing member being disposed in the first annular groove and at least partially radially protrusive beyond the first annular groove and within the through hole, the first sealing member annularly abutting against a circumferential surface of the second tube, the oil seal assembly further including a second sealing member and a bearing, the first tube including an open end portion, the second tube being inserted through the first tube from the open end portion, and the second sealing member, the first sealing member and the bearing being sequentially arranged in a direction away from the open end portion.