塞填料的杆 packing stick

活塞杆填料函 piston rod stuffing box

活塞杆填料 piston rod packing

活塞杆填料函压盖 piston rod gland ; piston rod stuffing box gland

塞填料的杆填料粘结 packing stick

活塞联杆填料函盖 piston rod stuffing box cup

活塞杆填密函 piston rod stuffing box