NOTE fill type compensator sleeve adapted straight pipe laying, back injection material combination of inner sleeve, jacket, stop, tail sets, packing chamber, guide bearings and other components. Features: 1, along the pipe axis direction of the inner sleeve relative sliding movement, absorbing pipe thermal elongation of cold shortening, to release tube heat stress. 2, special sealant injection material by check injection nozzle, so to achieve a smooth sliding seal in the sealing pressure between the inside jacket. 3, relying on the guide bearing pipes with lateral forces to achieve a height axis of the housing relative movement, prevent abrasions plating sets of pipes running under the seal more reliable and durable. 4, inserted into the outer end of the inner sleeve to take a firm anti-extrusion design, make the product more secure.