SEAL CLASPER CAN CLASP PTFE PISTON SEALS BACK INTO PISTON GROOVE. IT WORKS FROM 50MM-250MM OUTSIDE DIAMETER (2" TO 9.5" CYLINDER BORE SIZE) THE STAINLESS STEEL BELT CAN EASILY BE ADJUSTED ACCORDING TO THE DIMENSION OF SEALS HPU TRIANGLE PROTECTOR PREVENTS THE SEAL FROM BEING DAMAGED DURING INSTALLATION VERY SIMPLE TO OPERATE AND REPLACE PTFE PISTON SEALS