This is a A-31-1807 O-Ring PN: 31-1807Main Description As Following : A-31-1807 O-Ring P.N: 31-1807 Condensor Line-Outlet Stocked As: A-011N Found in Section & Models : Air Conditioning Parts > Lines/ Hoses, Case-IH TRACTOR: COUGAR, Case-IH TRACTOR: LION, Case-IH TRACTOR: PANTHER, Case-IH TRACTOR: 9110, Case-IH TRACTOR: 9130, Case-IH TRACTOR: 9150, Case-IH TRACTOR: 9170, Case-IH TRACTOR: 9180, Case-IH TRACTOR: 9240, Case-IH TRACTOR: 9250 (S/N