This is a A-T26904 O-Ring, Rockshaft Housing (10/Pack) PN: T26904Main Description As Following : A-T26904 O-Ring, Rockshaft Housing (10/Pack) P.N: T26904 Dim A (1): Durometer: 70Dim B (2): Standard Number Size: SPLInside Diameter: 2.087"Outside Diameter: 2.599"Replaces: R26863Thickness: .256" Found in Section & Models : Hitch & Drawbar Parts > Rockshaft Cylinders and Parts, John Deere TRACTOR: 1020, John Deere TRACTOR: 1030, John Deere TRACTOR: 1030OU, John Deere TRACTOR: 1030VU, John Deere TRACTOR: 1035, John Deere TRACTOR: 1035EF, John Deere TRACTOR: 1035EV, John Deere TRACTOR: 1040, John Deere TRACTOR: 1040V, John Deere TRACTOR: 1120, John Deere TRACTOR: 1130, John Deere TRACTOR: 1140, John Deere TRACTOR: 1140F, John Deere TRACTOR: 1140V, John Deere TRACTOR: 1350, John Deere TRACTOR: 1550, John Deere TRACTOR: 1630, John Deere TRACTOR: 1630OU, John Deere TRACTOR: 1630VU, John Deere TRACTOR: 1635 Associated Items : New Also A-FRM-JD, A-JD-O-OMR48388, A-JD-O-OMT26335, A-JD-S-SM2071, A-SMJD37, A-FRM-JD, A-JD-O-OML29383, A-JD-O-OMR71859, A-JD-O-OMR71859, A-FRM-JD, A-JD-P-PC1289, A-JD-S-TM1051, A-FRM-JD, A-JD-O-OMR48388, A-JD-O-OMT26335, A-JD-S-TM1044, A-SMJD37, A-FRM-JD, A-JD-O-OMR50675, A-JD-P-PC1289 And : Dim A (1): Durometer: 70 Dim B (2): Standard Number Size: SPL Inside Diameter: 2.087" Outside Diameter: 2.599" Replaces: R26863 Thickness: .256"