This is a A-D9NNN710CA Seal, PTO PN: D9NNN710CAMain Description As Following : A-D9NNN710CA Seal, PTO P.N: D9NNN710CA Inside Diameter: 1.42" (36.07 mm)Outside Diameter: 2.5" (63.65 mm)Thickness: 0.30" (7.84 mm) Replaces: 81819064 FORD Found in Section & Models : PTO Parts > PTO and Related Parts, Ford / New Holland TRACTOR: 3600 (W/ 3 CYL, 1/75-12/81), Ford / New Holland TRACTOR: 4100 (W/ 3 CYL, 1/75-12/81), Ford / New Holland TRACTOR: 4600 (W/ 3 CYL, 1/75-12/81), Ford / New Holland TRACTOR: 5000 (W/ SINGLE SPEED TRANSMISSION), Ford / New Holland TRACTOR: 5110 (W/ 4 CYL, 5/84-10/91), Ford / New Holland TRACTOR: 5600 (W/ SINGLE SPEED TRANSMISSION), Ford / New Holland TRACTOR: 5610 (W/ SINGLE SPEED TRANSMISSION), Ford / New Holland TRACTOR: 5900 (W/ 4 CYL, 5/85-12/93), Ford / New Holland TRACTOR: 6600 (W/ SINGLE SPEED TRANSMISSION), Ford / New Holland TRACTOR: 6610 (W/ SINGLE SPEED TRANSMISSION), Ford / New Holland TRACTOR: 6610O (W/ 4 CYL, 1/81-10/91), Ford / New Holland TRACTOR: 6700 (W/ SINGLE SPEED TRANSMISSION), Ford / New Holland TRACTOR: 6710 (W/ SINGLE SPEED TRANSMISSION), Ford / New Holland TRACTOR: 6810 (W/ 4 CYL, 4/89-10/91), Ford / New Holland TRACTOR: 7000 (W/ SINGLE SPEED TRANSMISSION), Ford / New Holland TRACTOR: 7410 (W/ 4 CYL, 4/89-10/91), Ford / New Holland TRACTOR: 7600 (W/ SINGLE SPEED TRANSMISSION), Ford / New Holland TRACTOR: 7610 (W/ SINGLE SPEED TRANSMISSION), Ford / New Holland TRACTOR: 7700 (W/ SINGLE SPEED TRANSMISSION), Ford / New Holland TRACTOR: 7710 (W/ SINGLE SPEED TRANSMISSION) Associated Items : New Also A-FO-O-2600UP, A-FO-P-2600, A-FRM-FO-MID, A-MNL18259, A-SMFO41, A-FO-O-2-5000, A-FO-O-2000, A-FO-O-2600UP, A-FO-P-234000, A-FO-P-2600, A-FO-S-2000, A-FRM-FO-MID, A-SMFO41, A-FO-O-2600UP, A-FO-P-2600, A-FRM-FO-MID, A-SMFO41, A-FO-O-2-5000, A-FO-O-2000, A-FO-P-MAJOR And : Inside Diameter: 1.42" (36.07 mm) Outside Diameter: 2.5" (63.65 mm) Thickness: 0.30" (7.84 mm)