Description Manuals Videos Articles Clemco 21561 - O-ring, .864 ID x 1.004 OD Apollo 60 HP Item # 21 Customers Also Viewed Piston, u-seal, S/King #100018 $48.50 Piston, diaphragm, S/King #100014 $51.41 Pipe Tee - 1/4 inch #01785 $7.76