O-Ring, .812" ID x .139" Thk, Start Year: 01/01/1959

Used in models:2130, 4140, 4030, 755B, 4040, 4130, 6500, 750, 1871, 1841, 1881, 1821, 1801, 1811, 2030, 7500, 755A, 2110TR, 601, 681, 961, TW20, 600, 8630, 8000-SERIES, 9200, TW5, FMD, TW10, TW30, 621, 4121, 981, 2120, 9000-SERIES, 701, 700, 501, 4131, 8600, 2131, 2031, 671, 8530, 9600, TW25, 741, 8830, 4000-SERIES, 950, 2111, 971, 8700, 771, 740, 8200, 2000-SERIES, 611, 861, 951, 641, 941, 4031, 851, 661, 631, 901, TW15, 9700, 651, TW35, 4120, FSM, 4110TR