O-Ring, 2.500" ID x .139" Thk, Side Cover, Start Year: 01/01/1953

Used in models:2130, 4140, 4030, 4400, 3500, 4040, 4130, 3400, 4410, 1871, 335, 1841, 1881, 1821, 1801, 4610SU, 1811, 2030, 532, 310-SERIES, 2110TR, 601, 2600R, 3910V, 681, 3150, 650, 531, 2100, 3600, 3100, 850, 4110V, 334, 2300, 2310, 621, 4121, 4600SU, 3000-SERIES, 2120, 860, 3110, 3910R, 501, 4131, 2910, 630, 2131, 3055, 620, 2031, 3610, 800, 541, 671, 3300, 2610, 3610NO, 660, 3610V, 3600R, 840, 4000-SERIES, 3330, 530A, 2111, NAA, 3900, 3600N, 640, 2000-SERIES, 230A, 611, 2600V, 861, 641, 8N, 4110O, 820, 3600NO, NAB, 234, 4031, 851, 661, 3310, 631, 651, 233, 4120, 4610V, 2600N, 3120, 3600V, 2150, 4110TR