01-421-2130
O-ring
24.4mm center hole diameter
01-421-3506
O-ring
Used on quick-don mask adapter. 1.181" center hole diameter
01-421-4267
O-ring
0.504" center hole diameter
01-421-5005
O-ring
Used on evinrude 60 degree v4 and v6 outboard engine. o-ring, fuel manifold
01-421-6293
O-ring
Used on C-17. 0.141" center hole diameter
01-421-6358
O-ring
Used on mk 3 mod 0 light weight dive sys. underwater life support iaw navsea instruction 10560.2b
01-421-6382
O-ring
Used on mk20mod0 uba diving sys. underwater life support iaw navsea instruction 10560.2b