LOT (4) EA. ON (1) PLT. NAVAL SERVICE WAR FAIR CENTER, PLAIN SEAL, P/ N: 1682151P1, CROSS SECTIONAL SHAPE, STYLE L9 SINGLE LIP, 36. 460 IN. MINIMUM AND 36. 470 IN. , SEAL WIDTH 1. 000 IN. NOMINAL, HOUSING BORE DIAMETER 38. 460 MAX, MATERIAL STEEL CORROSION RESITING SPRING.