Styl b38a is closest but aperture is special shaped.
No other part numbers with same form, fit, and function found.
A deformable material which prevents the passage of matter through the joint formed when two faces are joined. It may be metallic or nonmetallic, lubricated or impregnated, solid or hollow cross section. It may be made to any predetermined dimension and shape. Excludes flat disks, items made of felt material and items having joints. For round metal and plastic items with an aperture and a solid rectangular cross section, see washer, flat; shim; bearing, washer, thrust; and spacer ring. Excludes disk, valve; seal, nonmetallic angle; seal, nonmetallic channel; seal, nonmetallic special shaped section; shielding gasket, electronic; and ring, sealing jar.
NSN 5960-01-423-1085
NSN 5975-01-004-0955
NSN 5835-01-606-8768
NSN 5910-01-095-6382
NSN 6240-01-348-0057
NSN 6240-01-502-7883
NSN 5930-01-584-2795
NSN 5835-01-504-0837
NSN 6135-00-567-1322
NSN 4140-01-168-8796
NSN 5910-01-592-2746
NSN 5905-01-487-0931