Item 3 is cushion gasket. 2 ea required per flow indicator
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 5925-00-236-9000
NSN 5998-00-410-3734
NSN 5965-01-201-7487
NSN 4140-01-182-5861
NSN 6145-00-382-5115
NSN 6610-01-236-8359
NSN 5990-00-009-3291
NSN 6620-01-386-5914
NSN 5935-01-648-0069
NSN 5935-01-644-5489
NSN 5960-00-078-9500
NSN 5930-01-313-6377