A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5990-01-183-6478
NSN 4140-01-442-3063
NSN 6240-01-650-3757
NSN 5910-00-515-3586
NSN 5998-00-109-9691
NSN 5935-01-457-8621
NSN 6650-00-423-2178
NSN 5996-01-275-0706
NSN 5999-01-192-9914
NSN 6135-01-204-8712
NSN 5925-00-321-8040
NSN 7035-01-462-1423