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 5960-00-178-0968
NSN 5960-00-654-7300
NSN 6645-00-079-1430
NSN 5975-01-540-7632
NSN 4140-01-608-3992
NSN 5998-01-515-0074
NSN 6130-01-361-8245
NSN 5895-01-613-7187
NSN 6130-00-395-7220
NSN 6620-01-085-8688
NSN 6685-01-165-0576
NSN 6135-00-027-3914