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 5990-01-644-3095
NSN 6145-00-925-2004
NSN 6685-00-888-8227
NSN 5910-01-467-3009
NSN 4140-01-555-6082
NSN 6685-01-484-9579
NSN 5998-01-093-0505
NSN 6650-00-335-5017
NSN 5965-01-240-0233
NSN 5915-00-122-4849
NSN 6130-01-600-6548
NSN 5935-01-502-6935