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 5975-01-415-2357
NSN 5930-01-053-3423
NSN 5990-00-534-9798
NSN 4140-01-602-2454
NSN 2925-00-964-7128
NSN 6110-01-127-0952
NSN 6650-01-361-9336
NSN 5965-01-488-4332
NSN 6320-01-466-4175
NSN 6685-00-889-1579
NSN 5925-01-117-6759
NSN 5945-00-328-1042