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 5990-01-449-7090
NSN 5895-01-465-3338
NSN 5835-01-056-9303
NSN 5999-01-606-2594
NSN 5945-01-441-1861
NSN 6685-01-426-8929
NSN 6135-01-616-3510
NSN 6105-00-518-1854
NSN 5935-01-409-1120
NSN 5960-00-237-2436
NSN 6135-01-395-9089
NSN 5975-01-570-2376