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 5998-01-473-5100
NSN 5910-01-633-9963
NSN 5930-01-496-9655
NSN 5905-01-400-5968
NSN 5985-00-419-0342
NSN 6130-00-133-3521
NSN 6685-00-972-3246
NSN 5985-01-117-6096
NSN 5925-00-085-9076
NSN 6145-00-278-0697
NSN 5990-01-612-5323
NSN 5990-01-649-0635