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 6685-01-449-7564
NSN 6320-01-352-5653
NSN 6110-01-334-5235
NSN 6620-00-169-1609
NSN 5935-01-453-5416
NSN 5910-00-156-7293
NSN 5895-01-039-0435
NSN 6240-01-273-7426
NSN 6610-01-295-6327
NSN 5960-00-245-0163
NSN 5925-00-900-5354
NSN 5998-00-361-8697