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 5998-01-113-8808
NSN 6105-01-462-8351
NSN 5998-01-416-3185
NSN 5895-00-295-2354
NSN 5996-01-518-3732
NSN 5950-00-490-9175
NSN 5985-01-569-1026
NSN 6145-00-570-0516
NSN 6105-01-568-8393
NSN 5905-00-336-5118
NSN 7035-01-100-9295
NSN 6150-01-303-1353