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 5996-01-324-4422
NSN 5985-01-529-6488
NSN 5905-01-074-6013
NSN 6110-00-969-4030
NSN 5965-01-627-2606
NSN 5975-00-700-7491
NSN 5925-01-036-8617
NSN 6240-01-645-4797
NSN 6220-01-495-1037
NSN 5920-01-526-7068
NSN 5999-01-625-7076
NSN 6645-01-479-0804