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 2925-01-185-9144
NSN 2925-01-125-9169
NSN 6650-01-543-0588
NSN 6320-00-483-0451
NSN 7035-01-507-2590
NSN 5999-01-647-8896
NSN 6685-01-449-7564
NSN 5990-01-116-2181
NSN 5998-00-017-4694
NSN 6220-00-205-2040
NSN 5996-01-047-5953
NSN 5935-00-233-0461