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 5996-01-230-4157
NSN 6110-01-398-1507
NSN 5975-00-241-4127
NSN 5925-01-557-9007
NSN 5920-01-122-6303
NSN 5895-01-605-4296
NSN 6620-01-454-8926
NSN 6320-01-652-3806
NSN 5965-00-752-5823
NSN 6220-00-399-7109
NSN 6240-00-938-8687
NSN 6135-00-152-8729