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 5935-00-639-1382
NSN 5990-00-009-3291
NSN 6150-01-132-9273
NSN 6320-01-441-2438
NSN 5990-01-527-7640
NSN 5999-01-385-5862
NSN 6220-01-206-9023
NSN 5855-01-107-5925
NSN 6650-01-150-8101
NSN 7035-01-620-4656
NSN 6620-01-074-2882
NSN 5990-00-103-0528