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 5990-01-516-9665
NSN 6320-00-893-2857
NSN 5925-01-175-8204
NSN 6620-01-024-7003
NSN 5990-01-037-9801
NSN 6685-01-509-4957
NSN 5935-01-212-4460
NSN 5905-00-676-7473
NSN 6610-01-521-8692
NSN 6620-01-508-1996
NSN 6110-00-578-7243
NSN 5920-01-117-5053