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 5998-00-839-1350
NSN 5915-01-507-1880
NSN 5905-01-486-9029
NSN 6620-00-956-2605
NSN 5920-01-230-6511
NSN 5835-01-216-1215
NSN 5960-01-243-0007
NSN 5910-00-216-8081
NSN 5835-01-522-9881
NSN 6320-00-925-0558
NSN 5985-01-036-6990
NSN 5835-00-550-7728