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 5990-01-432-4984
NSN 5920-01-528-7196
NSN 5996-01-086-5290
NSN 4140-00-790-4691
NSN 5985-00-347-1360
NSN 5925-00-466-7308
NSN 5996-00-034-0918
NSN 7035-01-173-1513
NSN 5910-00-298-1833
NSN 6685-00-846-9848
NSN 6130-01-274-9444
NSN 5915-00-279-2973