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 5935-01-425-1921
NSN 5990-00-568-4940
NSN 5965-00-775-6496
NSN 5935-01-433-2766
NSN 6145-01-167-9859
NSN 6320-00-731-6134
NSN 6620-01-383-7519
NSN 5905-00-243-8930
NSN 6685-00-834-0494
NSN 5915-01-485-0222
NSN 5965-01-461-2850
NSN 5945-00-570-9251