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 6620-00-001-1398
NSN 6610-01-263-8999
NSN 5996-01-243-4072
NSN 6135-01-528-6896
NSN 5905-00-377-3793
NSN 6610-01-444-0953
NSN 4140-00-417-8838
NSN 6105-01-433-2120
NSN 5915-01-321-8119
NSN 5945-01-540-1942
NSN 5920-01-608-3868
NSN 5895-01-454-9139