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 5998-01-579-9881
NSN 5999-01-605-9160
NSN 5910-01-377-0854
NSN 5930-01-426-9130
NSN 5960-01-088-9090
NSN 4140-01-444-3945
NSN 5945-01-556-5893
NSN 5990-01-577-2120
NSN 2925-01-317-6973
NSN 5855-01-199-2046
NSN 5945-01-439-3119
NSN 6135-01-068-0119