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 6150-00-446-7206
NSN 6110-01-156-6982
NSN 6620-01-426-2220
NSN 5998-00-246-6895
NSN 6620-01-259-2411
NSN 5975-01-386-3061
NSN 6145-01-566-4795
NSN 5930-00-449-5560
NSN 6650-01-339-5257
NSN 5895-00-995-2336
NSN 6220-01-222-2068
NSN 5855-01-295-2313