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 5930-01-183-9248
NSN 6240-01-436-4649
NSN 7035-01-443-3052
NSN 5925-01-080-1371
NSN 6110-00-819-4917
NSN 5985-00-517-6300
NSN 6150-00-337-8328
NSN 5990-00-193-3028
NSN 6240-00-827-0889
NSN 5895-01-550-3374
NSN 2925-01-471-4912
NSN 5998-00-397-1782