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 5935-01-116-8486
NSN 5960-00-258-9292
NSN 5985-00-977-3228
NSN 5998-00-788-3260
NSN 5999-00-969-2669
NSN 5895-01-266-6131
NSN 6220-00-003-5311
NSN 5998-01-470-2006
NSN 5975-00-951-2495
NSN 6220-01-273-3896
NSN 2925-01-430-4206
NSN 6620-01-432-3768