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 5960-01-553-4557
NSN 5935-00-930-7834
NSN 5910-00-846-0252
NSN 5915-01-184-0397
NSN 5996-01-133-8211
NSN 5895-01-505-7139
NSN 2925-00-789-1106
NSN 2925-00-445-4054
NSN 5975-00-082-0894
NSN 5960-01-486-1996
NSN 5999-00-935-3361
NSN 5895-01-180-9178