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 5965-00-170-5254
NSN 5920-01-101-7987
NSN 4140-01-634-0330
NSN 6220-01-301-5411
NSN 5835-01-123-8305
NSN 5930-01-356-4067
NSN 5999-01-064-2720
NSN 6610-00-155-1334
NSN 5925-00-660-7589
NSN 5895-01-432-1279
NSN 5895-01-090-0567
NSN 5998-01-529-0325