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 5998-00-113-8683
NSN 5945-01-488-9849
NSN 5998-00-867-1579
NSN 6110-00-989-7474
NSN 6220-01-574-2377
NSN 5998-01-442-8461
NSN 6685-01-512-8345
NSN 5945-00-327-7793
NSN 6645-01-267-4379
NSN 6645-00-433-3075
NSN 6650-00-779-7294
NSN 5835-01-598-8262