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 5835-01-104-8914
NSN 6240-01-615-7722
NSN 5835-01-545-6467
NSN 5965-00-929-6173
NSN 6610-00-909-6218
NSN 5975-01-319-0927
NSN 5915-01-397-9978
NSN 5999-01-410-2867
NSN 6620-01-281-3542
NSN 6320-01-547-2743
NSN 5990-00-230-8981
NSN 6110-00-790-5533