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 6320-00-539-9283
NSN 5996-01-622-0076
NSN 4140-00-152-7092
NSN 5920-01-274-2055
NSN 5998-01-082-3854
NSN 6650-00-963-1692
NSN 6685-01-154-2421
NSN 6620-00-496-8697
NSN 6150-01-400-4067
NSN 5960-01-272-2124
NSN 5950-01-533-8088
NSN 5895-00-129-7129