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 5950-00-740-8897
NSN 6620-00-375-0393
NSN 6220-01-246-4285
NSN 2925-01-105-7850
NSN 6320-00-110-8005
NSN 5895-00-117-1030
NSN 6645-00-233-4286
NSN 5905-00-968-0415
NSN 6130-00-843-5087
NSN 5990-01-124-9063
NSN 6220-00-558-2147
NSN 5998-01-596-0072