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 5925-00-736-0425
NSN 6105-01-437-8341
NSN 6220-00-724-6191
NSN 6685-00-959-6767
NSN 2925-00-698-4882
NSN 6620-01-603-6442
NSN 6130-00-450-3928
NSN 5910-01-234-8308
NSN 5895-01-529-7926
NSN 6135-00-432-8779
NSN 6220-01-630-2010
NSN 5930-01-328-3004