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 5975-01-607-1109
NSN 5930-00-345-0228
NSN 6685-01-592-3247
NSN 6105-01-427-2336
NSN 5990-00-369-5212
NSN 6220-01-612-4222
NSN 6645-01-214-2561
NSN 7035-01-322-8180
NSN 6320-01-364-1840
NSN 6105-01-386-1529
NSN 5975-01-615-2451
NSN 6320-00-466-0371