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 6650-01-433-3056
NSN 5915-01-381-7404
NSN 5950-01-115-4323
NSN 5920-00-493-8307
NSN 5910-01-497-2174
NSN 5895-01-421-4487
NSN 5835-01-226-0714
NSN 4140-01-439-1375
NSN 6220-01-605-9623
NSN 5895-01-623-1295
NSN 5905-00-994-0372
NSN 5905-00-079-1144