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 5905-00-476-0215
NSN 5835-01-416-6455
NSN 6320-01-407-1183
NSN 6320-00-521-9350
NSN 6650-00-186-5966
NSN 6645-00-816-1707
NSN 6220-00-081-6429
NSN 5905-01-329-9438
NSN 6320-01-084-8821
NSN 6650-00-564-7322
NSN 5915-01-431-4256
NSN 2925-01-492-9863