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 5950-00-250-9354
NSN 6150-01-240-0981
NSN 5945-00-350-3387
NSN 5996-00-518-2545
NSN 6685-01-280-9264
NSN 5990-00-065-9154
NSN 2925-01-361-5310
NSN 5915-00-905-7416
NSN 5990-00-893-8998
NSN 4140-00-225-8586
NSN 5930-00-259-4737
NSN 5855-01-285-3483