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 5950-01-336-2364
NSN 5990-01-364-0813
NSN 5965-00-504-6753
NSN 7035-01-322-8180
NSN 5910-00-979-8354
NSN 5975-01-437-8377
NSN 5999-00-810-0176
NSN 6645-01-056-3417
NSN 6130-01-537-0159
NSN 6685-00-244-1029
NSN 5975-01-158-7483
NSN 6320-01-225-9963