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 5920-00-480-1228
NSN 5930-01-142-2571
NSN 5975-01-319-0927
NSN 6145-01-228-6267
NSN 5945-01-569-1325
NSN 6220-00-910-0320
NSN 5910-00-564-2473
NSN 6685-00-279-3620
NSN 2925-01-643-8395
NSN 5985-01-125-2573
NSN 6240-00-426-1972
NSN 5915-01-336-0813