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 6130-01-318-4939
NSN 5999-00-617-0164
NSN 5960-01-132-2975
NSN 5915-01-118-6548
NSN 6650-01-575-1044
NSN 5975-01-336-9956
NSN 7035-01-305-1950
NSN 6150-01-461-9856
NSN 5945-01-020-2226
NSN 5915-01-478-6540
NSN 4140-01-091-0270
NSN 6150-01-391-4934