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 4140-00-660-8699
NSN 5965-01-493-5534
NSN 7035-01-602-2524
NSN 6320-01-618-7800
NSN 4140-01-387-0331
NSN 7035-01-432-7705
NSN 6105-01-091-7461
NSN 5835-01-657-0245
NSN 5920-01-512-4829
NSN 6110-01-380-4380
NSN 5855-01-435-5548
NSN 5905-01-256-8829