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 5910-01-442-4216
NSN 6320-01-019-1028
NSN 6135-01-518-9813
NSN 6610-01-308-1952
NSN 5835-01-331-5735
NSN 6110-00-438-2769
NSN 6320-00-284-1524
NSN 5895-00-209-5456
NSN 5945-00-159-1567
NSN 6130-00-156-4550
NSN 5905-00-285-2866
NSN 5999-01-072-4154