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 6620-01-122-8886
NSN 6105-00-147-2819
NSN 5985-00-205-2922
NSN 5965-00-665-2156
NSN 6240-01-441-3606
NSN 5965-01-415-7080
NSN 5905-01-288-0553
NSN 7035-01-560-1065
NSN 6110-00-315-9894
NSN 5905-01-095-6331
NSN 5990-01-294-6198
NSN 6110-01-243-7833