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 5905-01-521-8970
NSN 5895-01-365-7365
NSN 5895-01-613-0956
NSN 6620-00-351-9949
NSN 6650-00-989-1103
NSN 2925-00-504-2363
NSN 5998-01-634-0604
NSN 5915-00-434-6795
NSN 4140-01-648-2249
NSN 6110-00-877-9603
NSN 5895-01-296-4692
NSN 6105-00-356-7806