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 5990-01-544-0364
NSN 6220-00-343-0182
NSN 6320-01-193-8606
NSN 6110-01-528-7147
NSN 5855-00-879-5849
NSN 6610-00-915-0574
NSN 6240-01-259-4265
NSN 5855-01-419-5285
NSN 5999-01-406-9394
NSN 6110-00-525-3418
NSN 5920-00-203-5938
NSN 5999-01-116-2638