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 5999-01-659-0116
NSN 5910-01-206-3959
NSN 5990-01-200-7460
NSN 4140-01-372-2938
NSN 5996-01-336-1479
NSN 6145-00-046-4568
NSN 4140-01-158-0407
NSN 5910-00-132-0034
NSN 5985-00-244-1378
NSN 5915-01-487-7703
NSN 5925-01-258-9623
NSN 6220-01-184-8738