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 6645-00-274-1279
NSN 5910-00-081-8768
NSN 5835-01-424-4577
NSN 5999-00-482-5608
NSN 5999-00-518-1007
NSN 5910-00-849-2991
NSN 6145-01-209-3830
NSN 6105-01-260-9151
NSN 6320-00-270-8222
NSN 6240-00-082-1142
NSN 6320-00-456-2092
NSN 5925-00-110-9266