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 4140-00-103-0064
NSN 6685-01-044-6366
NSN 5999-00-596-8745
NSN 5855-01-293-7444
NSN 6105-00-003-6141
NSN 6220-01-200-8985
NSN 5950-00-793-5818
NSN 5975-00-222-4109
NSN 5935-01-432-7400
NSN 6220-01-302-5249
NSN 6645-01-569-5729
NSN 6685-00-338-4687