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 6320-01-436-9228
NSN 5855-01-486-9924
NSN 5950-01-114-1322
NSN 5999-01-067-0690
NSN 5915-01-409-2926
NSN 5975-01-631-4091
NSN 6650-00-252-6271
NSN 5999-01-272-4456
NSN 5999-00-788-1600
NSN 6610-01-527-8006
NSN 6135-00-990-1822
NSN 6145-01-111-9553