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 6145-01-486-7175
NSN 6135-00-203-9645
NSN 6650-01-057-2596
NSN 6135-01-282-4326
NSN 5960-01-293-1571
NSN 5835-00-165-3069
NSN 6135-01-560-5853
NSN 5930-01-251-3512
NSN 5950-00-765-7024
NSN 6130-01-551-9412
NSN 6645-01-528-7152
NSN 5975-01-130-3163