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 5945-01-564-6035
NSN 5999-01-357-1093
NSN 7035-01-438-2108
NSN 7035-01-219-7987
NSN 5925-01-158-9057
NSN 5985-01-516-3160
NSN 4140-00-736-8813
NSN 6645-00-177-4729
NSN 6650-01-421-0838
NSN 4140-01-441-8568
NSN 5910-01-487-3735
NSN 5915-01-461-0037