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 5998-01-465-5925
NSN 6135-01-386-5709
NSN 5930-00-802-6839
NSN 5950-01-524-3976
NSN 5895-01-167-8905
NSN 7035-01-609-7341
NSN 5950-01-282-0965
NSN 5990-00-808-2184
NSN 5930-01-534-2217
NSN 6135-01-142-2417
NSN 6130-01-481-3599
NSN 6320-00-360-1744