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 5910-00-608-2931
NSN 5945-00-073-9557
NSN 7035-01-038-9970
NSN 4140-00-994-7145
NSN 6240-01-332-9066
NSN 5965-01-181-5706
NSN 5905-01-140-2476
NSN 6645-01-385-7033
NSN 5998-01-569-6946
NSN 5960-01-624-1170
NSN 5965-01-130-1965
NSN 5930-00-674-7968