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 6620-01-064-0366
NSN 5996-01-062-6241
NSN 6650-01-513-2644
NSN 5945-01-166-0403
NSN 5935-00-100-0101
NSN 5905-01-023-8085
NSN 5925-01-004-9293
NSN 6130-01-625-6259
NSN 5895-01-487-6444
NSN 5915-01-400-6125
NSN 5910-01-394-5013
NSN 5999-00-446-8670