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 6220-01-578-6554
NSN 5960-01-229-6324
NSN 5835-01-201-1000
NSN 5910-01-328-7375
NSN 5935-01-316-8412
NSN 6620-01-481-1358
NSN 5905-01-322-5961
NSN 5950-00-521-1209
NSN 6620-01-091-3722
NSN 5855-01-010-4921
NSN 5910-01-241-3548
NSN 6650-01-194-5498