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 5905-00-145-6658
NSN 5895-01-578-7925
NSN 6645-01-374-4354
NSN 5935-01-485-1663
NSN 6620-01-416-9882
NSN 5895-00-167-7995
NSN 4140-01-195-7618
NSN 6645-00-155-2398
NSN 5905-01-634-0595
NSN 6220-01-252-3458
NSN 5999-01-455-9402
NSN 6610-01-519-3080