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 6650-00-087-1569
NSN 5990-01-008-2515
NSN 6610-01-262-3467
NSN 6135-01-309-2299
NSN 5910-00-482-9372
NSN 5960-00-736-8568
NSN 6145-01-470-3933
NSN 6620-01-411-9489
NSN 6240-00-190-2903
NSN 5996-01-275-9251
NSN 6610-01-027-8736
NSN 5905-00-336-7809