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 5935-01-449-2258
NSN 5996-01-619-4479
NSN 5920-01-646-1676
NSN 5998-01-112-8243
NSN 2925-00-265-7539
NSN 6320-01-032-9703
NSN 6320-01-072-2073
NSN 6645-00-221-7071
NSN 6650-01-517-1094
NSN 6320-01-228-2380
NSN 6620-01-142-8494
NSN 5965-01-421-1244