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 5999-01-041-8971
NSN 6145-01-381-2529
NSN 5965-01-630-5956
NSN 6135-00-221-4720
NSN 5990-01-376-0405
NSN 5905-00-948-9389
NSN 5965-01-559-9676
NSN 6685-01-611-0157
NSN 5965-01-453-3062
NSN 6105-01-630-4882
NSN 6320-01-511-1526
NSN 6105-01-504-4368