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 5905-01-288-1907
NSN 6145-00-661-0192
NSN 6620-01-292-5072
NSN 5920-01-020-7659
NSN 6685-00-628-9795
NSN 5960-00-498-9034
NSN 6145-00-756-3509
NSN 6320-01-466-4175
NSN 6105-01-388-4514
NSN 6620-00-269-5168
NSN 5925-00-422-5151
NSN 5999-01-615-4413