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 6320-01-255-2096
NSN 6685-01-197-8799
NSN 5930-01-599-5135
NSN 5990-01-212-2037
NSN 5965-00-035-4556
NSN 5975-01-500-8352
NSN 5965-01-112-8758
NSN 6610-00-081-2365
NSN 5945-00-596-2665
NSN 5910-01-099-4968
NSN 5910-00-914-2488
NSN 6240-00-926-1213