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 6320-01-154-1099
NSN 5985-01-025-6051
NSN 4140-00-473-4913
NSN 5985-00-476-8271
NSN 5835-01-026-6006
NSN 5855-00-411-8688
NSN 5935-01-579-3324
NSN 6220-00-944-4512
NSN 5910-00-755-2669
NSN 6110-00-917-3805
NSN 6220-01-544-6350
NSN 6650-01-576-5658