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 5945-00-791-5838
NSN 5905-00-991-6061
NSN 5996-00-269-2655
NSN 2925-00-411-6324
NSN 6620-00-862-5567
NSN 5999-01-424-0219
NSN 5910-01-545-5414
NSN 6220-01-206-9812
NSN 5975-00-922-5480
NSN 6650-01-600-4843
NSN 2925-01-652-9424
NSN 5960-01-204-5820