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 5925-00-142-0752
NSN 5999-01-021-7037
NSN 2925-01-231-6312
NSN 6650-01-132-6860
NSN 7035-01-365-4087
NSN 5960-01-486-8919
NSN 5910-01-454-9833
NSN 5996-00-678-8507
NSN 6240-00-395-0019
NSN 5985-00-098-1827
NSN 5925-01-571-0564
NSN 5999-01-412-9255