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 6685-01-569-0310
NSN 4140-00-541-9077
NSN 2925-01-511-5359
NSN 5996-01-624-5388
NSN 7035-01-307-5366
NSN 5999-00-959-4415
NSN 5910-01-113-6636
NSN 5998-01-127-6822
NSN 6650-01-339-9462
NSN 6685-01-380-2014
NSN 5910-00-867-8078
NSN 5910-01-369-3188