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 5910-01-512-8782
NSN 6620-01-199-7570
NSN 5925-00-473-2622
NSN 5990-01-213-6319
NSN 6620-00-269-5168
NSN 6145-01-512-4838
NSN 6650-00-076-1883
NSN 5905-00-113-7848
NSN 5915-00-304-4926
NSN 5920-01-194-7794
NSN 6320-01-227-2648
NSN 5935-00-353-3293