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 6645-00-372-2618
NSN 5905-01-157-0347
NSN 6320-01-506-9439
NSN 5985-00-636-5676
NSN 6620-00-269-5168
NSN 6150-00-539-9812
NSN 5905-00-089-2383
NSN 5998-01-387-4375
NSN 6150-00-278-1060
NSN 6150-01-391-7735
NSN 4140-01-067-4317
NSN 5915-01-462-5900