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 5945-00-438-9628
NSN 5910-01-417-7711
NSN 5945-01-432-9125
NSN 5945-00-949-6474
NSN 5855-01-392-1110
NSN 6150-00-244-4618
NSN 6645-01-458-8379
NSN 5895-01-383-6473
NSN 5855-00-012-1958
NSN 5935-00-155-4662
NSN 5935-00-803-6254
NSN 7035-00-215-3272