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 7035-00-232-4043
NSN 6130-01-218-4250
NSN 6110-00-612-7146
NSN 5945-01-038-6879
NSN 6620-00-185-1671
NSN 6685-01-023-7000
NSN 5960-01-167-6689
NSN 5975-00-441-7551
NSN 6130-01-237-2358
NSN 5855-01-634-0259
NSN 5950-00-730-0471
NSN 5920-01-056-7603