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 5950-01-100-3263
NSN 5990-01-362-5373
NSN 6130-01-113-2529
NSN 6110-00-631-3067
NSN 6105-00-527-2193
NSN 5920-01-594-6994
NSN 7035-00-470-4977
NSN 5975-01-306-9077
NSN 6220-00-472-1706
NSN 5985-00-686-7663
NSN 6650-01-411-3904
NSN 2925-01-123-2235