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 6620-01-441-0240
NSN 5996-00-265-7067
NSN 5975-01-600-0155
NSN 6685-01-288-7592
NSN 6650-00-942-1231
NSN 5998-01-624-3470
NSN 7035-01-555-9415
NSN 5835-00-518-4507
NSN 6645-00-581-9239
NSN 5945-01-048-7718
NSN 6130-00-350-1512
NSN 6110-01-382-5790