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 5905-01-634-0595
NSN 6150-00-740-8011
NSN 6150-01-089-4806
NSN 6685-00-420-2781
NSN 6150-01-417-7383
NSN 5930-01-452-5774
NSN 5965-01-107-8549
NSN 5930-01-463-3204
NSN 6320-01-506-9439
NSN 5945-01-343-4501
NSN 5925-01-532-1173
NSN 6620-00-518-3595