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 5905-00-959-0559
NSN 5855-01-569-2553
NSN 6105-00-449-5301
NSN 5950-01-586-3648
NSN 5998-01-098-8525
NSN 7035-01-420-5404
NSN 5985-01-501-5908
NSN 5945-01-541-4827
NSN 5965-00-023-0944
NSN 5855-00-256-5562
NSN 6130-01-223-6139
NSN 2925-00-105-3907