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 5990-01-147-5225
NSN 5930-00-823-0279
NSN 5915-01-381-1255
NSN 6650-00-450-3504
NSN 6110-01-158-2900
NSN 6645-01-429-6768
NSN 5945-01-024-9061
NSN 5965-01-300-7417
NSN 5975-01-188-7460
NSN 6620-00-986-0747
NSN 5925-01-411-6028
NSN 6650-00-356-8405