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 5915-01-047-4885
NSN 5855-01-517-4252
NSN 5960-01-225-9914
NSN 5930-00-808-2983
NSN 6110-01-310-8983
NSN 5855-01-180-5369
NSN 5935-01-484-4832
NSN 5835-00-145-8926
NSN 6220-00-738-8368
NSN 6130-00-017-0011
NSN 5925-01-048-7093
NSN 5925-01-498-5089