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 4140-01-361-5224
NSN 5935-01-443-4192
NSN 5920-01-327-6842
NSN 5945-00-482-5021
NSN 5915-00-561-6528
NSN 2925-01-199-7394
NSN 5905-01-496-8885
NSN 6105-00-163-9279
NSN 5835-00-770-2843
NSN 6685-00-099-9025
NSN 5990-01-172-4553
NSN 5965-00-150-1144