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 5965-01-393-2054
NSN 5855-01-561-5255
NSN 5945-00-243-9365
NSN 6620-00-490-3978
NSN 6135-00-660-8654
NSN 6130-01-361-8628
NSN 6650-00-668-5703
NSN 5925-01-069-1451
NSN 5975-00-374-5245
NSN 6220-01-380-7148
NSN 6135-01-322-4655
NSN 5835-01-651-7208