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 5950-00-148-9312
NSN 6220-01-556-2724
NSN 5985-01-258-4032
NSN 5855-00-885-8452
NSN 6130-01-222-1914
NSN 6685-01-435-9697
NSN 5920-01-250-0715
NSN 7035-01-314-7559
NSN 5998-00-670-0369
NSN 4140-01-225-0975
NSN 5985-01-512-6662
NSN 6620-00-186-8220