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 2925-01-214-5333
NSN 5985-00-184-9489
NSN 5990-01-645-2592
NSN 7035-01-285-7413
NSN 6685-01-572-1956
NSN 5965-00-482-0913
NSN 5985-01-394-3359
NSN 5975-01-260-9972
NSN 5935-01-493-2981
NSN 5920-01-445-7000
NSN 5985-01-272-5000
NSN 6685-00-395-3272