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 5945-01-437-7004
NSN 6620-01-228-1571
NSN 6130-01-439-8727
NSN 5960-01-601-5565
NSN 6150-01-444-2315
NSN 5960-00-804-2215
NSN 6145-01-289-0732
NSN 5920-01-265-1288
NSN 6105-01-428-7811
NSN 6220-01-426-8824
NSN 6220-00-781-0451
NSN 6220-01-041-0628