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 5895-00-144-8162
NSN 5910-01-272-9471
NSN 5855-00-089-3974
NSN 6645-01-452-3354
NSN 7035-00-392-5417
NSN 5935-01-585-9802
NSN 5915-01-047-4885
NSN 5999-01-197-8160
NSN 5905-00-679-3250
NSN 2925-01-567-8027
NSN 5999-00-125-6829
NSN 5935-01-123-9016