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 5950-01-277-1353
NSN 5855-01-377-7112
NSN 6130-01-135-8874
NSN 6645-00-818-9408
NSN 5999-00-162-8932
NSN 6240-01-302-1624
NSN 6220-01-208-5556
NSN 5999-01-523-3097
NSN 6240-00-421-1862
NSN 5910-01-416-7721
NSN 6620-01-446-2258
NSN 7035-01-072-0611