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 4140-00-516-5002
NSN 6620-01-298-9316
NSN 6645-00-244-0359
NSN 5990-00-081-3937
NSN 6105-00-245-2587
NSN 6145-01-196-2636
NSN 5950-01-025-6732
NSN 5998-01-599-8676
NSN 7035-01-648-5169
NSN 6145-01-350-3532
NSN 4140-01-386-5630
NSN 6240-00-189-2762