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 6145-00-038-3369
NSN 5930-01-631-6062
NSN 5990-01-395-4194
NSN 5915-00-683-7472
NSN 5950-00-925-8088
NSN 5990-01-128-3758
NSN 5905-00-141-3882
NSN 4140-01-147-4764
NSN 4140-00-943-7434
NSN 6145-01-188-2789
NSN 6620-00-490-3978
NSN 5985-01-140-8450