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 5990-01-546-1649
NSN 5975-00-233-6301
NSN 6145-00-807-8431
NSN 5895-01-371-2688
NSN 5985-00-661-2263
NSN 5910-00-245-4643
NSN 7035-01-026-1171
NSN 5935-01-577-1024
NSN 5935-01-010-0616
NSN 6620-01-054-9346
NSN 6220-01-415-5698
NSN 6105-00-707-2743