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 6105-01-394-8050
NSN 6650-01-406-7765
NSN 5910-00-764-2761
NSN 5960-01-085-1918
NSN 5975-00-321-1146
NSN 6105-01-241-5252
NSN 6105-00-153-7967
NSN 6110-01-054-3032
NSN 5925-01-441-9316
NSN 5990-01-004-6343
NSN 5975-01-519-1435
NSN 6130-01-339-0074