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 6650-01-375-0507
NSN 6145-01-474-5459
NSN 5910-01-361-4674
NSN 6620-01-564-7128
NSN 6135-01-411-3212
NSN 6110-01-206-1063
NSN 5975-01-187-0810
NSN 6620-01-244-3425
NSN 6130-01-433-3175
NSN 6145-01-582-2210
NSN 6110-00-573-1297
NSN 6240-01-531-3695