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 5965-00-253-1302
NSN 5945-01-634-0588
NSN 6610-01-131-5714
NSN 5999-00-554-4285
NSN 6620-01-565-4080
NSN 5990-00-339-2084
NSN 5925-01-122-8135
NSN 5999-01-392-7840
NSN 5855-01-118-2210
NSN 6105-00-794-0255
NSN 5920-01-029-3813
NSN 6150-00-899-5690