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 5998-01-271-8236
NSN 5975-01-388-0808
NSN 6620-01-202-7415
NSN 5950-01-242-6083
NSN 5975-00-144-3195
NSN 6150-00-753-3950
NSN 5905-01-360-1441
NSN 6110-01-142-2550
NSN 5920-01-293-4130
NSN 5990-00-497-5954
NSN 5905-00-933-7406
NSN 6135-01-648-4875