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 5920-01-591-2410
NSN 6620-00-740-3699
NSN 5925-01-360-5605
NSN 5930-01-442-8012
NSN 6130-00-740-3884
NSN 6610-01-120-7670
NSN 5950-01-046-0387
NSN 5999-00-886-9262
NSN 5950-01-058-2510
NSN 6620-01-580-0883
NSN 5905-01-327-7932
NSN 5990-01-485-0260