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 6220-00-325-2740
NSN 6650-01-471-5999
NSN 5905-01-528-7879
NSN 5930-01-113-5929
NSN 5965-00-458-7321
NSN 5935-01-079-8168
NSN 5985-01-044-9741
NSN 5998-01-406-7080
NSN 6645-00-051-8888
NSN 6610-00-832-3137
NSN 5999-00-764-2862
NSN 6130-01-153-8735