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 5985-00-244-1378
NSN 5920-01-104-4332
NSN 5925-00-893-8566
NSN 6135-01-391-6515
NSN 6150-01-486-2515
NSN 5996-01-477-1157
NSN 5998-00-990-0820
NSN 6610-01-330-7839
NSN 5990-01-065-0492
NSN 6105-01-111-8319
NSN 5905-01-273-2510
NSN 6320-01-088-1109