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 6130-01-163-8834
NSN 7035-00-523-7492
NSN 5930-01-422-0342
NSN 6150-01-355-1228
NSN 5999-00-283-5393
NSN 5905-00-479-8214
NSN 5960-01-364-1318
NSN 6135-01-512-8740
NSN 6150-00-942-4917
NSN 5925-01-236-8070
NSN 5996-01-267-5388
NSN 6320-00-194-4252