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 5999-01-443-2001
NSN 5935-01-137-6666
NSN 5998-00-934-1391
NSN 6130-00-798-5514
NSN 5935-01-071-2400
NSN 6105-00-128-1890
NSN 6105-00-408-5552
NSN 6320-01-366-5157
NSN 5960-01-212-8118
NSN 5925-01-354-9726
NSN 7035-01-206-2623
NSN 4140-01-359-7829