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 5998-01-605-0426
NSN 5930-01-430-2510
NSN 5915-00-518-1644
NSN 6110-00-018-7046
NSN 6650-01-282-5805
NSN 7035-01-309-6709
NSN 6145-00-340-6698
NSN 5935-00-022-9148
NSN 6130-01-498-4932
NSN 5855-01-114-3513
NSN 5998-01-032-4391
NSN 5930-00-813-6461