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 5910-01-252-8820
NSN 5999-01-085-6244
NSN 5935-01-328-7995
NSN 5905-01-104-0992
NSN 5996-00-632-0117
NSN 5910-01-357-7314
NSN 5915-01-502-6623
NSN 5945-01-408-1089
NSN 5925-01-212-7249
NSN 6130-01-230-3210
NSN 6320-01-445-5893
NSN 5998-01-255-2862