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 4140-00-931-1136
NSN 6220-00-061-8076
NSN 6135-00-715-4001
NSN 6220-00-199-9401
NSN 6145-01-491-4557
NSN 6110-00-501-5585
NSN 6320-01-029-4220
NSN 5915-01-400-6125
NSN 5996-01-327-0220
NSN 6240-01-463-8276
NSN 6130-01-607-7479
NSN 5905-01-533-8155