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 6620-01-527-0664
NSN 5945-00-499-7237
NSN 5905-01-562-7572
NSN 6135-00-461-3590
NSN 6110-01-379-8526
NSN 5998-01-209-6480
NSN 5945-01-299-7846
NSN 5996-00-800-7628
NSN 6220-01-474-3967
NSN 6320-01-366-5157
NSN 6620-01-364-0195
NSN 4140-01-584-0930