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 4140-00-529-7463
NSN 5998-00-939-8688
NSN 5965-01-630-5956
NSN 4140-01-591-5180
NSN 2925-01-408-6205
NSN 2925-01-518-3453
NSN 5925-01-289-5871
NSN 5930-01-245-1570
NSN 6220-01-544-5793
NSN 6220-01-611-7723
NSN 2925-01-594-5385
NSN 5905-00-526-9582