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 6645-00-372-2618
NSN 5930-01-463-3499
NSN 6105-01-056-5258
NSN 5998-01-199-7547
NSN 6220-01-392-1429
NSN 5930-01-435-8714
NSN 5998-01-092-0940
NSN 5998-01-215-1313
NSN 2925-01-467-7672
NSN 5920-01-177-6352
NSN 5895-00-542-7408
NSN 7035-01-417-6261