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 5895-00-472-3985
NSN 6135-00-334-4500
NSN 6240-00-326-2966
NSN 5895-00-707-3386
NSN 6105-01-603-5076
NSN 5985-00-430-1583
NSN 6320-01-192-0332
NSN 5999-01-090-0493
NSN 6320-01-359-3921
NSN 5965-01-283-2531
NSN 5910-01-383-1612
NSN 5950-01-493-6123