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 5915-01-265-3960
NSN 5920-00-839-2318
NSN 5905-00-999-0862
NSN 5920-00-705-2916
NSN 6130-01-537-8771
NSN 5905-01-397-8374
NSN 5905-01-075-5367
NSN 5925-00-256-4884
NSN 6110-01-113-1581
NSN 6240-01-452-5005
NSN 5950-00-213-4397
NSN 5920-01-184-6257