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 6650-01-588-3486
NSN 5895-00-121-3366
NSN 6240-01-643-5990
NSN 5930-01-371-0958
NSN 4140-00-215-8593
NSN 2925-01-448-2880
NSN 5910-01-068-3625
NSN 5975-00-016-9774
NSN 5910-00-203-0566
NSN 5965-01-043-9357
NSN 5985-01-233-7252
NSN 5998-01-070-4452