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 5935-01-515-4426
NSN 5895-01-044-5425
NSN 6320-01-411-7469
NSN 5996-00-876-3164
NSN 5930-01-173-0835
NSN 5999-00-768-0947
NSN 5835-01-597-4820
NSN 6130-00-243-5284
NSN 5930-00-459-1270
NSN 6320-01-290-5271
NSN 6130-00-329-7773
NSN 6220-00-103-3419