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 5998-00-706-8544
NSN 5935-01-153-2662
NSN 5905-01-097-0728
NSN 4140-01-188-5538
NSN 5910-00-230-1778
NSN 5910-00-240-5960
NSN 6150-00-552-7372
NSN 5975-01-478-3514
NSN 5950-01-481-4173
NSN 5895-01-250-2813
NSN 6135-00-347-0595
NSN 6145-01-642-6012