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 6650-00-283-0978
NSN 6130-01-582-1255
NSN 6130-01-169-9255
NSN 6685-01-111-8712
NSN 5855-00-427-7848
NSN 6240-00-233-3481
NSN 5985-00-107-5383
NSN 5895-01-409-2949
NSN 6320-00-360-1744
NSN 6620-01-029-3705
NSN 6645-01-438-4118
NSN 5960-01-599-9821