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 5895-01-491-7410
NSN 5935-00-033-4505
NSN 6110-00-072-9394
NSN 5996-00-226-5364
NSN 5950-01-037-1922
NSN 5925-01-165-2923
NSN 5950-00-316-3533
NSN 6150-00-962-2919
NSN 6135-00-471-5356
NSN 5990-01-425-2175
NSN 5905-00-111-4734
NSN 5960-01-219-5504