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 6135-01-596-8904
NSN 2925-00-564-1692
NSN 5965-01-480-3096
NSN 5835-00-233-6327
NSN 5935-00-111-3431
NSN 5945-00-088-8789
NSN 5945-01-301-6599
NSN 5920-01-321-5130
NSN 6610-00-350-1091
NSN 6645-01-495-0939
NSN 5965-01-413-9205
NSN 6110-00-196-5346