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 6150-01-468-0296
NSN 2925-00-928-5931
NSN 4140-01-321-7363
NSN 5990-01-218-5160
NSN 5895-01-324-5161
NSN 5998-00-653-8765
NSN 6650-01-175-0841
NSN 6610-01-290-2627
NSN 5925-00-937-9582
NSN 5945-01-474-6463
NSN 6110-01-490-3728
NSN 6240-01-455-0088