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 5965-01-142-1807
NSN 6610-01-265-1824
NSN 5990-00-879-9187
NSN 6620-01-519-2628
NSN 5855-01-255-1688
NSN 6130-01-603-3080
NSN 5905-00-104-5869
NSN 5998-01-581-3650
NSN 6110-00-359-5571
NSN 5855-01-110-9564
NSN 6130-01-321-9116
NSN 5965-01-332-6693