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 6110-01-555-8143
NSN 5998-01-474-4097
NSN 5950-00-387-5741
NSN 6220-01-484-2153
NSN 6110-01-657-6017
NSN 5990-01-411-5930
NSN 5910-00-113-5540
NSN 6105-01-222-1091
NSN 5945-00-145-9802
NSN 6220-01-582-7524
NSN 5895-01-392-2288
NSN 5925-01-560-6306