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 6110-01-591-6486
NSN 5998-01-266-4018
NSN 2925-00-728-8118
NSN 6110-01-452-1121
NSN 6650-01-323-2141
NSN 5905-01-609-5277
NSN 5915-00-665-2854
NSN 5990-01-607-3528
NSN 6110-00-565-5986
NSN 5975-01-454-9228
NSN 6645-01-481-9834
NSN 5935-01-143-3998