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 5925-00-905-5135
NSN 6645-01-508-0345
NSN 5935-00-960-0116
NSN 5915-00-081-3406
NSN 6610-01-477-6476
NSN 5910-00-831-5234
NSN 5910-00-907-8751
NSN 6320-01-436-9228
NSN 6650-01-020-3645
NSN 5925-01-535-5178
NSN 6620-01-389-3324
NSN 6645-01-170-5402