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 5910-01-508-3605
NSN 6320-01-439-5264
NSN 6650-01-396-0767
NSN 5960-00-242-6053
NSN 6105-01-443-3787
NSN 6240-01-631-6116
NSN 4140-01-551-7286
NSN 5945-01-382-9224
NSN 5855-00-110-9341
NSN 6135-01-455-7947
NSN 6130-00-400-4399
NSN 6240-01-567-8401