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 6240-00-929-0585
NSN 6145-01-024-9466
NSN 5935-00-189-5601
NSN 6620-01-097-1038
NSN 6150-01-477-8474
NSN 5935-00-654-9388
NSN 5920-00-162-2218
NSN 5930-01-453-8417
NSN 5835-00-185-4919
NSN 6685-01-112-3224
NSN 5925-01-550-8027
NSN 6685-01-228-5332