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 6135-00-087-0333
NSN 7035-01-213-5590
NSN 4140-00-679-9512
NSN 6105-01-527-2890
NSN 6130-00-596-9565
NSN 5960-00-853-0056
NSN 5925-01-504-7731
NSN 5945-01-457-0286
NSN 6685-00-543-1409
NSN 5935-01-322-8135
NSN 5935-00-888-5615
NSN 6150-01-233-1113