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 5990-00-428-1895
NSN 6620-01-506-1003
NSN 5990-00-008-1828
NSN 5990-01-024-9659
NSN 6685-01-585-6794
NSN 6220-01-322-8450
NSN 6610-00-686-5817
NSN 4140-01-148-7070
NSN 6150-01-130-9337
NSN 6610-01-590-2263
NSN 5935-01-367-9123
NSN 6650-01-423-3767