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 5965-01-301-2553
NSN 6645-00-332-2710
NSN 6105-00-043-2566
NSN 6685-01-537-4115
NSN 6220-01-305-3880
NSN 6645-01-261-6903
NSN 5996-01-290-4844
NSN 4140-01-493-9653
NSN 4140-00-725-4012
NSN 5915-00-563-0976
NSN 5945-00-851-3553
NSN 5950-01-579-9960