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 6135-01-113-1507
NSN 5855-00-586-6255
NSN 6620-01-381-6225
NSN 5996-01-413-1413
NSN 6220-01-306-0904
NSN 5855-01-085-5354
NSN 6620-01-192-0543
NSN 6320-00-823-2015
NSN 6645-01-470-4518
NSN 4140-01-461-7885
NSN 6685-01-348-1801
NSN 6130-00-220-5791