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 6220-00-437-5732
NSN 5999-01-644-2543
NSN 5835-00-811-4554
NSN 5999-01-175-4903
NSN 5999-01-134-2354
NSN 5925-01-531-8752
NSN 2925-01-054-3190
NSN 5930-01-395-5067
NSN 5950-01-381-2994
NSN 6320-01-425-1417
NSN 5835-00-111-3419
NSN 5945-00-772-0597