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 5915-00-294-9419
NSN 5975-00-879-8707
NSN 5998-00-094-7480
NSN 6145-01-033-7816
NSN 5835-01-355-0308
NSN 5950-01-367-4516
NSN 6685-01-271-2934
NSN 7035-01-227-2546
NSN 5999-01-189-7349
NSN 5975-00-761-0206
NSN 5930-01-461-9042
NSN 5930-01-350-4313