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 5975-01-181-5679
NSN 6145-01-224-7228
NSN 6150-01-462-2642
NSN 6105-01-498-3990
NSN 6240-01-501-1267
NSN 5855-01-100-3272
NSN 5998-01-197-7417
NSN 6145-00-054-2915
NSN 4140-01-385-5636
NSN 6685-01-422-1571
NSN 5935-01-576-3751
NSN 5895-00-027-8382