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 6610-01-645-7515
NSN 6105-01-508-7921
NSN 5990-01-436-7191
NSN 6130-00-245-8733
NSN 5998-01-326-1322
NSN 5945-01-199-5603
NSN 6145-01-416-7386
NSN 6110-01-554-7406
NSN 6685-00-408-1386
NSN 5925-01-250-3925
NSN 6320-01-308-0009
NSN 6220-00-970-3797