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 6685-00-405-2407
NSN 6145-01-220-2309
NSN 6145-01-422-4371
NSN 5935-00-353-0865
NSN 6105-01-440-8922
NSN 5998-00-468-8794
NSN 6620-00-220-2157
NSN 5895-01-462-2038
NSN 5999-00-999-4435
NSN 6620-01-227-4380
NSN 6685-00-720-3525
NSN 5920-01-432-6620