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 6145-00-398-4405
NSN 5925-01-286-2116
NSN 6610-00-468-0913
NSN 5915-00-818-8688
NSN 6620-01-423-0833
NSN 5925-00-477-2703
NSN 5985-01-214-8406
NSN 5915-00-225-9506
NSN 5920-01-501-2294
NSN 5999-00-186-9314
NSN 6150-01-567-5977
NSN 6320-01-094-2634