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 5910-01-152-5775
NSN 5960-00-764-2109
NSN 5999-01-648-6347
NSN 5855-00-014-5008
NSN 5945-00-618-4761
NSN 5930-01-423-8439
NSN 6145-01-074-2200
NSN 5910-01-148-4856
NSN 5925-01-459-7882
NSN 5985-01-146-6637
NSN 5960-00-422-5376
NSN 6145-01-266-0854