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 6620-01-529-6665
NSN 5855-00-114-4954
NSN 5895-01-398-2289
NSN 5915-01-206-5056
NSN 6220-01-452-0007
NSN 5975-01-343-9932
NSN 5910-01-437-8914
NSN 2925-01-371-6853
NSN 6320-01-056-1164
NSN 5935-00-003-6632
NSN 6110-00-244-1354
NSN 6110-01-004-8956