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 6240-01-421-4025
NSN 5855-00-327-2112
NSN 5910-01-561-7025
NSN 5990-00-990-7030
NSN 5990-01-056-6413
NSN 5915-01-100-3652
NSN 6320-00-456-0836
NSN 5990-01-294-6198
NSN 5930-01-439-8382
NSN 6110-01-417-1811
NSN 6135-00-500-2082
NSN 6110-00-015-7688