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 5935-01-416-0781
NSN 5920-01-534-3806
NSN 5930-01-605-1515
NSN 7035-00-235-3529
NSN 6220-01-171-6976
NSN 5990-01-056-6413
NSN 5990-00-391-6207
NSN 5998-00-064-5583
NSN 6240-01-514-4184
NSN 6135-01-159-3032
NSN 5975-00-009-8718
NSN 6620-01-611-7907