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 6620-01-296-0873
NSN 4140-01-634-0330
NSN 5835-00-247-0161
NSN 5920-01-469-3058
NSN 4140-00-085-1355
NSN 5950-00-449-4487
NSN 5905-01-499-8727
NSN 5996-01-657-4273
NSN 6110-01-579-8397
NSN 5996-01-455-2198
NSN 5935-00-086-2406
NSN 6620-01-363-0499