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 5999-01-542-1699
NSN 5990-01-244-9998
NSN 5990-00-843-6825
NSN 5945-01-455-2140
NSN 5998-01-248-9583
NSN 5915-01-570-3148
NSN 5910-00-079-1309
NSN 5996-01-591-8165
NSN 5835-00-480-5671
NSN 5960-01-337-8951
NSN 5930-00-884-0762
NSN 5960-01-522-0391