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 5996-01-590-1556
NSN 5835-01-065-5281
NSN 6620-01-268-6390
NSN 5950-01-194-4267
NSN 5905-01-547-4660
NSN 6110-00-890-3042
NSN 6320-00-593-0379
NSN 5998-00-606-7447
NSN 6620-01-112-6440
NSN 5999-01-025-4518
NSN 6645-01-229-2497
NSN 6240-01-102-1555