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 6620-01-203-7761
NSN 5855-01-430-5459
NSN 5905-01-524-7203
NSN 5998-00-046-5568
NSN 6110-01-559-9252
NSN 5925-01-416-8176
NSN 5975-01-003-9803
NSN 5915-01-338-6431
NSN 5905-00-363-3590
NSN 5835-00-233-6327
NSN 5915-01-236-3610
NSN 6620-01-223-5998