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 6610-01-420-1739
NSN 6110-01-649-6493
NSN 6645-01-605-1485
NSN 6620-01-281-6386
NSN 5960-01-641-5493
NSN 6110-00-553-8816
NSN 5999-00-277-4257
NSN 5910-01-646-1249
NSN 6320-01-141-3791
NSN 6220-00-635-1317
NSN 6320-01-176-8367
NSN 5996-01-198-4583