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 5950-00-139-2942
NSN 6220-01-512-8290
NSN 6150-01-036-4052
NSN 5996-01-370-9886
NSN 5895-01-383-7587
NSN 6610-01-591-4374
NSN 6685-00-221-0197
NSN 6110-00-349-3964
NSN 6620-01-102-0008
NSN 5920-01-296-3486
NSN 4140-01-228-9602
NSN 6620-00-193-9503