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 6145-00-689-9339
NSN 5996-00-832-9495
NSN 6145-01-426-6657
NSN 5930-01-057-7869
NSN 5835-01-544-5183
NSN 5998-00-905-1482
NSN 6240-01-067-6457
NSN 6110-00-539-9543
NSN 5998-01-263-8033
NSN 5990-01-633-9503
NSN 5996-00-577-0483
NSN 6110-00-435-1092