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 5930-01-331-1540
NSN 6650-01-191-1669
NSN 6610-01-360-3564
NSN 5996-01-302-8251
NSN 5985-01-528-8001
NSN 5960-01-487-6436
NSN 5945-00-768-0120
NSN 5990-00-605-0391
NSN 5945-00-916-4035
NSN 5910-00-900-7319
NSN 5895-00-786-1162
NSN 6220-01-594-0991