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 6645-01-210-2223
NSN 6110-01-650-2793
NSN 6645-01-070-1210
NSN 5985-01-644-3789
NSN 6135-01-436-7733
NSN 5930-01-055-5525
NSN 2925-01-149-0352
NSN 6685-00-279-3620
NSN 5990-00-079-5406
NSN 6240-00-827-0889
NSN 2925-00-056-7112
NSN 5998-01-435-3426