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 6645-01-227-2036
NSN 6105-01-445-3655
NSN 6240-01-603-0143
NSN 6220-00-838-2231
NSN 5998-00-006-2241
NSN 5925-00-766-8538
NSN 6105-00-531-0563
NSN 5950-00-543-3447
NSN 5895-01-099-6258
NSN 6110-01-028-7980
NSN 5855-01-283-2870
NSN 4140-01-363-2258