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 5835-01-631-7390
NSN 5835-01-257-0154
NSN 5905-01-487-4793
NSN 5960-01-323-6432
NSN 6645-01-204-5629
NSN 6220-01-368-9107
NSN 5950-01-306-7931
NSN 5950-01-461-2818
NSN 4140-01-447-3141
NSN 6105-00-168-3916
NSN 5935-01-165-3039
NSN 6110-01-633-9660