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 6620-01-313-8164
NSN 5950-01-218-5639
NSN 5990-01-056-0893
NSN 5935-01-599-9958
NSN 6135-01-604-8739
NSN 6650-01-326-1010
NSN 6145-01-159-4545
NSN 5835-01-216-7289
NSN 5998-00-159-8634
NSN 5895-01-222-0110
NSN 2925-00-918-0859
NSN 6650-01-588-9061