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 5950-01-594-3131
NSN 6645-01-545-6853
NSN 5960-00-140-9583
NSN 6620-01-452-8418
NSN 5950-00-243-3856
NSN 6685-01-264-8769
NSN 6105-00-717-8998
NSN 5895-01-435-0590
NSN 6240-01-240-1596
NSN 5945-01-271-7456
NSN 6145-00-216-6613
NSN 5935-00-081-8002