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 5925-01-268-5183
NSN 5990-01-582-1977
NSN 6145-01-255-8700
NSN 5985-01-208-6571
NSN 6240-01-120-3533
NSN 5930-01-479-1386
NSN 5960-01-512-0233
NSN 5930-01-368-6736
NSN 5975-00-401-1840
NSN 5985-01-237-2570
NSN 5895-01-073-9689
NSN 5835-01-626-9603