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 6135-01-142-2417
NSN 6645-01-598-8118
NSN 5960-01-011-2698
NSN 6645-00-974-6303
NSN 5920-01-358-6930
NSN 5930-01-634-0659
NSN 6145-01-386-3718
NSN 6650-01-364-8504
NSN 6150-00-080-8274
NSN 5998-00-567-9461
NSN 5920-00-246-5992
NSN 6145-00-784-3741