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 5895-00-398-0029
NSN 5975-00-843-2585
NSN 5930-01-268-2275
NSN 6110-01-498-5120
NSN 5945-01-564-2721
NSN 5950-01-428-4020
NSN 5905-01-623-3375
NSN 5930-01-558-2218
NSN 4140-01-145-4474
NSN 5855-00-779-2854
NSN 5945-01-332-0428
NSN 5950-00-038-4303