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 5930-01-560-8251
NSN 5950-01-530-2788
NSN 5895-01-051-3616
NSN 6610-01-384-1587
NSN 5935-01-599-8635
NSN 4140-00-935-5360
NSN 4140-01-052-5221
NSN 6620-00-838-6954
NSN 6240-00-853-8675
NSN 5905-01-323-6486
NSN 5950-01-512-1465
NSN 5910-01-647-8634