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 6240-00-156-1607
NSN 6620-01-407-1158
NSN 5975-01-612-9664
NSN 6240-01-306-4320
NSN 6610-00-100-1195
NSN 5895-01-362-1927
NSN 6150-01-605-8170
NSN 5905-00-293-1522
NSN 5930-00-785-6558
NSN 6145-01-212-7990
NSN 7035-01-547-2579
NSN 5965-01-641-4354