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 6240-00-299-9819
NSN 5905-01-487-5744
NSN 6135-01-292-1071
NSN 5960-01-353-0773
NSN 6685-00-881-3767
NSN 5905-01-471-8380
NSN 5985-01-259-9849
NSN 6150-01-243-2538
NSN 6650-01-627-5855
NSN 5999-00-530-4844
NSN 6645-00-348-2841
NSN 6650-00-197-7563