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 6150-01-314-2631
NSN 5855-01-451-1163
NSN 5835-01-422-2399
NSN 5895-00-493-0042
NSN 5935-01-303-4746
NSN 6650-01-110-2142
NSN 6650-01-449-0702
NSN 6685-01-591-5114
NSN 5996-01-215-0944
NSN 5975-01-245-8641
NSN 5920-01-181-5248
NSN 6105-00-415-6534