Constructed of heavy duty 4 mil black carbon impregnated Low Density Polyethylene (LDPE) film to create an extra strong static barrier. Meets specifications of MIL-P-82646, Rev. B. Protects against electrostatic charge, chemicals, abrasion and humidity if heat-sealed. Neatly wound on a 3" core with 1" diameter core plug. Manufactured to exact specification to ensure even wall thickness. Can be heat sealed, tied, stapled or taped shut. See our Tubing Dispensers and Thermal Sealers for making your own custom static-control bags.