Parafilm M PM992 uk 2"x250ft

General Description Flexible sealing film comprising a proprietary blend of waxes and polyolefins on a paper release liner Features Parafilm M is highly insensitive to water, moisture loss and moisture absorption, yet is permeable to oxygen and carbon dioxide. Parafilm M stretches more than 350% of its original length and is selfsealing, allowing it to cling around irregular shapes and surfaces. These unique properties make it ideal for protecting the contents of test tubes, flasks, beakers, and Petri dishes as well as an overwrap to further secure stoppers, lids and caps. Thickness 127 µm ASTM D645 Density 0.922 g/cm3 Amcor Internal Elongation at Break >350 % ASTM D882 Water Vapor Transmission Rate 1 g/(m2 · d) @ 38 °C; 90% RH ASTM F1249 Oxygen Transmission Rate 300 cm3/(m2 · d) @ 23 °C; 0% RH ASTM D3985 Carbon Dioxide Transmission Rate 1200 cm3/(m2 · d) @ 23 °C; 0% RH ASTM F2476 Softening Point 54 °C Amcor Internal Melting Point 100 °C Amcor Internal