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Petri-Seal stretches and conforms to form a tight seal and is temperature resistant, water – proof and chemically resistant. It resists abrasion and puncture and blocks vapor loss while reducing the rate of gas exchange. Petri-Seal can be used with microtiter plates, petri dishes and culture plates to prevent entry of any contaminants. Petri-Seal remains flexible down to -30°C and can withstand continuous exposure from -40°C (with intermittent exposure up to 100°C).