A versatile, moisture-resistant, thermoplastic flexible plastic for a wide variety of clinical and industrial applications. Has been used with confidence for years in scientific research and medical settings. It is a proven fast, economical covering or stopper for test tubes, beakers, vials, petri dishes, flasks and various instruments and objects with irregular surfaces. In laboratories, its sheet is a thermoplastic, self-sealing film that minimizes moisture loss and offers excellent barrier protection to the contents of tubes, flasks, culture tubes, etc. It makes a superior bandage cover in drainage cases and is useful in all stocking areas in hospitals. It is an ideal shelf or tray liner to prevent slipping of bottles or instruments. It is odorless and semi-transparent.