Parafilm Laboratory Sealing Wax
Parafilm« is ideal for the scientific laboratory because it is a thermoplastic, self-sealing film. It holds moisture loss to a minimum. It offers excellent protection for the contents of tubes, flasks, and petri dishes. The unique properties of the film enable it to cling around even irregular shapes and convoluted surfaces. Parafilm« M can be stretched 3-4 times its original length before breaking.
2" (5.1 cm) x 250 ft (76.2 meters)