1.Material: Polypropylene 2.Sizes: 20mm x 1/2" to 32mm x 1" 3.Pressure Rating: 2.5MPa 4.Colors: light gray, white or other High temperature resistance: the maximum sustained working temperature is up to 70 degrees, the maximum transient temperature is up to 95 degreesHeat preservation: low thermal conductivity result in preserving heatNon-toxic: no heavy metal additives, would not be covered with ...