1.Material: Polypropylene 2.Sizes: 16 to 160mm 3.Pressure Rating: 2.5MPa 4.Colors: light gray, white,green, or other color 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, not be covered with dirt, ...