what is a buna seal
Temperature rating is from -20Â°F to +300Â°F. Color is gray (black) or red and may be used on bleached paper. lines. Fluorocarbon (VITON) is not suitable for steam or hot water service. BUNA-N (HYCAR or Nitrile) - Buna-N is a general purpose polymer which has good resistance to oil, water, solvents and. hydraulic fluids. It also displays good compression, abrasion resistance, and tensile strength.