1654 Guardian Plus is a CO2 and H2S resistant lubricant and sealant for valves. It provides superb lubrication and sealing to valves exposed to CO2, H2S, and other harsh environments. It is insoluble in water, oilfield brine, and hydrochloric acid. 1654 is non-separating, will not absorb moisture, and has excellent leak-resistance. 1654 services temperatures from -15°F to >550°F (-26°C to >288°C).