| Both materials are well suited for use in the -23 to 66°C range. Fluorosilicone
has an advantage in lower temperatures and Fluorosilicone has an advantage in higher
temperatures. Marco offers specific compound formulations extending these ranges even futher as can
be seen in the following compound comparison chart. When comparing these materials with respect to electrical current resistance, Fluorosilicone has a slight advantage.
The differences in compression set resistence show that Fluorosilicone has a slight advantage.
Additionally, Fluorosilicone has a slight advantage when considering wear resistance.
Also, Fluorosilicone has a significant advantage when comparing heat stability.
Furthermore, Polyurethane has a significant advantage when comparing short term resilience.
Finally, Polyurethane has a significant advantage when evaluating differences in permeation resilience. Both materials are resistant to ozone, common fuels, chlorinated hydrocarbons, aging, weathering and sunlight, silicone oils and some petroleum oils, with Fluorosilicone having specific resistences to compression set, vegetable oils, aromatic hydrocarbons, oxidizing chemicals, animal oils, chlorinated solvents, diluted alkalies, diester oils, aliphatic fluorocarbons, aromatic fluorocarbons, toluene, benzene, jet fuels, phosphate esters, dry heat, wide temperature range, ammonia and some acids. Polyurethane has specific resistence to mineral oils, greases, aliphatic hydrocarbons, hydraulic fluids, water, oxygen, tear, brake fluids, silicone greases and some hydrocarbon fuels. |