so i have been looking for low pressure brake hose for my remote reservoir. struck out at napa (they tried to get me to buy fuel hose), and the vw places want $5 a foot. so i was just going to order it from mcmaster. well today my wife sent me to get some chicken food from tractor supply, and wile wandering through the isles i decided to see what they had. well they just happened to have epdm in about every size from 1/4" to 1". so i got 10' of 3/8" for $10, with is a lot cheaper than the $40 it would of cost at bugformance or mcmaster. so, if anybody is doing a rem. res. for a clutch or brake master just look in the pump sprayer section at tractor supply.
I know of many cases where fuel hose has been used with brake fluid. Unless things have changed, flow pressure fuel hose(for carbureted engines) is neoprene. Neoprene is not adversely effected by DOT 3 and DOT 4 brake fluid.
Neoprene was the first synthetic rubber developed commercially and exhibits generally good ozone, aging and chemical resistance. It has good mechanical properties over a wide temperature range. Heat resistance Up to approximately 250°F (121°C). Cold flexibility Down to approximately 40°F (40°C). Chemical resistance Paraffin base mineral oil with low DPI, e.g. ASTM oil No. 1 Silicone oil and grease Water and water solvents at low temperatures Refrigerants Ammonia Carbon dioxide Improved ozone, weathering and aging resistance compared with nitrile rubber. Limited compatibility Naphthalene based mineral oil (IRM 902 and IRM 903 oils) Low molecular aliphatic hydrocarbons (propane, butane, fuel) Glycol based brake fluids. Not compatible with: Aromatic hydrocarbons (benzene) Chlorinated hydrocarbons (trichloroethylene) Polar solvents (ketones, esters, ethers, acetones).
EPDM (Ethylene Propylene, EPM) EPM is a copolymer of ethylene and propylene. Ethylenepropylene-diene rubber (EPDM) is produced using a third monomer and is particularly useful when sealing phosphate-ester hydraulic fluids and in brake systems that use fluids having a glycol base. Heat resistance Up to 300°F (149°C) (max. 400°F (204°C) in water and/or steam). Cold flexibility Down to approximately 70°F (57°C). Chemical resistance Hot water and steam up to 300°F (149°C) with special compounds up to 400°F (204°C) Glycol based brake fluids up to 300°F (149°C) Many organic and inorganic acids Cleaning agents, soda and pot***ium alkalis Phosphate-ester based hydraulic fluids (HFD-R) Silicone oil and grease Many polar solvents (alcohols, ketones, esters) Ozone, aging and weather resistant. Not compatible with: Mineral oil products (oils, greases and fuels).
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