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  1. NMC_EXP

    DOT 5 & Seals

    I was hoping you would define "Hydroscopic" for me... I'm lost with that one From Merriam Webster Online: hydrophobic : lacking affinity for water hydrophilic: of, relating to, or having a strong affinity for water hygroscopic : readily taking up and retaining moisture hydroscopic ...
  2. NMC_EXP

    DOT 5 & Seals

    I stand corrected - hydrophylic means "water loving" - thanks. Hydrophobic means incapable of absorbing water. Hygroscopic means capable of absorbing water from the air. My excuses are: (1) Last chemistry class ~1976, and (2) boozeheimers. When it comes to the fact that silicone rubber...
  3. NMC_EXP

    DOT 5 & Seals

    As others have pointed out, DOT 5 fluid is hydrophobic, not hydrophylic. DOT 3 is a glycol fluid. DOT 5 is a silicone fluid. The types of rubber NOT recommended for use with silicone fluids are silicone rubber and fluorosilicone rubber. Like you were taught in high school chemistry...
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