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Chemicals – H

O-Ring Fluid Compatibility Guide – H’s

(for reference only)

1 = Recommended  2 = Probably Satisfactory  3 = Marginal  4 = Not Recommended

Chemical/Media
Perfluoro-
elastomer
Viton®
ETP
Aflas®
TFE/P
Viton®
FKM
EPDM
P.C.
Buna-N
NBR
Silicone
Fluoro-
silicone
HALOTHANE
(Bromochlorotrifluoroethane)
2 1 1 1 4 4 4 2
HALOWAX
OIL
2 1 1 1 4 4 4 1
Heavy
Water
1 1 1 2 1 1 1 1
HEF-2
(Trialkyl Pentaborane)
1 1 1 1 4 2 4 2
Helium 1 1 1 1 1 1 1 1
Heptachlor 1
Heptanal 1
Heptanoic
Acid
1
Hexachloroacetone 1 4 4 4 1 4
Hexachlorobutadiene 1
Hexachloroethane 1
Hexaethyl
Tetraphosphate (HETP)
1
Hexafluoroethane
(FC 116)
2 2 2 1 1
Hexamethyldisilizane
(HMDS)
1
Hexamethylenediamine 2
Hexamethylenetetramine 2
Hexyl
Acetate
1
Hexyl
Alcohol
1 1 1 3 1 2 2
Hexylene
Glycol
1
Hexylresorcinol 1
High
Viscosity Lubricant H2
1 1 1 1 1 1 1 2
High
Viscosity Lubricant U4
1 1 1 1 1 1 1 2
Hydraulic
Oils (Petroleum, Aircraft)
1 1 1 1 4 1 2 1
Hydraulic
Oils (Synthetic Base)
1
Hydrazine 2 4 1 4 1 2 3 4
Hydrazine
Dihydrochloride
1
Hydrazine
Hydrate
1
Hydriodic
Acid
1
Hydrobromic
Acid
1 1 1 1 1 4 4 3
Hydrochloric
Acid (37%) (Hot)
1 1 1 1 3 4 3 2
Hydrochloric
Acid, Conc.
1 1 1 2 2 4 3
Hydrocyanic
Acid
1 1 1 1 1 2 3 2
Hydrofluoric
Acid (49%)
1 1 1 4 4 4 4
Hydrofluoric
Acid, Anhydrous
1 1 1 3 4 4 4
Hydrofluoric
Acid, Conc. (Hot)
1 3 3 4 4 4 4
Hydrofluosilicic
Acid
1 1 1 1 1 2 4 4
Hydrogen 1 1 1 1 1 3 3
Hydrogen
Bromide, Anhydrous
1
Hydrogen
Chloride, Anhydrous
1 1 1 1 1 4
Hydrogen
Fluoride, Anhydrous
2 4 4 2 4
Hydrogen
Iodide, Anhydrous
1
Hydrogen
Peroxide (36%)
1 1 1 1 1 2 2 2
Hydrogen
Selenide
1
Hydrogen
Sulfide
1 4 1 4 1 1 3 3
HYDROLUBE 1 1 1 1 1 1 2 2
Hydroquinone 2 3 3 2 4 3 2 2
Hydroxyacetic
Acid
1
Hydroxycitronellal 1
Hydroxyethylenediamine 1
Hydyne 2 4 4 1 2 4 4
HYJET 1 4 2 4 1 4 4 4
Hypochlorous
Acid
1 1 1 2 4