Fluid Susceptibility

Fluid Compatibility testing is used to determine if a product is affected by various fluids.
Effects
The product's finish, labels, seal properties and operation can be damaged by contact with fluids utilized as solvents, lubricants, fuel or cleaning solutions.
Application
This test is typically performed on aircraft components and other products that come in contact with various fluids.
Test Method
Fluid Compatibility testing is generally performed by immersing or spraying a sample with the test fluids of interest, followed by a drying period at an elevated temperature. Frequently more than one test specimen is submitted for test. When multiple samples are tested it is the general practice to subject one sample to each fluid of interest.
Typical Test Fluids
The following table lists some of the typical fluids specified for use in this test. In cases where fluids are not be available in economic quantities, commercially available substitutes or equivalents are often used.

Class	Typical Test Fluid
Fuels	Aviation Jet Fuel Aviation Gasoline 100/130 Octane Kerosene Diesel Fuel
Hydraulic	Mineral Based Non Mineral Based Phosphate Ester Based Silicate Ester Based Synthetic Hydrocarbon Based Silicone Based Glycol Based
Lubricants	Petroleum Based Synthetic Oils Various Greases
Solvents and Cleaning	Isopropyl Alcohol Methanol Denatured Alcohol Brake Cleaner Mineral Spirits Paint Thinners
De-icing	Ethylene Glycol
Coolant	Propylene Glycol
Fire-Extinguisher	Monobromotriflouromethane Methyl Bromide Halon
Insecticides	DDVP (Dichlorvos) Pyrethrum Based
Disinfectants	Omnicide Cresolox Hycolin Sterilite
Other	Salt Water Cola Coffee

Typical Test Specifications
MIL-STD-202	MIL-STD-810	RTCA DO-160

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