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Chemical Compatibility Guide

Reference guide for Diaphragm Pumps and Piston Pumps

ARO is pleased to present this selection guide to provide a convenient and informative reference point for pump selection. This information was compiled from information provided by material suppliers and manufacturers.


Chemical Compatibility Chart

A = Excellent, B = Good, C = Fair to Poor, D = Not recommended
X or Brackets around a rating letter indicate that no data is available, but the ratings are made on the basis of exposure test in similar chemical groups.



DOWNLOAD THE COMPATIBILITY GUIDE - FAHRENHEIT



DOWNLOAD THE COMPATIBILITY GUIDE - CELSIUS


Material

MATERIAL
NITRILE
SANTOPRENE®
PTFE
HYTREL®
NEOPRENE®
URETHANE
EPR/EPDM
VITON®
UHMW-PE
LEATHER
POLYPROPYLENE
ACETAL
PVDF
ALUMINUM
CAST IRON
STAINLESS
HASTELLOY®
0 - Chloronaphthalene
D
D
A
D
D
D
D
A
C
X
D
X
A
D
B
B
B
0 - Chlorphenol
C
C
A
X
D
D
D
B
X
X
X
B
A
C
C
A
A
1 - Chlorol 1 Nitro Ethane
D
C
A
D
D
D
D
D
X
X
D
X
X
D
X
X
X
1010, Phosphate Ester
D
A
A
B
D
A
A
A
X
X
X
X
X
X
X
X
X
1055, Phosphate Ester
D
A
A
B
D
A
A
A
X
X
X
X
X
X
X
X
X
1120, Phosphate
D
A
A
B
D
A
A
A
X
X
X
X
X
X
X
X
X
5040 (Water/Oil Emulsion)
A
D
A
B
B
D
D
A
X
X
X
X
X
X
X
X
X
620 Water/Glycol
B
A
A
A
B
B
A
B
X
X
X
X
X
X
X
X
X
Acetaldehyde (Ethanol)
D
B
A
B
D
D
A
D
B
B
C
A
D
B
A
A
A
Acetamide(Ethanamide)
A
A
A
D
B
D
A
A
A
X
A/70
A
A/75
A
A
A
A
Acetate Solvents
D
B
A
D
D
D
A
D
B
X
B
A/70
A/70
A
D
A
A
Acetic Acid
C
B
A
D
C
C
A
C
B
D
B
D
A
B
D
A
A
Acetic Anhydride
D
A
A
C(B)
B
D
B
D
D
B
C
D
D
B
D
A
A
Acetone
D
B
A
C
D
D
A
D
A
X
D
B
D
A
A
A
A
Acetonitrile (Methyl Cyanide)
D
A/70
A
X
D
B
A
D
X
X
B/70
X
A/120
A
A
A
B
Acetophenone (Acetyl Benzene)
D
B
A
X
D
X
B
D
X
X
B/70
X
A/70
B
A
A
B
Acetyl Acetone
D
X
A
X
D
D
A
D
X
X
X
X
X
D
A
A
X
Acetyl Chloride
D
B/70
A
D
D
D
D
B
D
X
D
X
A/120
D
A
B
A
Acetyl Sallicylic Acid (Aspirin)
X
C
A
X
B
X
B
A
A
X
X
X
X
D
B
B
X
Acetylene
A
X
A
A
B
D
A
A
X
A
D
A
A
A
A
A
A
Acrolein (Acryaldethyde)
X
A
A
D
D
D
A
B
X
X
X
X
X
B
B
B
X
Acrylonitrile (Vinyl Cyanide)
D
D
A
D
D
D
D
C
X
X
B
X
A/70
A
A
A
A
Adipic Acid
B
B
A
D
A/140
X
A
A
A
X
A
A/70
A
B
B
B
A
Aero Lubriplate
A
C
A
D
A
X
D
A
X
X
A
A
A
A
A
A
A
Aerosafe 2300
D
B
A
A
D
A
A
D
X
X
X
A
X
A
A
A
X
Aerosafe 2300W
D
B
A
A
D
D
A
D
X
X
X
A
X
A
A
A
X
Aeroshell17 Grease
A
D
A
D
B
A
D
A
X
X
X
A
X
A
A
A
X
Aeroshell1AC
A
D
A
D
B
B
D
A
X
X
A
A
B
A
A
A
A
Aeroshell750
C
D
A
D
D
A
D
A
X
X
X
A
X
A
A
A
A
Aeroshell7A Grease
A
D
A
D
B
D
D
A
X
X
X
A
X
A
A
A
X
Alcoh. Isobutyl (2-Methyl-1-Propanol)
C
A
A
B
A
D
B
A
X
X
A/70
A
A
B
C
A
A
Alcohol Amyl (1-Pentanol)
B
A
A
A
B
D
A
B
A
X
A
A
A
B/70
B
A
A
Alcohol Benzyl (Phenol Carbinol)
D
A
A
D
B
C
C
A
A
X
A/70
A/70
A
B/70
A
A
A
Alcohol Butyl (Butanol)
B
A
A
D
A
D
A
A
A
X
B
A
A
B
B
A
A
Alcohol Diacetone (Tyranton)
D
C
A
D
D
D
B
D
X
X
B
A
A/70
B
B
A
A
Alcohol Ethyl (Ethanol)
A
B
A
A
A
D
A
A
A
X
A
A
A
B/200
A
A
A
Alcohol Hexyl (1-Hexanol)
A
B
A
D
B
D
B
A
X
X
A/70
A
A
A
A
A
A
Alcohol Isopropyl (2-Propanol)
C
B
A
A
B
D
B
A
X
X
A
A
A/150
B
C
A
A
Alcohol Methyl (Methanol)
A
A
A
A
A
D
B
D
A
X
A/120
A
A
B
A
A
A
Alcohol Octyl (Caprylic Alcohol)
X
B
A
D
B
D
A
A
X
X
X
A
X
A
A
A
A
Alcohol Propyl (Propanol)
A
A
A
D
A
D
B
A
C
X
A
A
A/120
A
A
A
A
Alkazene
D
D
A
D
D
D
X
A
B
X
X
X
X
X
X
X
X
Allyl Alcohol
A
A
A
D
A
B
A
B
A
X
A
X
A
B
A
A
A
Allyl Bromide
D
X
A
D
D
A
D
B
X
X
X
X
X
D
A
X
X
Allyl Chloride
C
X
A
D
D
D
D
B
B
X
A
X
A
D
C
B
X
Almond Oil (Artificial)
D
C
A
D
D
D
B/70
D
X
X
D
X
X
X
X
X
X
Alum (Alum Potasium Sulfate)
A
A
A
D
A
D
A
A
A
X
A
A
A
C
D
B
B
Alum. Potassium Sulfate (Alum)
A
A
A
D
A
D
A
A
A
X
A
A
A
C
D
B
B
Aluminum Acetate
X
A
A
X
B
D
A
D
A
X
A
A
X
A
D
B
B
Aluminum Ammonium Sulfate
A
B
A
X
A/170
X
A
A
X
X
A
X
A
X
X
X
X
Aluminum Bromide
B
B
A
D
A
D
A
A
X
X
X
X
A
X
X
X
X
Aluminum Chloride
A
A
A
B
A
B
A
A
A
X
A
B
A
B
D
C
A
Aluminum Fluoride
B
A
A
X
A
C/70
B
A
A
X
A
D
A
B
D
A
B
Aluminum Hydroxide
A
A
A
D
A
B
A
A
A
X
A
A
A
A
D
A
B
Aluminum Nitrate
A
A
A
X
A/70
C
A
A
A
X
A
B
A
B
D
A
B
Aluminum Phosphate
A
A
A
X
A
D
A
A
X
X
A
A
A
X
X
A
X
Aluminum Sulfate (Sulphate)
A
A
A
(B)
A
B
A
A
A
A
A
B/70
A
A
D
A
A
Amines
D
A
A
D
D
D
C
D
A
D
B/120
C/70
X
A
D
A
B
AmmoniaLiquids
B
A
A
X
A
B
A
D
D
X
A/70
D
A
D
A
A
B
AmmoniaNitrate
A
A
A
X
C
B
A
D
X
X
A
B/70
A
C
A
A
B
Ammonium Acetate
A
A
A
D
A
D
A
A
A
X
A
C
X
B
A
X
X
Ammonium Bicarbonate
B
A
A
X
A
C
B
D
A
X
X
X
X
X
X
X
X
Ammonium Bifluoride
A
A
A
X
A
D
A
A
X
X
A
X
A
X
D
X
X
Ammonium Carbonate
C
A
A
X
A
A
A
A
A
A
A
D
A
B
B
B
B
Ammonium Casenite
X
A
A
X
A
X
X
X
X
X
X
A
X
X
X
A
X
Ammonium Chloride 1%
A
A
A
A/70
A
B/70
A
A
A
X
A
A
A
C
D
C
A
Ammonium Dichromate
B
A
A
X
A
X
A
X
X
X
X
X
X
A
A
X
X
Ammonium Diphosphate
X
A
A
D
A
X
A
A
X
X
X
X
X
X
X
X
X
Ammonium Floride
B
B
A
X
B
X
A
A
A
X
A
X
A
D
D
D
A
Ammonium Hydroxide
B
A
A
(B)
A
D
A
B
A
B
A
B
A
B
B
B
A
Ammonium Nitrate
A
A
A
X
A
A
A
A
A
X
A
B
A
B
A
A
A
Ammonium Nitrite
A
A
A
X
A
D
A
A
A
A
A/70
X
A
X
X
A
X
Ammonium Oxalate- 5% Sol.
B
A
A
X
A
X
A
X
A
X
X
B
X
X
D
A
A
Ammonium Persulfate Sol.
D
A
A
X
A
D
B
A
A
X
A
X
A
C
D
A
A
Ammonium Phosphate
A
A
A
B
A
B
A
A
B
X
A
B
A
B
D
A
A
Ammonium Sulfamate
A
A
A
B
A
A
A
A
X
X
X
X
X
X
X
X
X
Ammonium Sulfate
A
A
A
B
A
A
A
A
A
X
A
A
A
B
C
A
B
Ammonium Sulfide
X
X
A
X
A
B
A
D
A
X
X
X
X
X
X
X
X
Ammonium Sulfite
A
A
A
X
A
D
A
A
D
X
A
D
X
C
D
B
A
Ammonium Sulphate 1% - 5%
A
X
A
C
A
B
X
D
A
X
A
A
A
B
C
A
B
Ammonium Thiocyanate
X
X
A
X
A
X
A
A
A
X
X
X
A
C
C
A
A
Ammonium Thiophosphate
A
A
A
D
A
X
A
A
X
X
X
X
X
X
X
X
X
Ammonium Thiosulfate
A
A
A
X
A
X
A
A
X
X
X
B
X
A
D
A
X
Amyl Acetate (banana oil)
D
D
A
C
D
D
A
D
B
B
B
D
A/120
B
X
A
B
Amyl Alcohol
B
A
A
A
A
D
A
A
A
X
B
A
A
B
C
A
B
Amyl Borate
X
B
A
X
A
D
D
A
X
X
X
X
X
X
X
X
X
Amyl Chloranaphthalene
C
C
A
X
D
D
D
A
X
X
X
X
X
X
X
X
X
Amyl Chloride (Chloropentane)
D
C
A
D
D
C
D
A
D
X
D
A
A
D
A
A
B
Amyl Naphthalene
D
C
A
D
D
D
D
A
X
X
X
X
X
X
X
X
X
Amyl Phenol
X
C
A
X
X
X
X
A
X
X
X
X
X
A
A
A
A
AN-0-3 Grade M
B
B
A
D
D
B
B
A
X
X
X
X
X
X
X
X
X
AN-0-366
B
X
A
D
D
D
C
A
X
X
X
X
X
X
X
X
X
AN-0-6
B
X
A
D
A
D
A
A
X
X
X
X
X
X
X
X
X
AN-VV-0-366b Hydr. Fluid
D
D
A
D
C
D
D
A
X
X
X
X
X
X
X
X
X
ANG-25 (Di-Ester Base) (TG7449)
D
D
A
X
D
D
D
A
X
X
X
X
X
X
X
X
X
ANG-25 (Glyceral Ester)
D
X
A
X
B
D
A
A
X
X
X
X
X
X
X
X
X
Anhydrous Ammonia
B
A
A
D
D
D
A
D
X
X
A/70
D
D
B
D
A
A
Anhydrous Hydrazine
D
X
A
X
B
D
B
D
X
X
X
X
X
X
X
X
X
Anhydrous Hydrogen Fluoride
D
C
A
X
X
D
A
D
X
X
X
X
X
X
X
X
X
Aniline
D
A
A
C
D
D
D
D
C
X
A
A/70
A/70
C
C
A
B
Aniline Dyes
D
B
A
D
B
D
A
A
C
X
X
D
X
B
A
B
X
Aniline Hydrochloride
D
A
A
X
D
D
B
B
C
X
D
X
A/100
D
D
D
X
Aniline Oil
D
C
A
D
D
D
B
C
X
X
X
X
X
B
A
A
B
Aniline Sulfite
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
C
X
Animal Gelatin
B
B
A
X
A
A
A
A
X
X
X
X
X
X
X
A
X
Animal Oil (Lard Oil)
B
B
A
B
A
C
A
A
A
X
A
A
A
A
A
A
A
Ansul Ether 161 or 181
D
D
A
D
X
B
C
D
X
X
X
X
X
X
X
X
X
Anthaquinone
D
D
A
D
D
B
C
D
X
X
X
X
X
B
B
B
A
Anti-Freeze (Ethylene Glycol)
A
A
A
A/70
A
B
A
A
A
X
A
B
A
B
B
A
A
AntimonyChloride
B
A
A
D
D
X
A
B
A
X
A
X
A
B
A
A
A
AntimonyTrichloride
X
A
A
D
C
D
B
A
A
X
A
X
A
B
A
A
B
Aqua Regia(20% Nitric, 80% HCL)
D
D
A
D
D
D
B/140
A/70
B
X
B/70
D
A/70
D
D
D
C
Argon
A
A
A
A
D
A
A
A
X
X
X
X
X
X
X
X
X
Aroclor
D
D
A
C
D
B/70
B
A
X
X
D
X
X
A
B
A
A
Aromatic Fuel 50%
X
C
A
X
D
D
D
A
X
X
X
X
X
X
X
X
X
Aromatic Hydrocarbons
D
C
A
C/70
D
D
D
A
X
X
D
A
X
A
A
A
X
Arsenic Acid
A
A
A
D
B
C
A
A
X
B
A
D
A
D
D
A
B
Arsenic Trichloride
B
B
A
D
A
X
D
A
A
X
X
D
X
D
D
D
B
Ascorbic Acid
X
X
A
X
A
X
X
X
X
X
X
X
X
A
D
A
X
Askarel
C
D
A
D
D
D
D
A
X
X
X
X
X
X
X
A
X
Asphalt
B
B
A
(B)
C
B
D
A
X
A
A
B
A
A
B
A
X
Asphalt Emuision
B
B
A
B
B
B
D
A
A
X
X
X
A
B
A
A
A
Asphalt Topping
B
B
A
B
B
B
D
A
A
X
D
D
D
A
A
A
A
ASTM Oil,NO. 1
C
C
A
A
B
B
D
A
A
X
X
A
X
A
A
A
A
ASTM Reference Fuel A
B
B
A
A
B
D
D
A
X
X
X
X
X
A
A
A
A
Atlantic Dominion F
X
C
A
D
B
D
D
A
X
X
X
X
X
X
X
X
X
Aurex 903R (Mobile)
X
X
A
D
B
A
D
A
X
X
X
X
X
X
X
X
X
Automatic Transmission Fluid
X
D
A
A
B
B
D
A
X
X
X
A
X
A
A
A
A
Aviation Gasoline, Mil.
B
X
A
D
C
D
D
A
X
X
X
X
X
A
A
A
A
B
B
C
A
A
D
D
D
A
X
X
X
X
X
A
A
A
A
Bardol B
D
D
A
D
X
X
D
A
X
X
X
X
X
X
X
X
X
Barium Carbonate
A
A
A
X
A
B
A
A
B
A
A
A
A
D
A
A
A
Barium Chloride
A
A
A
X
A
A
A
A
B
X
A
A
A
D
D
B
A
Barium Cyanide
D
A
A
X
A
X
A
A
X
X
D
B
X
C
B
A
X
Barium Hydroxide (Barium Hydrate)
A
A
A
(B)
A
A
A
A
A
B
A
D
A
D
B
A
B
Barium Nitrate
A
A
A
X
A
B
A
A
B
X
A
B
A
B
A
A
A
Barium Sulfate
A
A
A
D
A
A
A
A
A
A
A
B
A
D
B
A
A
Barium Sulfide
A
A
A
X
A
A
A
A
B
A
A
A
A
D
D
B
A
Bayol 35
D
D
A
X
A
X
D
A
X
X
X
X
X
X
X
X
X
Bayol D
D
D
A
X
A
X
D
A
X
X
X
X
X
X
X
X
X
Beef Extract
A
A
A
X
A
X
X
A
X
X
X
X
X
X
D
A
X
Benzaldehyde
D
D
A
B
D
D
A
D
C
X
D
A
A/70
A
A
A
A
Benzene (Benzol)
C
C
A
B
D
D
D
B
D
B
B
A
A
B
B
B
A
Benzene Sulfonic Acid
D
A
A
X
B
D
D
B
D
X
B/70
C
A
D
D
B
B
Benzoic Acid
D
A
A
D
D
D
B
A
A
A
A
B
A
B
D
B
B
Benzol (Benzene)
D
C
A
B
D
D
D
B
D
X
D
A
A/70
B
B
A
A
Benzyl Acetate
X
X
A
D
X
X
X
D
C
X
X
X
X
A
A
A
B
Benzyl Alcohol
D
D
A
C
C
D
C
A
A
X
A
X
A
A
A
A
B
Benzyl Benzoate
X
C
A
D
D
D
B
A
X
X
X
X
X
A
B
B
B
Benzyl Chloride (Chlorotoluene)
D
C
A
D
D
D
D
A
A
X
D
A
A
D
D
B
A
Bichlorideof Mercury
B
B
A
X
A
A/70
A
A
X
X
X
X
X
X
X
X
X
Biphenyl (Diphenyl)
D
D
A
X
D
D
D
A
X
X
X
X
X
A
A
X
X
Bismuth Subcarbonate
X
D
A
D
D
D
A
X
A
X
X
X
X
X
X
X
X
Black Point 77
X
X
A
X
C
C/70
A
A
X
X
X
X
X
X
X
B
X
Black Sulphate Liquor
X
X
A
B
B
D
B
B
A
X
X
X
A/175
C
B
A
B
Blast Furnace Gas
X
A
A
B
D
D
D
A
A
X
X
D
X
X
X
X
X
Bleach Solutions (Water, Chlorine)
D
B
A
C
D
D
A
B
B
X
B
D
A
D
D
B
B
Blood (Meat Juices - Cold)
D
B
A
D
A
D
A
C
X
X
A
X
X
A
D
A
X
Borax (Sodium Borate)
A
A
A
A
A
A
A
A
A
A
A
A
A
C
A
A
A
Bordeaux Mixtures
B
A
A
B
A
D
A
A
A
X
X
X
X
D
C
A
A
Boric Acid
A
A
A
A/70
A
A/70
A
A
A
A
A
C
A
B
D
A
A
Boron Fuels (HEF)
C
D
A
D
D
A
D
A
X
X
X
X
X
X
X
X
X
Brake Fluid (Non-Petroleum)
D
A
A
D
B
A
A
D
A
X
D
X
X
A
A
A
A
Brewery Slop
X
A
A
D
A
A
A
A
X
X
X
X
X
X
A
A
X
Brine (Sodium Chloride)
A
A
A
B
B
B
A
A
A
X
A/70
A
A
C
D
A
A
Bromine
D
C
A
D
D
D
C
A
D
X
B/72
D
A/150
D
D
D
A
Bromine Trifluroride
D
C
A
D
D
D
D
D
X
X
D
D
X
D
D
B
X
Bromine Water
D
B
A
D
D
D
D
B
X
X
D
D
A
D
D
B
X
Bromine-Anhydrous
D
C
A
D
D
D
D
A
D
X
D
D
A/150
D
D
D
A
Bromine-Pentafluroride
D
D
A
X
D
D
D
D
X
X
X
X
X
X
X
X
X
Bromobenzene
D
D
A
D
D
D
D
B
D
X
D
D
A
D
B
B
B

The chemical compatibility listings are intended as a guide only. We assume no liability for the accuracy of their use. The user should test under their own operating conditions to determine the suitability of any compound and material in a particular application.

Thermoplastic Elastomers (TPEs) vs Thermosetting Rubber Diaphragms

Traditional thermoset includes Buna-N (TS), EPR, Neoprene®, Viton®

Thermoplastic Compounds (TPE)

Thermoset (TS)

Polytetrafluoroethylene (PTFE)

Halogenated Solvents Explosion Hazard

Wet End Material Compatibility Guide

Non-Metallics

en-NO