Base Polymer Selection Guide
		Resistance to Aqueous Fluids
		Water	Acid	Bases / Alkalis	Alcohol	Esters	Glycols
Polymer types
General Purpose
Natural Rubber	NR	E	F to G	G	G to E	P to G	VG
Polyisoprene	IR	E	F to G	F to G	G to E	P to G	VG
Styrene Butadiene Rubber	SBR	G to E	F to G	F to G	G to E	P to G	VG
Polybutadiene Rubber	BR	E	F to G	F to G	F to G	P to F	VG
Ethylene Propylene Rubber	EPDM	E	E	E	G to E	F to E	VG to E
Butyl	IIR	G to E	G	G to E	VG	P to G	VG to E
Oil Resistant
Butadiene Acrylonitrile (Nitrile)	NBR	G to E	F to G	P to G	F to VG	P to F	VG to E
Polychloroprene (Neoprene)	CR	F to G	G to E	P to G	G to E	P to G	VG to E
Chlorosulfonated Polyethylene (Hypalon®)	CSM	G	G to E	G to E	E	F to G	VG
Polyurethane	AU, EU	AU=P, EU=G	P to F	P	G	P to F	F to P
Epichlorhydrin	CO, ECO	G	P to F	F	G	P to F	G to VG
Specialty
Carboxylated Nitrile	XNBR	G to E	F to G	G	G to E	P	VG
Hydrogenated Nitrile	HNBR	E	G to E	G to E	E	P to F	VG
Silicone	SI	E	F to G	F to E	G	G	VG
Polysulfide (Thiokol)	T	G	P to G	P to G	G to VG	G	VG
Fluoroelastomers (Viton®)	FMK	E	G to E	P to G	G	P to F	VG to E
Polyacrylate	ACM	P to F	P to F	F	P to G	P to F	P
Nitrile / PVC	NBR/PVC	G to E	G	G	E	P to F	G
KEY
O - Out standing	Glycols	-diethylene glycol, polyethylene glycol, glycerine
E - Excellent	Esters	-ethyl acetate, cellosolve, dioctylphthalate, tricresyl phosphate
VG - Very Good	Acids	-acetic, boric, hydrochloric, nitric, phosphoric
G - Good	Alcohols	-ethyl, isopropyl, methyl
F - Fair	Bases	-alkilis, caustics, calcium hydroxide, sodium hydroxide, lye
P - Poor

Hypalon® and Viton® are the registered trademarks of DuPont Dow Elastomers.