Compatibility Guide

Pneuma-Seal Materials

Pneuma-Seal inflatable profiles are available in a wide variety of materials as noted below. Availability of specific elastomers vary somewhat from one profile to another. This information can be found in the Standard Profiles section with the applicable cross section's Available Materials tab. For a special charge, cross sections can be custom made using materials other than those indicated. Please note that the ratings given to the properties of the elastomers are based on Pawling compounds as they are applied to our inflatable products. The ratings of other manufacturers may differ as the result of compounding variables and end product use. Also note that the addition of fabric reinforcing overcomes drawbacks associated with some of the relatively poor physical characteristics of silicone, fluorosilicone, fluorocarbon rubber, and nitrile.

"Common Name” Base Polymer	EDPM or EP Rubber	Neoprene	Nitrile or NBE or Buna-N	Natural Rubber	Butyl	Silicone	Fluorosilicone	Fluorocarbon
Chemical Name	Ethylene Propylene	Chloroprene	Acrylonitrile Butadiene	Natural Isoprene	Isobutylene Isoprene	Silicone	Fluorosilicone	Fluorocarbon
ASTM Designation (ASTM D1418)	EP	CR	NBR	NR	IIR	VMQ	FVMQ	FKM
Tensile Strength (psi)	>2000	>2000	>2000	>2000	>2000	>1200	>1200	>1400
Hardness Range (Durometer A)	40-90	20-80	50-95	50-70	40-75	40-80	40-70	70-90
Tear Resistance	G	G	F	G	G	F	P	F
Abrasion Resistance	G to E	VG	G	E	G	P	F	G
Compression Set	G	G	G	E	F	VG	E	E
Resilience Cold	G	G	G	G	P	E	G	F
Resilience Hot	VG	VG	G	F	VG	E	E	E
Radiation Resistance	O	G	P	F to G	G	G	E	E
Impermeability to Gases	G	G	G	F	O	F	E	P
Acid Resistance
Mild Dilute	E	E	F to G	F to P	E	E	E	O
Strong Concentrate	G	G	F to G	P	G	F	G	E
Solvent Resistance
Aliphatic Hydrocarbons	P	F to G	E	P	P	P	G	E
Aromatic Hydrocarbons	P	P	P	P	P	P	E	E
Oxygenated (Ketones, etc)	G	P	P	P	G	P	F	F
Resistance To:
Swelling in Lubricating Oil	P	G	VG	P	P	P	E	O
Oil and Gasoline	P	G	E	P	P	F	G	E
Animal Oils	F	F	E	P	F	G	E	E
Water Absorption	VG	G	VG	VG	VG	E	E	E
Oxidation	E	VG	G	F to P	E	E	O	G
Ozone	O	VG	F	F to P	F to G	E	O	E
Sunlight Aging	O	VG	P	F to P	VG	E	E	G
Heat Aging	VG	G	G	G to F	G	O	E	E
Low Temperature	VG	G	F to G	G	G	O	G	F
Flame	P	G	P	P	P	F	E	E
Vegetable Oils	F	G	G	P	F	P	E	E
Chlorinated Hydrocarbons	P	P	F	P	P	P to F	F	G

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Pneuma-Seal

Pneuma-Seal Materials