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Pawling Engineered Products

Engineered Elastomeric Technologies for Sealing, Clamping, Actuating

Thermoset Material Compatibility

Thermoset Material Compatibility

Our Pneuma-Seal® inflatable profiles and other specialty rubber products 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 EP's compounds as they are applied to our inflatable and other compression seal 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
EPDM
or EP Rubber
Neoprene Nitrile
or Buna-N
Natural
Rubber
Butyl Silicone Fluoro-
silicone
Fluoro-
carbon
Chemical Name Ethylene
Propylene
Chloro-
prene
Acrylonitrile
Butadiene
Natural
Isoprene
Isobutylene
Isoprene
Silicone Fluoro-
silicone
Fluoro-
carbon
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

Legend: O = Outstanding | E = Excellent | VG = Very Good | G = Good | F = Fair | P = Poor