Excellent Heat, Ozone & Sunlight Resistance • Outstanding Alkali, Acid & Oxygenated Solvent Resistance • Superior Water/Steam Resistance

EPDM Rubber Solutions

WARCO’s EPDM rubber products are designed to deliver exceptional performance in outdoor and high-temperature applications. Our EPDM rubber material offers excellent heat, ozone, and sunlight resistance along with superior water and steam performance. Whether you need an EPDM rubber sheet or roll, our custom formulations meet diverse industry demands.

Select any of these drop down options to learn more about EPDM Rubber. Our team has organized lists of key properties relating to the rubber products which use the EPDM polymer. We encourage you to select through these lists and advise that you reach out to us directly for any questions so we can direct you to our technical team.

General Information

Common Name:
EPDM, EP Rubber

Generally Resistant To:
Oxidation, Ozone, Sunlight, Abrasion, Fireproof Hydraulic Fluids, Water, and Alkalis

ASTM D 2000 / SAE J200 Classification:
BA, CA

Chemical Name:
Ethylene-propylene Terpolymer

Generally Attacked By:
Kerosene, Hydrocarbons, and Solvents

MIL-R-3065 / SAE J-14 / MIL-STD-417 Classification:
RS

ASTM D-1418 Designation:
EPDM

Elongation:
100% to 700%

Hardness Range (Durometer Shore A):
35 to 90

Compression Set:
Fair to Good

Abrasion Resistance:
Good to Excellent

Impact Resistance:
Very Good

Rebound Rating:
Fair to Very Good

Tear Resistance:
Fair

Flame Resistance:
Poor

Flex Cracking Resistance:
Good to Very Good

Minimum Service Temperature:
-75°F

Maximum Service Temperature:
+350°F

Recommended Shelf Life:
5 to 10 years

Ozone Resistance:
Excellent

Steam Resistance:
Excellent

Weather Resistance:
Excellent

Oxidization Resistance:
Excellent

Gas Permeability:
Fair to Good

Sunlight Resistance:
Outstanding

Water Resistance:
Excellent

Radiation Resistance:
Good, 1 x 105 Ga Gy
Poor, 2 x 106 Ga Gy

Acetone:
Recommended: Little to Minor Effect

Amonium Hydroxide:
Recommended: Little to Minor Effect

Animal Fats:
Minor to Moderate Effect

Carbon Dioxide:
Minor to Moderate Effect

Chlorine:
DRY: – – –
WET: Moderate to Severe Effect

Fluorine (Liquid):
Moderate to Severe Effect

Fuel Oil:
NOT RECOMMENDED

Gasoline:
NOT RECOMMENDED

Hydrochloric Acid 37%:
HOT: Moderate to Severe Effect
COLD: RECOMMENDED: Little or Minor Effect

Hydrochloric Acid Concentrate 37%:
HOT: NOT RECOMMENDED
COLD: Minor to Moderate Effect

Kerosene:
NOT RECOMMENDED

Methyl Ethyl Ketone:
RECOMMENDED: Little or Minor Effect

Mineral Oil:
NOT RECOMMENDED

Naptha:
NOT RECOMMENDED

Natural Gas:
NOT RECOMMENDED

Nitric Acid:
Concentrate: Moderate to Severe Effect
Dillute: Minor to Moderate Effect
Red Fuming: NOT RECOMMENDED

Petroleum:
Below 250: NOT RECOMMENDED
Above 250: NOT RECOMMENDED

Phosphoric Acid:
20%: RECOMMENDED: Little or Minor Effect
45%: Minor to Moderate Effect

Propane:
NOT RECOMMENDED

Salt Water:
RECOMMENDED: Little or Minor Effect

Skydrol:
Skydrol 500: RECOMMENDED: Little or Minor Effect
Skydrol 7000: RECOMMENDED: Little or Minor Effect

Sodium Hydroxide:
RECOMMENDED: Little or Minor Effect

Sulfuric Acid:
Concentrate: Minor to Moderate Effect
Dillute: Minor to Moderate Effect
20% Oleum: NOT RECOMMENDED

Toluene:
NOT RECOMMENDED

Transformer Oil:
NOT RECOMMENDED

Vegetable Oils:
RECOMMENDED: Little or Minor Effect

Vinegar:
RECOMMENDED: Little or Minor Effect

  • Actual shelf life could vary dramatically based on storage conditions
  • Store in a cool, dry place with temperature below 75°F
  • Keep away from direct heat or open flames
  • Avoid contact with solvents or other fluids
  • Do not store in direct sunlight
  • Keep products wrapped or sealed to minimize the absorption of moisture
  • Store in a relaxed condition free from tension, compression or other deformation

See Rubber Storage Conditions for more information on how to properly store your rubber products

Benefits of EPDM Rubber

  • Excellent Heat & Ozone Resistance: Maintains performance under intense sunlight and high temperatures.
  • Superior Chemical Resistance: Withstands exposure to alkalis, acids, and oxygenated solvents.
  • Outstanding Water & Steam Resistance: Ideal for applications involving moisture and high-pressure steam.
  • Wide Temperature Flexibility: Performs well across an extended temperature range (up to +300°F).
  • Customizable Solutions: Tailored EPDM rubber products—sheet or roll—designed for your specific needs.
  • Durable & Extendible: Engineered for lasting performance in outdoor and industrial settings.
  • Spec Grade Materials: Meets ASTM, MIL, and AMS classifications for high-quality industrial use.

Our EPDM Rubber Products are available below in Commercial & Spec Grades or as a specialty product.
Each product can be customized to meet your application, such as meeting your specifications, physical properties, & various material aspects.

Applications of EPDM Rubber

  • Outdoor construction components and seals

  • Automotive weatherstripping and gaskets
  • HVAC and refrigeration systems
  • Electrical insulation and weatherproofing
  • Industrial water and steam applications
  • High-performance roofing and waterproof membranes
  • Custom engineered solutions for demanding environments

Specification Grade EPDM Rubber

MIL–R–21252 / MIL-DTL-21252

Durometer: 85 Temperature Range: -40°F to +220°F
Specs: MIL–R–21252 / MIL-DTL-21252

MIL–R–900

Durometer: 45 Temperature Range: -40°F to +180°F
Specs: MIL–R–900

MIL–R–83285 / SAE-AMS-R-83285

Durometer: 80 Temperature Range: -60°F to +300°F
Specs: MIL–R–83285 / SAE-AMS-R-83285

ASTM D2000 M4AA

Durometer: 40 to 70 Temperature Range: -60°F to +300°F
Specs: ASTM D2000 M4AA

Specialty EPDM

PURE™ – NSF/ANSI/CAN 61 Certified Rubber

Durometer: 75 Tensile: 2000 psi
Specs: NSF/ANSI/CAN 61 & 372

Peroxide Cure EPDM

Durometer: 40 to 80 Temperature Range: -55°F to +300°F
Specs: ASTM D2000 M1CA

Commercial Grade EPDM Rubber

Commercial EPDM

Durometer: 50 to 70 Temperature Range: -40°F to +220°F
Specs: ASTM D2000 M1AA

Compound Number, Durometer and Material Type
035K1042 – 35 Durometer EPDM 035K1066 – 35 Durometer EPDM 040K0814 – 40 Durometer EPDM 040K0831 – 40 Durometer EPDM 040K0836 – 40 Durometer EPDM
040K0840 – 40 Durometer EPDM 040K0859 – 40 Durometer EPDM 040K0866 – 40 Durometer EPDM 040K0871 – 40 Durometer EPDM 040K0900 – 40 Durometer EPDM
040K0921 – 40 Durometer EPDM 040K0934 – 40 Durometer EPDM 040K0937 – 40 Durometer EPDM 040K0938 – 40 Durometer EPDM 040K0939 – 40 Durometer EPDM
040K0940 – 40 Durometer EPDM 040K0952 – 40 Durometer EPDM 040K0954 – 40 Durometer EPDM 040K0967 – 40 Durometer EPDM 040K0973 – 40 Durometer EPDM
040K0974 – 40 Durometer EPDM 040K0981 – 40 Durometer EPDM 040K0982 – 40 Durometer EPDM 040K0983 – 40 Durometer EPDM 040K1043 – 40 Durometer EPDM
040K1051 – 40 Durometer EPDM 045K0817 – 45 Durometer EPDM 045K0860 – 45 Durometer EPDM 045K0936 – 45 Durometer EPDM 045K0985 – 45 Durometer EPDM
045K0999 – 45 Durometer EPDM 045K1046 – 45 Durometer EPDM 045K1079 – 45 Durometer EPDM 050K0819 – 50 Durometer EPDM 050K0823 – 50 Durometer EPDM
050K0830 – 50 Durometer EPDM 050K0834 – 50 Durometer EPDM 050K0855 – 50 Durometer EPDM 050K0901 – 50 Durometer EPDM 050K0918 – 50 Durometer EPDM
050K0922 – 50 Durometer EPDM 050K0924 – 50 Durometer EPDM 050K0944 – 50 Durometer EPDM 050K0945 – 50 Durometer EPDM 050K0964 – 50 Durometer EPDM
050K0965 – 50 Durometer EPDM 050K0966 – 50 Durometer EPDM 050K0975 – 50 Durometer EPDM 050K0980 – 50 Durometer EPDM 050K0991 – 50 Durometer EPDM
050K1011 – 50 Durometer EPDM 050K1013 – 50 Durometer EPDM 050K1015 – 50 Durometer EPDM 050K1028 – 50 Durometer EPDM 050K1034 – 50 Durometer EPDM
050K1045 – 50 Durometer EPDM 050K1047 – 50 Durometer EPDM 050K1050 – 50 Durometer EPDM 050K1056 – 50 Durometer EPDM 050K1071 – 50 Durometer EPDM
050K1072 – 50 Durometer EPDM 050K1073 – 50 Durometer EPDM 050K1081 – 50 Durometer EPDM 050K2170 – 50 Durometer EPDM 054K0924 – 54 Durometer EPDM
055K0826 – 55 Durometer EPDM 055K0832 – 55 Durometer EPDM 055K0889 – 55 Durometer EPDM 055K0924 – 55 Durometer EPDM 055K0951 – 55 Durometer EPDM
055K0971 – 55 Durometer EPDM 055K0990 – 55 Durometer EPDM 055K1005 – 55 Durometer EPDM 055K1006 – 55 Durometer EPDM 055K1024 – 55 Durometer EPDM
055K1031 – 55 Durometer EPDM 060K0815 – 60 Durometer EPDM 060K0818 – 60 Durometer EPDM 060K0821 – 60 Durometer EPDM 060K0822 – 60 Durometer EPDM
060K0827 – 60 Durometer EPDM 060K0828 – 60 Durometer EPDM 060K0833 – 60 Durometer EPDM 060K0835 – 60 Durometer EPDM 060K0845 – 60 Durometer EPDM
060K0868 – 60 Durometer EPDM 060K0869 – 60 Durometer EPDM 060K0891 – 60 Durometer EPDM 060K0892 – 60 Durometer EPDM 060K0897 – 60 Durometer EPDM
060K0902 – 60 Durometer EPDM 060K0904 – 60 Durometer EPDM 060K0905 – 60 Durometer EPDM 060K0908 – 60 Durometer EPDM 060K0912 – 60 Durometer EPDM
060K0913 – 60 Durometer EPDM 060K0917 – 60 Durometer EPDM 060K0919 – 60 Durometer EPDM 060K0925 – 60 Durometer EPDM 060K0926 – 60 Durometer EPDM
060K0930 – 60 Durometer EPDM 060K0931 – 60 Durometer EPDM 060K0933 – 60 Durometer EPDM 060K0941 – 60 Durometer EPDM 060K0942 – 60 Durometer EPDM
060K0943 – 60 Durometer EPDM 060K0946 – 60 Durometer EPDM 060K0948 – 60 Durometer EPDM 060K0950 – 60 Durometer EPDM 060K0953 – 60 Durometer EPDM
060K0955 – 60 Durometer EPDM 060K0958 – 60 Durometer EPDM 060K0962 – 60 Durometer EPDM 060K0963 – 60 Durometer EPDM 060K0969 – 60 Durometer EPDM
060K0972 – 60 Durometer EPDM 060K0978 – 60 Durometer EPDM 060K0979 – 60 Durometer EPDM 060K0987 – 60 Durometer EPDM 060K0988 – 60 Durometer EPDM
060K0992 – 60 Durometer EPDM 060K0994 – 60 Durometer EPDM 060K1010 – 60 Durometer EPDM 060K1022 – 60 Durometer EPDM 060K1023 – 60 Durometer EPDM
060K1027 – 60 Durometer EPDM 060K1029 – 60 Durometer EPDM 060K1030 – 60 Durometer EPDM 060K1035 – 60 Durometer EPDM 060K1041 – 60 Durometer EPDM
060K1053 – 60 Durometer EPDM 060K1054 – 60 Durometer EPDM 060K1077 – 60 Durometer EPDM 060K1078 – 60 Durometer EPDM 060K1080 – 60 Durometer EPDM
060K2000 – 60 Durometer EPDM 065K0841 – 65 Durometer EPDM 065K0863 – 65 Durometer EPDM 065K0864 – 65 Durometer EPDM
065K0920 – 65 Durometer EPDM 065K0923 – 65 Durometer EPDM 065K0929 – 65 Durometer EPDM 065K0977 – 65 Durometer EPDM 065K0984 – 65 Durometer EPDM
065K1009 – 65 Durometer EPDM 065K1025 – 65 Durometer EPDM 065K1036 – 65 Durometer EPDM 065K1068 – 65 Durometer EPDM 065K1070 – 65 Durometer EPDM
065K1132 – 65 Durometer EPDM 066K0924 – 66 Durometer EPDM 070K0816 – 70 Durometer EPDM 070K0824 – 70 Durometer EPDM 070K0825 – 70 Durometer EPDM
070K0829 – 70 Durometer EPDM 070K0837 – 70 Durometer EPDM 070K0856 – 70 Durometer EPDM 070K0858 – 70 Durometer EPDM 070K0861 – 70 Durometer EPDM
070K0862 – 70 Durometer EPDM 070K0865 – 70 Durometer EPDM 070K0867 – 70 Durometer EPDM 070K0870 – 70 Durometer EPDM 070K0872 – 70 Durometer EPDM
070K0873 – 70 Durometer EPDM 070K0874 – 70 Durometer EPDM 070K0875 – 70 Durometer EPDM 070K0876 – 70 Durometer EPDM 070K0877 – 70 Durometer EPDM
070K0878 – 70 Durometer EPDM 070K0879 – 70 Durometer EPDM 070K0888 – 70 Durometer EPDM 070K0893 – 70 Durometer EPDM 070K0903 – 70 Durometer EPDM
070K0909 – 70 Durometer EPDM 070K0910 – 70 Durometer EPDM 070K0911 – 70 Durometer EPDM 070K0914 – 70 Durometer EPDM 070K0915 – 70 Durometer EPDM
070K0916 – 70 Durometer EPDM 070K0935 – 70 Durometer EPDM 070K0968 – 70 Durometer EPDM 070K0970 – 70 Durometer EPDM 070K0976 – 70 Durometer EPDM
070K0986 – 70 Durometer EPDM 070K0995 – 70 Durometer EPDM 070K0997 – 70 Durometer EPDM 070K1003 – 70 Durometer EPDM 070K1004 – 70 Durometer EPDM
070K1014 – 70 Durometer EPDM 070K1026 – 70 Durometer EPDM 070K1032 – 70 Durometer EPDM 070K1033 – 70 Durometer EPDM 070K1037 – 70 Durometer EPDM
070K1038 – 70 Durometer EPDM 070K1039 – 70 Durometer EPDM 070K1040 – 70 Durometer EPDM 070K1044 – 70 Durometer EPDM 070K1049 – 70 Durometer EPDM
070K1052 – 70 Durometer EPDM 070K1055 – 70 Durometer EPDM 070K1067 – 70 Durometer EPDM 075K0928 – 75 Durometer EPDM 075K0956 – 75 Durometer EPDM
075K0989 – 75 Durometer EPDM 075K0998 – 75 Durometer EPDM 075K1069 – 75 Durometer EPDM 080K0838 – 80 Durometer EPDM 080K0839 – 80 Durometer EPDM
080K0842 – 80 Durometer EPDM 080K0846 – 80 Durometer EPDM 080K0847 – 80 Durometer EPDM 080K0848 – 80 Durometer EPDM 080K0850 – 80 Durometer EPDM
080K0852 – 80 Durometer EPDM 080K0853 – 80 Durometer EPDM 080K0880 – 80 Durometer EPDM 080K0881 – 80 Durometer EPDM 080K0882 – 80 Durometer EPDM
080K0886 – 80 Durometer EPDM 080K0951 – 80 Durometer EPDM 080K0959 – 80 Durometer EPDM 080K0960 – 80 Durometer EPDM 080K0961 – 80 Durometer EPDM
080K0996 – 80 Durometer EPDM 080K1000 – 80 Durometer EPDM 080K1001 – 80 Durometer EPDM 080K1002 – 80 Durometer EPDM 080K1007 – 80 Durometer EPDM
080K1012 – 80 Durometer EPDM 080K1017 – 80 Durometer EPDM 080K1018 – 80 Durometer EPDM 080K1019 – 80 Durometer EPDM 080K1020 – 80 Durometer EPDM
080K1048 – 80 Durometer EPDM 080K1074 – 80 Durometer EPDM 080K1075 – 80 Durometer EPDM 080K1076 – 80 Durometer EPDM 085K0895 – 85 Durometer EPDM
085K0896 – 85 Durometer EPDM 085K0932 – 85 Durometer EPDM 085K0949 – 85 Durometer EPDM 085K0993 – 85 Durometer EPDM 090K0907 – 90 Durometer EPDM
090K0927 – 90 Durometer EPDM 090K1016 – 90 Durometer EPDM

Data presented here was gathered from several sources including Uniroyal Chemical Company, Inc., The Los Angeles Rubber Group, Inc., and Compass Publications

Our rubber products are a proprietary blend of various polymers formulated to meet stated physicals and specifications. The named product polymer is not necessarily the primary polymer representing the highest percentage of the polymer blend. Determination of the suitability of the goods for the uses and applications contemplated by Buyer and others shall be the sole responsibility of the Buyer or user. No guaranty is given with respect to length of service on any particular application. Suggestions or recommendations made by Seller in its product literature concerning uses or applications of the goods are believed to be reliable, but Seller makes no warranty or guaranty of results to be obtained since the conditions of the use and application by Buyer and others are beyond Seller’s control.

View complete Terms & Conditions of Sale for suitability of use and formulations