Excellent Heat Stability (200°C) • Superior Aggressive Fuel and Chemical Resistance • High-Performance Elastomer

FKM/Viton™ Rubber’s Solutions

At WARCO, our proprietary Fluorozone® FKM rubber formulations are engineered to perform in the most extreme environments. Our Viton™ rubber—available as premium FKM rubber sheets—delivers exceptional thermal stability and superior chemical resistance.

Count on WARCO’s FKM rubber solutions for consistent, reliable performance in your most demanding applications.

Select any of these drop down options to learn more about FKM/Viton™ Rubber.

General Information

Trade Name:
Viton™, Fluorozone®

Generally Resistant To:
Acids, Hydrocarbons, Oils, Gasoline, Water, Heat, Fuels, Chemicals, Weather, Sunlight, Oxidation and Ozone

ASTM D 2000 / SAE J200 Classification:
HK

Chemical Name:
Fluoroelastomer

Generally Attacked By:
Ketones, Solvents, High pH Chemicals and Low Molecular Weight Carbonyls

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

ASTM D-1418 Designation:
FKM

Elongation:
100% to 500%

Hardness Range (Durometer Shore A):
60 to 90

Compression Set:
Very Good

Abrasion Resistance:
Good

Impact Resistance:
Good

Rebound Rating:
Cold: Fair to Good
Hot: Good to Excellent

Tear Resistance:
Fair to Good

Flame Resistance:
Very Good to Excellent

Flex Cracking Resistance:
Good

Minimum Service Temperature:
-20°F

Maximum Service Temperature:
+600°F

Recommended Shelf Life:
20 years

Ozone Resistance:
Outstanding

Steam Resistance:
Poor to Good

Weather Resistance:
Excellent to Outstanding

Oxidization Resistance:
Outstanding

Gas Permeability:Fair to Good
Good to Excellent

Sunlight Resistance:
Good to Outstanding

Water Resistance:
Very Good

Radiation Resistance:
Good, 7 x 104 Ga Gy
Fair, 2 x 105 Ga Gy

Acetone:
NOT RECOMMENDED

Amonium Hydroxide:
Minor to Moderate Effect

Animal Fats:
RECOMMENDED: Little or Minor Effect

Carbon Dioxide:
RECOMMENDED: Little or Minor Effect

Chlorine:
DRY: RECOMMENDED: Little or Minor Effect
WET: RECOMMENDED: Little or Minor Effect

Fluorine (Liquid):
Minor to Moderate Effect

Fuel Oil:
RECOMMENDED: Little or Minor Effect

Gasoline:
RECOMMENDED: Little or Minor Effect

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

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

Kerosene:
RECOMMENDED: Little or Minor Effect

Methyl Ethyl Ketone:
NOT RECOMMENDED

Mineral Oil:
RECOMMENDED: Little or Minor Effect

Naptha:
RECOMMENDED: Little or Minor Effect

Natural Gas:
RECOMMENDED: Little or Minor Effect

Nitric Acid:
Concentrate: RECOMMENDED: Little or Minor Effect
Dillute: RECOMMENDED: Little or Minor Effect
Red Fuming: Moderate to Severe

Petroleum:
Below 250: RECOMMENDED: Little or Minor Effect
Above 250: Minor to Moderate Effect

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

Propane:
RECOMMENDED: Little or Minor Effect

Salt Water:
RECOMMENDED: Little or Minor Effect

Skydrol:
Skydrol 500: NOT RECOMMENDED
Skydrol 7000: Minor to Moderate Effect

Sodium Hydroxide:
Minor to Moderate Effect

Sulfuric Acid:
Concentrate: RECOMMENDED: Little or Minor Effect
Dillute: RECOMMENDED: Little or Minor Effect
20% Oleum: RECOMMENDED: Little or Minor Effect

Toluene:
RECOMMENDED: Little or Minor Effect

Transformer Oil:
RECOMMENDED: Little or Minor Effect

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 FKM/Viton™ Rubber

  • Superior Heat Stability: Maintains performance at high temperatures (up to 450°F or more).
  • Aggressive Fuel & Chemical Resistance: Ideal for applications with aggressive fuels, oils, and chemicals.
  • Outstanding Durability: Designed to offer long-lasting service even in harsh conditions.
  • Versatile Custom Formulations: Tailor-made to match your specific application requirements.
  • Robust Environmental Resistance: Excels against oxidation, ozone, and weathering.
  • Consistent Quality Control: Rigorously monitored throughout production for reliable performance.

Our FKM/Viton™ Rubber Products are available below in Premium, 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.

Two high-quality choices to meet your fluoroelastomer needs:

Fluorozone® Performance FKM/FPM Fluoroelastomer (Fluorocarbon) is made with 100% domestic-made premium Fluoroelastomer polymer.

Viton™, a Brand of Chemours Company Partner, Logo

Viton™ is the most specified brand of fluoroelastomer for fuel system seals, expansion joints and gaskets.

Viton™ Sheet Rubber Products

Viton™ A Sheet

Durometer: 60 to 80 Temperature Range: -20°F to +450°F
Specs: ASTM D 2000 M1HK

Viton™ B Sheet

Durometer: 70 to 75 Temperature Range: -20°F to +450°F
Specs: ASTM D2000 M1HK

Viton™ A Brown Sheet

Durometer: 75 Temperature Range: –20°F to +400°F
Primary Feature: Viton™ fluoroelastomer

Viton™ A Specification Grade Sheet

Durometer: 75 Temperature Range: -20°F to +500°F
Specs: MIL-R-83248C Type II Class 2, AMS 3216G

Viton™ A FDA Sheet

Durometer: 75 Temperature Range: -20°F to +450°F
Specs: FDA Approved Ingredients per 21 CFR 177.2600

Commercial Grade Fluorozone FKM Rubber

Fluorozone® Brown Premium Performance FKM

Durometer: 75 Temperature Range: –20°F to +400°F
Primary Feature: Made in the USA

Fluorozone® Blue Premium Performance FKM

Durometer: 75 Temperature Range: –20°F to +400°F
Primary Feature: Made in the USA

Fluorozone® Premium Performance FKM

Durometer: 60 to 75 Temperature Range: -20°F to +400°F
Primary Feature: Made in the USA

Specification Grade Fluorozone FKM Rubber

Fluorozone® Mil-Spec Performance FKM

Durometer: 75 Temperature Range: –20°F to +500°F
Specs: MIL-R-83248C Type II Class 2, AMS 3216G

Specialty Fluorozone FKM Rubber

Fluorozone® FDA Performance FKM

Durometer: 60 to 75 Temperature Range: -20°F to +450°F
Specs: FDA Approved Ingredients per 21 CFR 177.2600

Compound Number, Durometer and Material Type
060F0206 – 60 Durometer FKM 060F0207 – 60 Durometer FKM 060F0209 – 60 Durometer FKM 060F0210 – 60 Durometer FKM 060F0216 – 60 Durometer FKM
060F0220 – 60 Durometer FKM 060F0221 – 60 Durometer FKM 060F0228 – 60 Durometer FKM 060F0239 – 60 Durometer FKM 060F0241 – 60 Durometer FKM
060F0244 – 60 Durometer FKM 060F0259 – 60 Durometer FKM 060F3182 – 60 Durometer FKM 060F3192 – 60 Durometer FKM 065F0196 – 65 Durometer FKM
065F0197 – 65 Durometer FKM 065F0242 – 65 Durometer FKM 065F0249 – 65 Durometer FKM 065F0254 – 65 Durometer FKM 065F0255 – 65 Durometer FKM
065F4177 – 65 Durometer FKM 065F4180 – 65 Durometer FKM 066F0205 – 66 Durometer FKM 066F3192 – 66 Durometer FKM 070F0195 – 70 Durometer FKM
070F0199 – 70 Durometer FKM 070F0202 – 70 Durometer FKM 070F0226 – 70 Durometer FKM 070F0227 – 70 Durometer FKM 070F0231 – 70 Durometer FKM
070F0233 – 70 Durometer FKM 070F0235 – 70 Durometer FKM 070F0248 – 70 Durometer FKM 070F0253 – 70 Durometer FKM 070F0257 – 70 Durometer FKM
070F0261 – 70 Durometer FKM 070F3179 – 70 Durometer FKM 070F3181 – 70 Durometer FKM 070F3184 – 70 Durometer FKM 070F3190 – 70 Durometer FKM
075F0198 – 75 Durometer FKM 075F0200 – 75 Durometer FKM 075F0201 – 75 Durometer FKM 075F0203 – 75 Durometer FKM 075F0204 – 75 Durometer FKM
075F0205 – 75 Durometer FKM 075F0211 – 75 Durometer FKM 075F0212 – 75 Durometer FKM 075F0213 – 75 Durometer FKM 075F0217 – 75 Durometer FKM
075F0218 – 75 Durometer FKM 075F0219 – 75 Durometer FKM 075F0223 – 75 Durometer FKM 075F0224 – 75 Durometer FKM 075F0225 – 75 Durometer FKM
075F0229 – 75 Durometer FKM 075F0232 – 75 Durometer FKM 075F0234 – 75 Durometer FKM 075F0236 – 75 Durometer FKM 075F0237 – 75 Durometer FKM
075F0238 – 75 Durometer FKM 075F0240 – 75 Durometer FKM 075F0243 – 75 Durometer FKM 075F0245 – 75 Durometer FKM 075F0246 – 75 Durometer FKM
075F0247 – 75 Durometer FKM 075F0251 – 75 Durometer FKM 075F0252 – 75 Durometer FKM 075F0258 – 75 Durometer FKM 075F0262 – 75 Durometer FKM
075F0265 – 75 Durometer FKM 075F0266 – 75 Durometer FKM 075F2183 – 75 Durometer FKM 075F3176 – 75 Durometer FKM 075F3189 – 75 Durometer FKM
075F4188 – 75 Durometer FKM 080F0193 – 80 Durometer FKM 080F0194 – 80 Durometer FKM 080F0260 – 80 Durometer FKM 080F0263 – 80 Durometer FKM
080F3191 – 80 Durometer FKM 080F5185 – 80 Durometer FKM 090F0222 – 90 Durometer FKM 090F0250 – 90 Durometer FKM 090F0264 – 90 Durometer FKM

Viton™ and any associated logo is a trademark or copyright of THE CHEMOURS COMPANY FC, LLC used under license by West American Rubber Company, LLC. Viton™ is a registered trademark of DuPont Performance Elastomers. All text containing the word “Viton” is trademarked by THE CHEMOURS COMPANY FC, LLC regardless of whether the ™ mark is attached or not. | Fluorozone® is a trademark of West American Rubber Company, LLC

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