Viton O-Rings | Seal & Design, Inc.

Viton O-Rings

Viton GasketsViton® (fluorocarbon rubber) has excellent resistance to high temperatures, ozone, oxygen, mineral oil, synthetic hydraulic fluids, fuels, aromatics and many organic solvents and chemicals making it a good choice for an o-ring material.

Low temperature resistance is normally not favorable and for static applications is limited to approximately -15 °F (-26 °C) although in certain situations it is suitable down to -40 °F (-40 °C) Under dynamic conditions, the lowest service temperature is between 5 °F and 0 °F (-15 °C and -18 °C).

Gas permeability is very low and similar to that of butyl rubber. Special fluorocarbon compounds exhibit an improved resistance to acids, fuels, water and steam.

Viton® O-Ring General Attributes
  • Excellent Heat resistance
  • Excellent resistance to oils
  • Low compression set
  • Good fuel resistance
  • Excellent ozone and weather resistance
Common Applications for Viton O-Rings
  • Engine Oil Seals
  • Fuel Systems
  • High Temperature Seals
  • Petrochemical Systems

Viton Selection Guide [PDF]

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Viton O-Ring Materials

Available Specifications
Key Characteristics
Avg. Temp
ASTM D2000
Available in black or brown. Excellent resistance to head and a wide range of chemicals.
5° to 446°F
Viton O-Rings Commercial Datasheet
AMS 7276, M83248/1
Mil-R-83248 CL 1
Dwg AS3208, AS3209
Meets AMS7276. Excellent resistance to heat, engine oils and lubricants, ozone and weathering. Low compression set and good
fuel resistance.
-13° to 392°F
Viton O-Rings AMS7276 Datasheet
AMS 7259, M83248/2
Mil-R-83248 CL 2
Dwg AS3581
Meets AMS7259. Similar to AMS 7276 above except in 90-durometer hardness.
-13° to 392°F
Viton O-Rings AMS7259 Datasheet
GLT Type
M84385/1, AMS-R-83485
Meets AMS-R-83485. Excellent heat resistance and low temperature performance.
GLT Type Viton.
-35° to 400°F
Viton O-Rings
GLT Datasheet
GFLT Viton
ASTM D2000 / SAE J200
M7HK 710 A1-10 B38
EF31 Z1 Z2 Z3
GFLT based FKM. Good for low temp with
improved chemical resistance. Listed for
fuel/alcohol applications.
-31° to 392°F
Viton O-Rings GFLT Datasheet
FDA Viton
ASTM D2000 / SAE J200
M2HK 710 A1-10 B37
B38 EF31 F15 Z
FDA, USDA, and NSF grades available.
-4° to 392°F
FDA Viton Datasheet
Viton Extreme (ETP)

Extreme chemical service. Strong bases and amines. Peroxide cured.
-4° to 392°F
Viton O-Rings Extreme Datasheet
Viton V71C

Low Temperature applications. Low compression set with good elongation properties.
-60° to 437°F
Viton O-Rings V71C Datasheet
Viton V91A

Low Temperature applications. Explosive decompression resistant.
-51° to 437°F
Viton O-Rings V91A Datasheet