Viton

Viton is a brand of synthetic Rubber and Fluoropolymer Elastomer commonly used in O-rings and other moulded or extruded goods. The name is a registered trademark of DuPont Performance Elastomers L.L.C..

Viton Fluoroelastomers are categorized under the ASTM D1418 & ISO 1629 designation of FKM. This class of Elastomers is a family comprising copolymers of hexafluoropropylene (HFP) and vinylidene fluoride (VDF or VF2), terpolymers of tetrafluoroethylene (TFE), vinylidene fluoride (VDF) and hexafluoropropylene (HFP) as well as perfluoromethylvinylether (PMVE) containing specialties. The fluorine content of the most common Viton grades varies between 66 and 70%.


Four families of Viton Polymers are available:

A(Dipolymers of VF2/HFP): General purpose sealing. Automotive, Aerospace fuels & lubricants

B(Terpolymers of VF2/HFP/TFE): Chemical Process plant, Power Utility Seals & Gaskets

F(Terpolymers of VF2/HFP/TFE): Oxygenated Automotive fuels. Concentrated aqueous inorganic acids, water, steam

Viton Extreme(Copolymers of TFE/Propylene and Ethylene/TFE/PMVE): Automotive, Oil Exploration, Special Sealing, Ultra Harsh Environments

The performance of Fluoroelastomers in aggressive chemicals depends on the nature of the base Polymer and the compounding ingredients used for moulding the final products (e.g. O-rings). This performance can vary significantly when end-users purchase Viton Polymer containing Rubber goods from different sources. Viton is generally compatible with hydrocarbons (an advantage over Buna-N, which is the most common O-ring material), but incompatible with ketones such as acetone and organic acids such as acetic acid. O-rings made of Viton are typically color coded as black.

Viton O-rings have been used safely for some time in the SCUBA diving world for divers who dive with gas blends referred to as Nitrox. Viton is used because it has a lower probability of catching fire, even with the increased percentages of oxygen found in Nitrox. It is also less susceptible to decay under increased oxygen conditions.

Viton Tubing or Viton lined Hoses are commonly recommended in automotive and other transportation fuel applications when high concentrations of biodiesel are required.


Altec have over 30 years experience in manufacturing Plastic & Rubber Extrusions, Extruded Profiles and Tubing. We're quite rightfully proud of our reputation for consistently meeting the needs of customers over that time. Because we've remained small and focussed we've also remained more attentitive, more cost effective and more responsive than larger manufacturers.

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Glossary of Extrusion Materials & Terms

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A.B.S.
Acrylic
Chemical Hose
Coextrusion
Compression Set
Cord
Cutting
D.E.H.P.-free PVC
D.O.P.-free PVC
Die
Dioctyl phthalate-free PVC
E.P.D.M.
Elastomer
Extruder
Extrusion
F.E.P.
F.K.M.
F.V.M.Q.
Flouroelastomer
Flourosilicone
Fluorocarbon
Fluoroelastomer
Fluoropolymer
Fluorosilicone
Gaskets
H.D.P.E.
Hose
L.D.P.E.
L.L.D.P.E.
M.D.P.E.
Masterbatch
Medical Tubing
N.B.R.
Natural Rubber
Neoprene
Nitrile P.V.C.
Nitrile Rubber
Nylon 12
Nylon 6
Nylon 66
P.A.
P.B.T.
P.C.
P.E.T.
P.E.X.
P.F.A.
P.M.M.A.
P.P.
P.T.F.E.
P.U.
P.U.R.
P.V.C.
P.V.C.U.
Peristaltic Pump Tubing
Peroxide Cured Silicone
Phthalate-free PVC
Pin
Plastic
Plasticiser
Platinum Cured Silicone
Polyamide
Polycarbonate
Polychloroprene
Polyester
Polyethylene
Polymer
Polyolefin
Polypropylene
Polythene
Polyurethane
PolyVinylChloride
Profile
Quality Assurance
Rigid P.V.C.
Rubber
S.P.C.
Santoprene
Seals
Silicon Rubber
Silicone Rubber
Strip
Synthetic Rubber
T.P.E.
Teflon
Thermoplastic
Thermoplastic Elastomer
Thermoplastic Rubber
Thermoset
Tubing
U.H.M.W.P.E.
U.P.V.C.
V.L.D.P.E.
Vacuum sizing
Vinyl
Viton
X.L.P.E.