Description

Fluoroelastomer rubber or FKM or VITON® is based on hexafluoropropylene vinylidene fluoride.

Properties

• FKM's are serviceable in continuous heat of up to 482 F and intermittent heat of up to 572 F.
• Satisfactory resistance to low temperatures of typically -4 F and - 40 F by use of special grades.
• FKM's exhibit good flame resistance and are usually self extinguishing upon removal of flame source.
• All FKM's have excellent resistance to oxygen, ozone and natural weathering..
• FKM compounds have outstandig resistance to compression, especially at elevated temperatures.

• Resistance to chemicals; amongst all synthetic rubbers FKM's are the most resistant to many of the solvents and chemicals, giving long service where other materials do not. Excellent resistance against hydrocarbons, aliphatics, aromatic and chlorinated chemicals. Good resistance to acids and alkali's including oxidants. They do have poor performance against ethers, ketones, and bases.
FKM rubber (VITON ® ): BLACK
Ref. Specific Gravity Hardness Tens. Stren. Elong. Compres. Set Working
Temp.
  g/cm3 Shore A psi % C h % F
V725 1,80 70 1200 165 175 22 40 -22/482
V737 1,96 70 700 165 175 22 50 +22/482
V733 1,99 72 550 165 175 22 55 -14/482
V726 1,78 75 1140 165 175 22 45 -22/482
V736 2,10 80 550 150 175 22 55 -22/482
V025 1,80 70 1210 165 175 22 40 -22/482
V037 1,96 70 700 165 175 22 50 -22/482
V033 1,99 72 550 165 175 22 55 -14/482
V026 1,78 75 1140 165 175 22 45 -22/472
V036 2,10 80 550 150 175 22 45 -22/482
® Trademark registered by Dupont Dow Elastomer