Description

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

Properties

• FKM's are serviceable in continuous heat of up to 250º C and intermittent heat of up to 300º C.
• Satisfactory resistance to low temperatures of typically -20º C and - 40º C 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 M Pa % C h % º C
V725 1,80 70 8,5 165 175 22 40 -30/250
V737 1,96 70 5 165 175 22 50 -30/250
V733 1,99 72 4 165 175 22 55 -10/250
V726 1,78 75 8 165 175 22 45 -30/250
V736 2,10 80 4 150 175 22 55 -30/250
V025 1,80 70 8,5 165 175 22 40 -30/250
V037 1,96 70 5 165 175 22 50 -30/250
V033 1,99 72 4 165 175 22 55 -10/250
V026 1,78 75 8 165 175 22 45 -30/250
V036 2,10 80 4 150 175 22 45 -30/250
® Trademark registered by Dupont Dow Elastomer