ASTM D1418, ISO 1629 Designation: FFKM

ASTM D2000, SAE J200 Type/Class: JK, HK


General Temperature Range: -35° to +500° F




  • Heat resistance up to 600˚F
  • Resistance to wide range of oils and solvents; specially all aliphatic, aromatic and halogenated hydrocarbons, acids, animal and vegetable oils.
  • Excellent outgassing performance in vacuum environments.
  • Plasma resistance
  • Low particle generation / highest purity
  • Extended lifetime Cost down




  • Avoid low-molecular-weight, fully halogenated fluids and molten alkali metals.
  • Very high cost
  • Difficult to process




  • Quartz Rod Seals
  • Bell Jar Seals
  • High Temperature Valve Seals
  • KF Fitting Seals
  • Furnace Door Seals
  • Slit Valve
  • Window Seals
  • Isolator Valve Seals
  • Chamber Lid Seals
  • Gas Inlet Seals
  • Quartz Tube Joints



February 23rd
Here is a great article on grease compatibility . . .
The Skinny on Grease Compatibility

July 30th
 Here is a link to a great article about how to avoid particulate contamination . . . Obviously it goes without saying that a sealing...
How to Avoid Particulate Contamination