MATERIAL GUIDE
FKM
Viton®
We specialize in FKM machining — custom CNC machining and molding of FKM fluoroelastomer (Viton® and equivalent grades). FKM delivers excellent heat, oil and chemical resistance for demanding sealing applications.
Key Properties
Excellent heat resistance (up to about 200°C / 400°F)
Outstanding oil and fuel resistance
Good chemical resistance
Low compression set
Wide hardness range
Typical Applications
O-rings and seals
Fuel system components
Chemical processing seals
Gaskets and diaphragms
Oilfield equipment parts
Machining Capabilities
FKM can be CNC machined from rod and sheet stock for prototype and low-volume parts, or molded for production quantities. Dimensional inspection before shipping.
For extreme chemicals, see our FFKM machining page.
Browse our full range of machined engineering plastics and elastomers here.
FAQ：
Q: What is the temperature range of FKM?
A: FKM typically operates from about -20°C up to 200°C (400°F), depending on grade.
Q: What is the difference between FKM and FFKM?
A: FFKM (perfluoroelastomer) offers even higher temperature and chemical resistance than FKM — used where FKM reaches its limits.
Q: Can FKM seals be machined?
A: Yes — prototype and low-volume FKM seals are commonly CNC machined from stock; production runs are molded.