MATERIAL GUIDE
HNBR
Therban® / Zetpol®
We specialize in HNBR machining — custom CNC machining and molding of hydrogenated nitrile rubber (Therban®, Zetpol® and equivalent grades). HNBR combines excellent oil, fuel and heat resistance with high mechanical strength.
Key Properties
Excellent oil and fuel resistance
High heat resistance (up to about 150°C / 300°F)
High tensile strength and abrasion resistance
Good ozone resistance
Wide hardness range
Typical Applications
Automotive O-rings and seals
Fuel system components
Oilfield seals
Hydraulic system parts
Industrial gaskets
Machining Capabilities
HNBR can be CNC machined from rod and sheet stock for prototype and low-volume parts, or molded for production. Dimensional inspection before shipping.
FAQ：
Q: What is the temperature range of HNBR?
A: HNBR typically operates from about -30°C up to 150°C (300°F), depending on grade.
Q: What is the difference between NBR and HNBR?
A: HNBR is hydrogenated NBR — it offers better heat and ozone resistance with similar oil resistance.
Q: Is HNBR good for fuel applications?
A: Yes — HNBR’s fuel resistance and strength make it a strong choice for fuel system components.
For oil and fuel seals, see our FKM machining page.
Browse our full range of machined engineering plastics and elastomers here.