FKM

Clear glass beaker of naphtha with a black O-Ring falling into the liquid

Naphtha O-Ring Compatibility: Which Compounds Hold Up

Naphtha (petroleum solvent) O-Ring guide: which elastomers swell or fail, why FKM and nitrile usually win, and how to read the chemical compatibility chart for VM&P and solvent naphtha.

Viton® / FKM (Fluoroelastomer) O-Rings

Viton® / FKM O-Ring guide: heat to +400°F, fuel and chemical resistance, the honest low-temperature story, cure systems, fluorine content, durometers, mil-spec, FDA, and every FKM grade we stock.

Viton® Extreme ETP O-Rings

Viton® Extreme ETP O-Ring guide: the specialty FKM that survives bases, amines, ketones, and esters. Temperature range, limitations, grades, and where it beats FKM and undercuts FFKM.