Furick Teflon insulator fits #17, #18 & #26 non-CK TIG torches High-temp Teflon resists heat, spatter & wear Low-friction design improves gas flow & arc stability Quick drop-in replacement for non-CK torch cups Not compatible with CK brand torches Teflon insulator for use with non-CK brand #17, #18, and #26 torches. Will not fit on CK brand torches.