Search 1/8″ extension hose for oil pressure testers or sensor – is there such a thing?

Love All, since grey time I look out for an oil-resistant hose with 1/8″ AG and 1/8″ IG. So a classic extension in flexible, oil-resistant and pressure-resistant. For oil pressure remote measurement. In brass, however, this is available as a hose, so flexible? Alternatively : Are there oil pressure testers with hoses without quick coupling? So easy to screw? Ginge safe too. Unfortunately, I can’t get any further.. ar but also only in AG-AG.. Many greetings