Maybe you have have been told that the lubricant you are considering is ‘plastic safe’…. We would always recommend that a device manufacturer carries out a compatibility test, even if advised that a lubricant will have not problems with their plastic or rubber, why? Much of the raw materials for the plastic that is used in production is sourced far and wide; consider a scenario where you are producing a device in large volumes or for many years, the material in your device exhibits no compatibility problems with a grease used inside but three years later there becomes a problem. Arranging for a compatibility report for the grease and plastic used in your device at ‘day one’ ensures that you know something has changed….be that your plastics supplier has started sourcing raw material from a different source without notifying you or your grease supplier has changed the formula of the lubricant without informing you. A reputable lubricant manufacturer would NEVER change the formulation of a lubricant and keep the original product name without telling customers.