Is Wd40 Bad for Rubber

WD-40 can be used on just about everything. It is safe for metal, rubber, wood and plastic. WD-40 can be applied to painted metal surfaces without harming the paint. Polycarbonate and clear polystyrene plastic are among the few surfaces on which to avoid using a petroleum-based product like WD-40.

Does WD40 swell rubber?

As Sarah points out, natural rubber, EPDM rubbers will swell if there is too much contact with WD 40 . The rubbers that will be resistant are Nitriles, Neoprenes and Hypalon. Temporarily it’s OK, but you don’t want to have something made of rubber wet with WD40 for a long period.

Is WD40 good for rubber seals?

WD-40 Specialist silicone lubricant helps keep rubber components safe. The lubricant can withstand temperature from -35°C to +200°C. The lubricant protects rubber parts from attracting dust and prevents moisture. Give the rubber seals at least an hour to settle properly and then apply the lubricant.