Apple Watch & Hot Water

Hello! I purchased an Apple Watch 4 recently and it's my first ever Apple Watch. Loving it so far. I am quite a thorough hand washer and I tend to have the water quite hot (maybe 104F+ or 40C+ here in the UK); the water has splashed up onto the watch a few times and it has only just occurred to me that hot water could potentially damage the rubber water resistant seals on the watch. Should I be concerned if water that was 40 celsius+ merely splashed onto the watch, or is it only a problem if the watch is in a prolonged stream of water at that temperature? Would the rubber seals warp straight away at that temperature? I am just wondering if the watch is compromised already.