By the RV Geeks
See video below for demonstration
RV slide-out rooms have both inner and outer seals (We also refer to them as gaskets, but seals is probably the more accurate word). They keep the slides sealed against the elements whether they are extended or retracted. Keeping them working smoothly is a quick and easy once-a-year maintenance item... probably the simplest task on our annual spring cleaning list.
Although there are commercial products available for lubricating slideout seals, when we picked up our new motorhome from Newmar, they recommended that we simply rub them with baby powder / talcum powder once a year, and nothing else would be required. This has worked well for us over the seven years we've owned our RV, and avoids the cost of commercial products. Another benefit of baby powder is that it doesn't attract dust and dirt the way many liquid products can.
Our slide-out room seals look pretty much brand new, even after nearly seven years of full-timing. If your manufacturer recommends some other method, by all means follow their recommendation, but we're pleased with this method and highly recommend giving it a try.
Be sure to confirm that all methods and materials used are compatible with your particular recreational vehicle. Every type of motorhome, motorcoach, fifth wheel, travel trailer, bus conversion, camper and toy hauler is different, so your systems may not be the same as ours.
RV Geeks offers basic DIY (do it yourself) RV service, repair and maintenance tips from full-time RVers who have been handling most of their own maintenance since hitting the road in 2003.