In my car, the driver's side rubber door jamb sleeve, which covers the wires and vacuum lines going from the door to the dashboard and kick panel, was in pretty bad shape. I recently repaired the vacuum lines and in the process further mutilated the rubber cover. Jason had no mint ones on hand, but since I was placing an order from him already, he graciously included a lightly-damaged one free of charge. It was fine except for a tear along the most stressed area, the crease that folds whenever the door is opened and closed.
To repair the tear, I used my old cover as a donor and cut a strip out of it. This I glued into the back of the tear, giving it a backing that will hold it together. However, the gap in the tear was still obvious. To fill it, I used black silicone RTV gasket sealant. This dries strong and flexible, so it not only reinforced the repair, it also helped to disguise it. The result is not perfect but is a noticeable improvement. The new material is a bit more shiny than the surrounding area, but a wipe-down of the entire cover with Armour All helped equal out the appearance of the old and the new.
I suggest using this sealant as a potential repair for any tears or missing chunks in rubber covers or boots. It can even hold up to underhood temps if not touching the engine. I used Pro Seal Black RTV Silicone Instant Gasket, which has a temperature range of -75F to 500F. It also resists oil, transmission fluid, water, and anti-freeze.
That looks good. Great idea on the repair.
That's a fantastic fix and a very typical problem area! I will definitely keep that in mind as I pull in LH door rubber sleeves in the future. I'll have to check my stock and see if I have any other potential candidates. Of course the issue is the LH driver door gets opened and closed exponentially more than the right/passenger side door...... unless you just like being different and getting in from the RH side! LOL
Just went back and added this to our Help Topics page under "Door Boot Repair". I was trying to find this write-up by Tony and liked to have never found it! It will be easy to locate now! Thanks again, Tony!