This sealing material is excellent. Very tacky and hard to get "just like that", but if you're not looking for an aesthetic look, who cares, right? I have used this to patch a few wire holes on my bike after changing a tail light and it works great. It will not peel, crack, tear, etc. and is completely waterproof. And the black color harmonises with the plastic!
๐ด Permatex 81160 High-Temp Red RTV Silicone Gasket: Reliable 3 oz Solution
9 Review
POR-15 Patch - 4 oz White Filler & Seam Sealer for Steel, ๐ง Wood, and Plastics - Ultimate Adhesive to Strengthen Weakened Metal and Patch Holes and Cracks
12 Review
Permatex 82180 Maximum Resistance Silicone
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Black POR-15 Patch - 4 oz Filler & Seam Sealer with Ultimate Adhesive Properties - Repairs Holes, Cracks in Steel, Wood, and select Plastics - Reinforces Weakened Metal
12 Review