Repairing plastic tanks, bathroom fixtures and other trim requires the right compounds. West Systems is a well-respected marine epoxy brand and their Plastic Boat Repair Kit is specifically designed for durable repairs on a number of specialized plastics used in the boating and recreational vehicle industries.
If the repair you are doing is on polyethylene (HDPE or LDPE), ABS, PVC or Lexan (polycarbonate) plastic, this contents of this kit will work.
The Plastic Repair Kit features plastic-friendly West Systems G/flex 655 epoxy, and the components are packaged with the do-it-yourselfer in mind. Each kit contains 8.4 ounces of pre-thickened epoxy, protective gloves, mixing pallets and mixing sticks.
Illustrated, detailed instructions explain how to repair splits and cracks in plastic, attach or repair reinforcement points, and even repair pinhole leaks in inflatable items.
All components are contained in a sturdy, resealable package so you can do some work on your vintage trailer and then keep the remaining items to work on household items.
In addition to the materials in the kit, you will need a propane torch, a sabre or hack saw, scraper or chisel, clamps, 80-grit sand paper, 2"-wide packaging tape, plastic spreader, paper towels, plastic-compatible paint (if desired for blending the finish color) and laquer thinner or acetone for cleanup (as necessary).