There are very few adhesives or sealants that stick to polyethylene.
What sealant will stick to polyethylene.
It would take a lot of cleaning probably to get a good enough surface for the tape to stick.
Silicone holds up when exposed to water or high humidity and is a good insulator.
Polyethylene is a lightweight thermoplastic.
According to the ridout plastics company such chemically.
Polyethylene or polypropylene plastics.
But the good news is that other resins will not stick to it which is allows it to be a good molding material.
It is often abbreviated to ldpe low density polyethylene or hdpe high density polyethylene.
These plastics are designed to take a beating and are generally chemically resistant.
If you don t use a rubber to rubber mold release the silicone will stick to itself creating a large block of silicone.
Recommended for permanent bonding because of its enormous adhesive strength of about 700psi polyurethane is more of an adhesive than a sealant it is good for hull deck joints and bonding thru hull fittings but incompatible with abs and lexan and does not adhere well to many other types of plastic.
Fast curing general all purpose moisture cure polyurethane sealant and adhesive.
General all purpose polyurethane sealant and adhesive designed for long open time jobs.
But first a little background on plastics and in particular polyolefin plastics.
Light duty general marine sealant applications where fast cure time is important.
The exception to this is if you pour more silicone.
Excellent adhesion to gelcoat fiberglass metal and wood.
Sealing and bonding polypropylene and polyethylene by jeff lucius introduction this short note briefly presents a relatively new product around the year 2000 for bonding polypropylene and polyethylene 3m s scotch weld tm structural plastic adhesive dp 8005.
When you re finished scrubbing hose off the plastic to get rid of any remaining soap.
Best caulk sealant for polyethylene duraskrim crawlspace encapsulation.
If the duraskrim only comes up partway on the brick walls i think you should be fine with your plan to use wood battens tapcon screws and sikaflex 1a.
Bonding polyethylene is considered very difficult and as a result it is often used as packaging for adhesive materials as the glue won t stick to it.
If you can tolerate a permenant attachment look at 3m dp 8500 although i m not sure about its resistance to gas and oil.
Starting with a clean plastic surface enables the paint to better stick to the material without bumps bubbling or peeling.
If you need a removable repairable attachment i doubt that you ll find anything suitable.
Another vote for a gasket or o ring mechanical seal.
However silicone caulk cannot be painted and silicone can attract dirt if used on an exposed surface.
Silicone caulk dries quickly and is a top choice for creating a seal between plastic surfaces.
