Marine Adhesive Sealant 4000 UV, 10 oz White — Semi-Permanent Watertight Bond Above & Below Waterline, UV Resistant Marine Caulk for Boats, Decks, Hatches & Fittings by Berkland, Compare to 4200

Used to secure new wall panel in a boat locker. Works as designed. Easy to apply with caulk gun and after 24 hours it’s setting up and holding firm. Cleanup up is typical, paint thinner or stronger. No idea on longevity, but it appears to work properly. A huge savings over big brands. It does seem smoother or thinner than big brands but works well and is easier to use. I will purchase again on my next project.

Good stuff. Worked well on the boat, and it adheres to silicone which is a plus. Has held up well in my last couple outings on the boat, so no complaints on water resistance.

I used the 3m version of this that has started to crack after 2/3 years on my boat. After one use I am impressed with this, it applies smoother than 3m and has held up better over the past 3 months than the brand name stuff did. Much better value and it seals well. I will update this after a year or two.

As described

I have used this stuff for everything on my RV build. I even used it to melt a plastic block to my boat transom to melt my transducer. Highly recommended.

Very hard to get it to flow out of the tube

I used this to sandwich two pieces of plexi glass to my forward portal on my boat because it cracked and a new portal is thousands of dollars. So I cut two pieces of glass, sandwiched the portal, and then I sealed the edges with this cement. Voila! No more leaks and cost me a smidge of what a new one would cost. It dried pretty quick and was easy to use. Functions as it should!

I am very pleased with this. Works great and the removable nozzle is easy to clean out the hardened material. I have used it sporadically over the past two months without the tube hardening. Impossible to do with 5200.