Sikaflex-291, Adhesive and Sealant, 10.1 fl. oz Cartridge, White

I needed to add some seat retention as well as other Yak Attack accessories using their rivets. This is the ONLY thing I'd use to seal the 3/16 holes. Just make sure you put some in the hole BEFORE the rivet is inserted and after each layer before securing the rivet. It's a watertight seal. Very good stuff.

It’s great stuff works really well but I ordered 2 white tubes and had one black, one white.Doesn’t seem to be anyway to complain and receive another so $30 wasted

Wonderful, grippy, but gooey to apply - super great adhesion - but absolutely need humidity such as East or West coast, near water, Great Lakes or humid Georgia. I live in Colorado and it is still gooey on my sailboat - called the company - they said need 50-60% humidity or it won't dry. Used in my bathtub and I had to leave hot steaming water in the tube twice and it adhered perfectly. Otherwise would be 5 stars in a humid climate. 2 stars for Colorado - but it's not chemical reaction for drying - it's reactive to humidity.

The media could not be loaded.  Ordered white. Label says white. Black in tube. See video. I was 7 days past return window so I garbaged a $30 tube of caulking. Not even an option for replacement. Avoid this product at all costs. There are better out there.

Used this product to seal a freezer ice bath. Product worked phenomenal, was a fraction of the price of comparable products. Easy to use, has held up well for months with no signs of breakdown