710XX260 71260 Hylomar Compound Blue Medium Sealant - 250 ml Brush-Top Can

Hylomar is good stuff. I use it to seal 9" third member gaskets and drive flanges on stock cars. Pricey stuff but its really good.

didn’t seal my oil sump.

I don't know if the product stayed on the shelf too long but when I got ready to use the product it had dried up and was so thick that I couldn't use it because it was too thick, I didn't see any instructions on how to thin it down, plus the brush inside broke off from the cap, this may be a good product but it sure didn't work out for me.

This is not medium grade as the title suggests, it's actually light grade. (or at least it says "Hylomar L" on it. I'll post a picture of the actual can I received.The can also arrived dented.it's also non-returnable:"For safety reasons, items that are classified as hazardous materials or use flammable liquids or gases cannot be returned to Amazon.com."according to the spec sheet it's not flammable... (Hylomar M is)

There really is no substitute for Blue Hylomar. Add a little to a gasket or metal to metal connection to be assured of a perfect seal.

old stock

I've been using this sealant for over 20 years. Really high quality. A bit expensive but well worth it. The store shipped it out immediately and it arrived well packaged!

Excellent delivery and outstanding product. I'll have to buy more of it. Worked great on my copper head gaskets for a nitrous motor.