Our office will be closed from Friday, December 23, 2016 through Monday, January 2, 2017 so our staff may celebrate the holidays. We will not be accepting nor shipping new orders during that time.

Please be sure to place any Microseal orders NO LATER THAN 5:00pm EST on WEDNESDAY December 21, 2016 so we will have time to fulfill and ship your product prior to our holiday break.

We will reopen Tuesday, January 3, 2017 for new orders.

Thank you for your continued patronage. May you and yours have a wonderful holiday and a prosperous New Year!


MICROSEAL offers an easy, economic, one-step solution for sealing porous castings, welds, coatings and leaky joints. It also secures loose screws and nuts and prevents rust. Works great for boats with leaky water tanks too!

Microseal is a plastic in thin liquid form with unusually high capillary action. It fills fine pores, micro-cracks and joints between fitting parts, then hardens into a pressure-tight seal.Application is easy; just dip, brush or spray. The seal dries in about a minute and hardens at room temperature. Large castings can be spot sealed.

Our product line includes Microseal-AC, Microseal-MEK, and Miniseal in 1-gallon and 5-gallon sizes. We accept most credit cards and ship within the United States and internationally to Canada, Mexico, and Asia.*

Place your order today!

  • Minimizes leaking, porous rejects.
  • Inexpensive — a little sealant goes a long way and it’s easily applied.
  • Allows for less expensive foundry and manufacturing techniques.
  • Eliminates the need for pressure testing.
Have a leaky boat tank? Keep the water on the inside of that tank! Use Microseal to seal it!boat