Options
Quantity
1 qt contains 1 qt
Login
By signing into your account, you represent that you have read and agree to our Terms and our Privacy Policy
This item is eligible for free shipping
This item will require additional time to ship
Product Details
MAS FLAG Epoxy Resin is a medium body epoxy specifically designed to be used as an adhesive and structural laminating foundation. It's thicker formula resists sagging in vertical applications. Medium viscosity works well with fillers when fairing putties, gluing slurries and filleting systems are required.
When mixed with medium hardener, FLAG is more reactive than low viscosity MAS resin. This keeps fillets and fairing compounds from slumping. FLAG resin can be sanded the next day when cured at 60 degrees F or warmer with Medium Hardener. Use with all MAS hardeners. Note: For filled applications, we recommend using MAS Medium Hardener.
We highly recommend this resin for general purpose gluing applications where wet-out of fiberglass is not a consideration, and for filleting and fairing.
Available in Quart, Half Gallon, Gallon, 4 Gallon, and larger sizes.
Info & Guides
MAS FLAG epoxy is also suitable for fast wet-out of light to medium weight fabrics, laminating, gluing, barrier coating and cold molding.
Mix Ratio: 2:1 Resin to Hardener
Resin Viscosity: 3000-3400 cps
EEW: 190-200
TG: 140 degrees F
Mixed Viscosity (2072/718) at 77 degrees F: 550-650 cps
Pot Life (30g batch) 15 minutes
Thin Film Set Time at 77 degrees F: 2 hours
Peak Exotherm: 360 degrees F
Tensile Strength: 7,500 psi
Tensile Elongation: 8 percent
Compressive Strength: 11,400 psi
- Technical Specifications
- Performance
Use protective gloves when working with this product. Use soap and water or white vinegar to clean your hands. Use Denatured Alcohol to clean your tools.
Reviews
Filter Reviews
Rating
Locale
1 to 10 of 10 Reviews
1 – 10 of 10 Reviews
Most Recent
South Carolina
5 out of 5 stars.
MAS Epoxy
a year ago
I prefer MAS epoxy to the other brand. The reason being that I can more precisely control cure times with the four different hardeners. They can be combined for even further control or to use up existing stock. I've been using MAS for many years now, and have never had a runaway heating problem, even with thicker applications. Since the ratio is 2:1, manual mixing is possible when a pump fails.
Helpful?
Crossville TN
5 out of 5 stars.
great glue
9 years ago
We are building a 25 foot shanty boat with this product. I did some glass work on my 57 beetle floor pans.
Helpful?
Maine
5 out of 5 stars.
Great Epoxy
9 years ago
Set times are very predictable...great as a glue and for sheething.
Helpful?
`Wisconsin
5 out of 5 stars.
Good Stuff
11 years ago
I use MAS for fiber glassing and for bonding urethane's for mold machining.
Helpful?
CLIFTON, IL
5 out of 5 stars.
Love this product
11 years ago
We are redoing the decks on an Alberg 35. There was quite a bit of delamination and water damage. We have cut out bad areas and reglassed. Mas is extremely easy to mix and use. We have used over 5 gal so far.
Helpful?
port townsend
5 out of 5 stars.
this is good clean fun
13 years ago
It's easier to pour in large amounts and is forgiving when your measuring isn't right on.
Helpful?
Old Town, Maine
5 out of 5 stars.
Good stuff
14 years ago
Very usable odor-free product. Good pot life and strong too. Be careful with the resin pump though -- FLAG resin is thicker, so the pump return stroke is slower. Rushing the pump may reduce the amount of resin in the mix.
Helpful?
IL
5 out of 5 stars.
Great product
15 years ago
This is a great product. We are rebuilding the deck on a Alberg 35. This product has a long working time when mixed with the slow hardner or medium hardner. It has no odor and can actually be cleaned up with white vinegar. It is sandable too.
Helpful?
Tucson Arizona
5 out of 5 stars.
Best wood repair
15 years ago
I have used MAS epoxies to build 2 wood kayaks and repair 4 sailboats. The kayak went down the Missouri River in 2003 and is still functional and beautiful today.
Helpful?
Plymouth, WI
5 out of 5 stars.
Great product, would buy again
16 years ago
Best barrier coat ever used, no extra labor to scuff and clean between coats.
Helpful?
Questions
Start typing your question and we'll check if it was already asked and answered.
1 - 5 of 5 Questions
Q: null Is Mas epoxy suitable for potable water use
a year ago1 Answer
A: This epoxy resin is not suitable for potable water use.
a year agoHelpful?
Q: null Can this product be used for thicker pours I am interested in 3"" to 4"" pours. Is it chippy to put on a lathe and turn. Clarity?
4 years ago2 Answers
A: No it can't. All epoxies are exothermic meaning they give off heat. A thick mass like you propose would kick off way too soon and just be a mess.
4 years agoHelpful?
Q: null I've been using MAS epoxy to fiberglass my cedar strip kayak. I'm looking to buy another gallon to finish it up and noticed you don't recommend it for fiberglassing. How come?
9 years ago5 Answers
A: Not at all. It is great for fiberglassing. I like the fact that it is very thin (and can be thinned more) for penetration of wood, which is what I use it for. I don't glass regularly, but MAS would be fine for it. Love the product!
9 years agoHelpful?
Q: null im repairing the deck of a sailboat and will be laying down anti-skid pads on top of the repair area. will the Anti Skid fiber backing bond to the MAS resin if I use as an adhesive?
13 years ago5 Answers
A: I have used epoxy to bond non-skid additives. Apply the epoxy and sprinkle on the grit. Paint over it. Worked better than any nonskid pad I have seen.
11 years agoHelpful?
Q: null Can I use MAS Flag Epoxy to laminate Oak frames in a large wooden boat or is it to hard and not flexible enough., and if so what type of epoxy can I use.?
12 years ago2 Answers
A: William, I have not used MAS for laminating yet sorry I can not speak dirrectly to your question. I have been sealing wood projects with it and am very pleased with the clear stable out come. The MAS I have is the medium viscousity. I suggest looking at the thicker product so that the joint is less likely be to dry. Steve, Good luck.
12 years agoHelpful?