Arjay 7121 High Strength Vinyl Ester Compound – 5 GL

Arjay 7121 High Strength Vinyl Ester


Are you planning on bonding your deck to your hull? Do you need to bond your stringers to your hull? You’re going to need Superior bonding for those critical structure bonds, and that’s exactly what Arjay 7121 is meant for.


47 in stock

High Strength Vinyl Ester Compound


Best known for its performance in critical bonding applications, Arjay’s Vinylester has become a strong, multi-purpose leader. Arjay’s vinylester 7121 is specially formulated for superior physical properties when compared to polyester resins. This has made it the ideal choice for many marine applications where the bonds are structurally critical.

Arjay 7121 High Strength Vinyl Ester Compound Benefits:

  1. Easy to mix, apply, and use
  2. Superior strength great for critical bonds
  3. Our most versatile compound
  4. Requires MEK-P Catalyst (is not included). We recommend buying our 1 Quart MEK-P and then following the mixing directions.

PLEASE NOTE: This information is provided in good faith and correct to the best of our knowledge. No warranty, guarantee, or representation is made as to the sufficiency of the information for the safe use of the product, nor to relieve the end user of any Federal, State, or Local regulatory responsibility.


  1. Charlie Norris

    “I love fiberglass coatings. They have great products and excellent advice. I'm trying to open a boat repair shop in St . Mary's, GA and my supply WILL come from fiberglass coatings. When I lived in the Fl. Keys for 36 years and worked for a towing and salvage Co for 15 years all our supplies came from Fiberglass coatings. Great service and never were disappointed. Keep up the great job everyone.”
  2. Brian Lewis

    “The staff are very knowledgeable and friendly Have always gotten the right stuff for the right job. Pat,mark,Colby,Ryan your the best. Pat is the walking encyclopedia of FGCI.”
  3. Justin Lammers

    “Been working on a skiff project and using all FGCI products. They came highly recommended by my friends who are boat builders. It is the highest quality resins, glass, and gelcoat for the money. They made it really easy for a newer person to boat building. The customer service is phenomenal and they are always knowledgeable and ready to help with any questions I had.”