Part# 01-42145
MFR Model# PH3660
DescriptionQuantityPot LifePart Number
PH3660 HardenerQuart1 Hour01-42145


PR2032 is a medium viscosity, unfilled, light amber laminating resin that is designed for structural production applications. Three hardeners are available for use with PR2032. PH3660, has a 1-hour pot life. When used with either of these hardeners, the system gives excellent wet-out of fiberglass, carbon and aramid fibers. Special additives have been incorporated into this system to promote chemical adhesion to fabrics made with these fibers.

The AEROPOXY systems will cure completely at room temperature, or can be given an elevated temperature cure. AEROPOXY contains no MDA (a known liver toxin and carcinogen) and meets or exceeds current OSHA requirements for safe use. It satisfies all structural, pot life and wet-out characteristics according to tests by Rutan Aircraft Factory, and RAF recommended its use for all homebuilt aircraft applications.

The best ratio on AEROPOXY is 100:27 by weight or 3 to 1 by volume. In early 1996 several improvements were made to AEROPOXY. The viscosity was lowered for easier laminating, the occasional slight surface tackiness in high humidity was eliminated, the AEROPOXY hardeners were modified to prevent any tendency to crystallize in high humidity, and the mix ratios were modified to an exact 3 to 1 by volume.
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm -

  • Frequently Purchased With
  • Customers Also Viewed


So far so good. I used it for the first time recently and it has met every expectation. Viscosity is low so it spreads similar to house paint, perhaps a tad thinner (at temperature of about 65 degrees). Probably would run thinner at higher temps. Unfortunately, it is fall here and my workshop stays cool (55-60 degrees F) so it has been over 35 hours and it is still slightly tacky. My only complaint is the containers, and getting the stuff out into a measure cup. It gets messy because it’s hard to pour without spilling. Anyone know it there is a pour spout for these qt cans??? That would help. Otherwise, 5 stars.

November 25, 2023

Im coming to love AeroPoxy. Im building a Cozy with MGS epoxy for the structure and West epoxy for finishing and non-structural odd jobs. I decided to do the wheel pants in AeroPoxy and got great performance. The product penetrates well, making for good layups, and cures nice and hard. Where cured West layups will still delaminate, the AeroPoxy locks on. The gallon kit is affordable and ACS brought it to Sun-N-Fun for free.

April 21, 2021

Order was shipped quick and packaging was great

Gerhard S
January 12, 2021

This Product should be kept fresh for the Consumer, It had settled out, and needed to be stirred

Byron S
November 1, 2019

This is the greatest laminating epoxy. I use it for its high temperature capabilities.

September 23, 2019

My favorite laminating epoxy. Excellent wetout properties, great pot life and I have never had an exotherm, even with very thick layups.

Shirl D
December 7, 2018

Quality resin and low odor.

John J
May 28, 2017

I use this epoxy and use a Harbor Freight scale to measure out the ratio by weight. I am not experienced at composite, and have not had any failures using this. But at 50F it takes a long time to cure....week? It did cure though!! A system that uses pumps has waste. With s small digital scale I can measure our 5 grams, or 50g. If you choose to use a pump measuring system you lack that versatility, and will increase your cost due to waste. I only gave it 4 stars because I dont have much experience with other types. I have used West System and also like it.

Brooks C
August 7, 2020

No pumps screw onto the port. They expect you to attach a spout and heave this thing on its side to have a controlled pour. Not spigot a spout. That was the recommendation from the manufacturer.

November 14, 2020


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: The pot life is 60 minutes, what is the cure time?

24hr, at room temp, is recommended. Heat can be applied to accelerate the cure time. Please see the Tech Data Sheet under the "Documents" tab for more info.

Q: Do these cans come with pumps or do I need to purchase them separately? If purchase separately, will West Systems pumps that you sell work?

They do not come with pumps but you can use the west system pumps on the Aeropoxy kit. P/N# 01-00318.

Q: How do clean this AEROPOXY up (tools and surfaces)? What solvent do I use?

Acetone is commonly used for cleaning un-cured epoxies. We also have Replacetone, 01-08823, which is a non-haz cleaner for un-cured epoxies.

Q: Can the hardeners be mixed prior to mixing with resin to achieve different pot life and cure times?

As long as the hardeners have the same ratio they can be blended. 3630/3660/3665 are all 100:27.

Q: Is Aeropoxy safe to use over closed-cell polystyrene foam?

Yes, this is safe to use with closed-cell polystyrene foam.

View in Catalog

View Image View in Catalog