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SUPERFIL SANDABLE NON-SHRINKING EPOXY FILLER QUART KIT

$42.50/Quart
Part# 09-28250
MFR Model# 8-EF3
DescriptionPart Number
Poly-Fiber SuperFil 1 Qt Kit
(20oz. Resin / 12oz. Hardener)
09-28250

Overview

An ultra lightweight corrosion-inhibiting filler for aircraft, marine, and automotive use. Adheres to composites, bare aluminum, steel, and bare or varnished wood.

Epoxy resin with non-MDA hardener. Ships non-hazardous. Apply EP-420 Epoxy Primer directly over SuperFil.

Superfil is an ultra-lightweight epoxy filler for rough fill and contouring. Comes in two containers. Mix, apply with a squeegee, and let dry overnight. More consistent than hand-mixed micros. Weighs only 3.8 lbs. per gallon.

1 Quart Kit (12 oz. Hardener + 20 oz. Resin)
3 Gallon Kit (1 gal. Hardener + 2 gal. Resin)

HAZARDOUS
   
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

Features

  • Composite Filling:
  • Use as you would an epoxy micro slurry. Mix by the weight for the best results. Scuff-sand smooth surfaces before application. Trowel or squeegee to desired thickness. After drying, sand to shape and finish. Works as an excellent filled material.
  • Bare Aluminum:
  • Scruff surface with a Scotch-Brite pad. Treat bare aluminum with E-2300 Conversion Coating prior to application. Apply EP-420 Primer directly over dried SuperFill.
  • Bare Steel:
  • Clean off all rust and oil, and wipe with C-2200 Meti-Sol.
  • Varnished or Bare Wood:
  • Scuff-sand and clean as necessary. EV-400 Epoxy Varnish may be applied directly over SuperFill.

Specifications

  • By Weight (preferred): 2 parts A to 1 part B
  • By Volume: 2 parts A to 1 part B.
  • Thoroughly stir each individual container of part A and part B before combining. Resin or hardener can separate from fillers during storage. After combining parts A and B scape the sides of the Revision on 21 mixing container to insure a through blend. Mix o a consistent high color blue color.
  • Cure: Allow to cure at 70 or above for best results. Lower temperatures will lengthen the cure time
  • Dry Film Cure: 8 hours at 77
  • Cure to Sand: 12 hours at 77
  • Pot Life: One hour at 77
  • Clean Up: MEK before curing occurs
  • Shelf Life: Twi years unopened. Avoid storage above 100. Resin will separate from filler during storage. Remix thoroughly.

Reviews

Great product! Unbelievable fast shipping. Always good service with Aircraft Spruce !

Richard K Verified Purchase

SUPERFIL SANDABLE NON-SHRINKING EPOXY FILLER QUART KIT

December 6, 2023

Great product, and great service.

C L Verified Purchase

SUPERFIL SANDABLE NON-SHRINKING EPOXY FILLER QUART KIT

November 17, 2023

Always a consistent product.

Robert C Verified Purchase

SUPERFIL SANDABLE NON-SHRINKING EPOXY FILLER QUART KIT

November 15, 2023

Superfil is my go to product for filler material when strength is needed. It is strong, light and sands well. Its the best filler on the market!

Allen Verified Purchase

SUPERFIL SANDABLE NON-SHRINKING EPOXY FILLER QUART KIT

November 2, 2023

This is a great filler for small gapping on irregular cuts. Takes press off exact fits on complex trim pieces such as veneer patches receiving paint. Sands easy enough to limit overworking the product at application. Get it close but not flawless. Pricy so don’t try using to fill canyons unless you just have money to burn or time sensitive on finishing.

Rick K Verified Purchase

SUPERFIL SANDABLE NON-SHRINKING EPOXY FILLER QUART KIT

October 24, 2023

Works well. Sands well until it hardens. Get it prefect.

Richard D Verified Purchase

SUPERFIL SANDABLE NON-SHRINKING EPOXY FILLER QUART KIT

October 13, 2023

Excellent filler that smooths out well when sanded

Dale B Verified Purchase

SUPERFIL SANDABLE NON-SHRINKING EPOXY FILLER QUART KIT

July 6, 2023

All seemed fine when I picked up this item at Corona store. I didnt realize there was a problem until I unpacked and opened the jars for use. I then realized the part B jar, the smaller one, had clear resin (a small amount) leaking out the cap of the jar. Apparently it had separated from the mixture while stored and the cap was not tight. It was quite a mess to clean up, but once thoroughly mixed again it works as advertised. It is certainly quicker and easier than mixing micro the traditional way.

John B Verified Purchase

SUPERFIL SANDABLE NON-SHRINKING EPOXY FILLER QUART KIT

June 23, 2023

Was previously opened and missing half of the product.

Jason K Verified Purchase

SUPERFIL SANDABLE NON-SHRINKING EPOXY FILLER QUART KIT

May 16, 2023

I am a lifelong model Airplane enthusiast. I’ve been building with Balsa and Foam and Fiberglass etc… for over 30 years. I had no idea this product existed until a Facebook group member posted about using it on a 1/7 scale P-40 Warhawk. Intrigue set in and I ordered some to try out because I’m always looking for new and different products and tools that can improve my builds. Let me just say WHERE HAS THIS STUFF BEEN ALL MY LIFE! I feel like I discovered a 2-part cheat code and everyday I find a new way that SuperFil surprises me. This is now a must have on my shelf and a lifelong relationship has been formed. A beyond excellent product that has forever changed the way I build and repair my airplanes. I give it a 20/10 and HIGHLY recommend anyone on the fence give SuperFil a chance, it will NOT disappoint!

Marco S Verified Purchase

SUPERFIL SANDABLE NON-SHRINKING EPOXY FILLER QUART KIT

February 14, 2023

Q&A

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: Can you either direct me to, or provide the MSDS for this product please? Cheers, Bruce

We have added the MSDS sheet to the "Documents" tab of this web page. Please review it there.

Q: Does Super-Fil (09-28250) work well on aluminum?

Yes. It is an epoxy base filler and adheres very well to aluminum, wood, and composites.

Q: Will Superfil crack or shrink over long time? Also, what is max depth of fill?

Superfil is an epoxy base material and will not shrink or crack over time like polyester base fillers. The manufacturer does not list a max depth.

Q: Does the filler require a chemical and / or mechanical bond?

This is an epoxy base filler and adheres to many surfaces, but a slightly abraded surface is recommended for the best bond.

Q: You mentioned an abraded surface. I have a well bonded paint, is it necessary to remove the paint and abrade the aluminum or will roughing up the paint surface be sufficient?

No, it is not necessary to remove the paint. Just be aware the Super-Fil will stick to the paint, so if the paint chips off the structure, so will the Super-Fil on it.

Q: Does SuperFil work well on sheet metal?

Yes, It will work on clean metal.

Per Vendor: It can be used as filler on metal, sure, but it should be primed over to seal it.

Q: Can Super Fil be used as a structural adhesive (like regular epoxy) to bond two pieces together?

It is not normally used as an adhesive, so we have no data as to how well it will work.

Q: What is the shelf life for 09-28250 SuperFil Part A & B?

This material has a 2 year shelf life in an un-opened container.

Q: When using in locations which will ultimately be epoxy varnished and fabric covered, should the filler go over or under the varnish?

It should go underneath the varnish. The varnish should seal the superfil.

Q: What can be used to dilute the Super Fil mix so it is not so thick?

Per Poly-Fiber: We do not recommend thinning or diluting this product.

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