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
I have used this product several times over the last 20 yrs. Easy to use, sand easily and it holds well.
POLY-FIBER SUPERFIL EPOXY A&B
Ive used epoxy and micro balloons for a long time. I tried a quart of Super Fil several years ago and its so much easier to use. Stays where you put it, doesnt sag. The hardener does separate and needs to be mixed once in a while. This is my second quart that I use on model airplanes exclusively.
Great product fast delivery couldn’t be more pleased. Thank you
Fair price, easy to work with, very durable.
Very easy to work with. Lightweight and dries hard. Its aircraft bondo
Used this to simulate the windshield gasket on a Stinson SR-9. Works very well and very easy to sand. Should be great on fillets. Much easier to sand and manipulate than epoxy and micro balloons. A bit hard to measure out, so using a scale would be the best way to do that. Would be nice for modelers if it were sold in smaller portions.
A great product and very good service.
great, easy to use product
Product worked just as described.
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.
We have added the MSDS sheet to the "Documents" tab of this web page. Please review it there.
Yes. It is an epoxy base filler and adheres very well to aluminum, wood, and composites.
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.
This is an epoxy base filler and adheres to many surfaces, but a slightly abraded surface is recommended for the best bond.
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.
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.
It is not normally used as an adhesive, so we have no data as to how well it will work.
This material has a 2 year shelf life in an un-opened container.
It should go underneath the varnish. The varnish should seal the superfil.
Per Poly-Fiber: We do not recommend thinning or diluting this product.