Out of stock
SKU: PEX80019
UPC: 686226800190
MPN: 80019
Permatex Aviation Sealant is a slow-drying, non-hardening brush-top sealant approved for aviation and automotive use, sold here in a 4 oz. bottle. It was built for close-fitting machined surfaces, threaded connections, and solid gaskets that face vibration and fuel exposure. The same fuel-resistant chemistry that holds up on aircraft fittings makes it a working option for ammo manufacturing sealants, where shooters and reloaders seal case mouths and primer pockets against moisture and solvents. If you need a pliable, tacky film that stays workable rather than setting brittle, this is the formula reloaders reach for.
The formula cures through solvent evaporation, leaving a pliable, tacky film instead of a rigid bond, so sealed joints flex under vibration without cracking. It resists gasoline, oil, and grease, and rates for a temperature range of -65°F to 400°F (-54°C to 204°C) per manufacturer technical data. Chemical compatibility covers water, ethylene glycol, non-ethanol gasoline, motor oil, transmission fluid, and sea water, which is why it carries aviation and marine approval. The brush-top applicator built into the cap lets you lay down a controlled film on small parts without a separate tool. Note the manufacturer restriction: it is not recommended for pure oxygen or oxygen-rich systems, nor for chlorine and other strong oxidizing materials.
Reloaders use this dark reddish brown liquid to waterproof primer pockets and case mouths, sealing rounds against humidity and field conditions the same way commercial ammunition is sealed. Outside the reloading bench, it handles fuel system gaskets, machined mating surfaces, and hose connections that see heat and chemical exposure. Store unopened containers between 46 and 82°F (8 to 28°C) to keep the formula stable. Pair it with the other oils, fluids, and sealants we stock, including the non-aviation Form-A-Gasket sealant and our thread sealant for plumbing and fitting work.
Yes. Reloaders apply this non-hardening, fuel-resistant sealant to primer pockets and case mouths to waterproof rounds, similar to how factory ammunition is sealed. Its tacky, pliable film stays workable and resists oil and gasoline, which keeps moisture out without cracking under handling and vibration.
No. The formula is non-hardening. It cures through solvent evaporation into a pliable, tacky film rather than a rigid bond, so sealed joints can flex under vibration without cracking. That property is why it holds up on aircraft fittings and fuel system gaskets.
It is rated from -65°F to 400°F (-54°C to 204°C) per manufacturer technical data. That spread covers cold-weather field conditions and high-heat fuel and engine applications, making it suitable across aviation, automotive, marine, and industrial sealing work.
The manufacturer states it is not recommended for pure oxygen or oxygen-rich systems, and it should not be selected for chlorine or other strong oxidizing materials. For those chemistries, a different sealant formula is required.
The bottle has a built-in brush-top applicator in the cap, so you can lay down a controlled film on close-fitting parts, threaded connections, or solid gaskets without needing a separate brush. The 4 oz. size covers a large number of small sealing jobs.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.
