RACOONA 2PCS Gas Can Cap,Gas Can Vent Caps,Car Accessories Gas Can Cap Replacement,Gas Can Screw On Vent Cap to Prevent Fuel Leakage,Rear Vent Screw Caps Vent Cap Fits Most Fuel Diesel Kerosene Jugs

A good vent cap shouldn’t be the reason a perfectly serviceable gas can ends up in the trash. That was the situation on my bench: a couple of older plastic cans with brittle, broken vents that turned pouring into a messy, glugging affair. I picked up the RACOONA vent caps as a simple replacement, hoping to restore smooth flow and seal things back up during transport. After several weeks of use across multiple cans, I have a solid sense of where these caps shine—and where you need to check your fit before buying.

What it is and why it matters

These are screw-on vent caps designed for cans with an existing rear vent opening of roughly 11/16 inch. Each cap arrives with a rubber gasket and a thickened sealing surface. The promise is straightforward: re-enable controlled venting while pouring, close things up securely for storage and transport, and keep grit and moisture out.

For older cans—especially those manufactured before spouts were reengineered for safety—these little vents make a big difference. Opening the vent during a pour reduces the vacuum in the can, which means a steady stream instead of the stop-start “glug” that leads to spills. Close the vent back up, and you minimize fumes and leaks in the truck bed or shed.

Setup and fit

Installation is tool-free. I cleaned the vent openings with a brush, wiped the threads, seated the gaskets in the new caps, and hand-tightened them. On my 5-gallon Gott can and a 1.5-gallon Gott, the threads engaged easily and tightened down with a positive stop. On a generic red 5-gallon plastic can with a threaded 11/16-inch rear vent, the fit was similarly clean.

Two important notes from my testing:

• Thread pattern matters. On an LC2-style jug I use for small engines, the cap would start but wouldn’t engage properly—the thread pitch simply didn’t match. No amount of “gentle persuasion” would coax it to seat correctly, and forcing it would have cross-threaded the port.
• Not every “11/16-inch opening” is actually 11/16 or even threaded the same way. On one older can, the opening diameter was close but off just enough that the cap wouldn’t start. Measuring with calipers is a good move if you have any doubt.

If your can uses a smooth push-in style vent or has a nonstandard thread, this cap won’t be the right solution. If you’ve got a true threaded port around 11/16 inch with a common pitch, you’re probably in business.

Pouring performance

The difference with a functioning vent is immediate. With the vent cracked open a quarter turn, my 5-gallon can poured steadily into a mower tank with no hiccups. Close the vent and the flow slows the way you’d expect, but the cap’s seal keeps liquid where it belongs. I ran a few slosh tests—filling the can to about three-quarters with dyed water and tipping it around in the bed of my truck. No weeping at the vent, even when the cap was hand-tight and not torqued down aggressively.

I also tried a “worst-case” pour: transferring a nearly full can into another container without opening the vent. The glugging started immediately. Opening the RACOONA vent cap half a turn smoothed the flow within a second. It’s exactly the behavior you want from a vent: easy to open and close, and responsive to small adjustments.

Sealing and leak resistance

The rubber gasket is slightly thicker than many stock vent seals I’ve dealt with. That’s good news for older cans with threads that aren’t perfect. On my slightly worn Gott, the gasket compressed evenly and created a tight seal with just hand pressure. I left a filled can on its side for an hour as a stress test. The spout weeped a bit (common on that can), but the vent cap stayed dry.

I also paid attention to fumes in storage. With the vents closed, I didn’t notice any increased odor in my shed compared to factory vents. That’s a qualitative observation, of course, but it suggests the gasket is doing its job.

Materials and durability

The cap itself feels like a rigid, fuel-resistant polymer with a lightly textured surface that’s easy to grip even with gloves. The gaskets have remained supple through contact with gasoline and diesel; I checked them after several fills and didn’t see swelling or cracking. Time will tell on long-term UV exposure, but the low-profile design and dense material give me more confidence than the brittle, thin-walled caps that originally came on my cans.

One small design plus: the shoulder of the cap is wide enough that it distributes pressure over a larger area of the can’s vent boss, which helps with sealing and reduces the temptation to overtighten.

Compatibility caveats

These caps are not universal. Before you hit purchase, consider:

• Thread pitch: Some jugs (especially certain utility jugs) use a different pitch. If the cap doesn’t start cleanly and smoothly, don’t force it.
• Opening diameter: The target is roughly 11/16 inch. If your vent port is significantly larger or smaller, you’ll need a different solution.
• Threaded vs. push-in vents: These caps are for threaded vents only.

If you have LC2-style jugs or similar, expect a mismatch. If you have an older Gott or many common plastic cans with threaded rear vents, the odds are better. When in doubt, measure the inside diameter and compare to 11/16 inch, and check the existing cap’s thread pitch visually or with a thread gauge.

Everyday use

Over several weeks, here’s what stood out:

• Easy operation: Quarter-turn to open for venting, quick close to seal. The grip pattern is forgiving with oily gloves.
• No tools required: Install once and forget.
• Keeps debris out: The closed cap provides a firm barrier against dust and rain, which matters if your cans live in a garage or shed.
• Two-pack convenience: I immediately put both caps to work—one on gasoline, one on diesel—so having a pair made sense.

I did mark mine with a paint pen (GAS/DIESEL) to avoid mix-ups. The black color looks clean but can be hard to differentiate at a glance if you run multiple cans.

Value

Replacing the entire can is wasteful if the container is otherwise sound. A two-pack of vent caps at this price is a cheap fix that restores usability. Considering the tight seal and the thicker gasket, the value proposition is strong. The only way you lose here is if compatibility bites you—hence the emphasis on measuring and thread match.

Tips for success

• Check threads before installing. Start the cap gently; it should engage smoothly. If you feel resistance right away, back off.
• Clean the vent port. Grit in the threads will compromise the seal.
• Don’t overtighten. The gasket does the sealing; cranking hard can deform plastic threads over time.
• Test with water first. If you’re unsure about sealing, a quick slosh test with water saves wasted fuel and mess.

Who it’s for

• Owners of older plastic gas cans with cracked or missing vent caps
• Anyone frustrated by glugging pours from a can with a functional threaded vent port
• DIYers who want to keep existing cans in service rather than buying new

Who should look elsewhere:

• Users with non-threaded or nonstandard vent openings
• Owners of jugs with mismatched thread pitch (e.g., certain utility/LC2-style containers)

The bottom line

The RACOONA vent caps did exactly what I needed: they revived a couple of aging cans, restored smooth pouring, and sealed tightly in transit. The build feels solid, the gasket is generous, and day-to-day operation is simple. The only real gotcha is compatibility—these aren’t a magic, one-size-fits-all answer. If your cans match the intended 11/16-inch threaded ports, you’ll likely have the same experience I did: quick install, clean seal, and fewer spills.

Recommendation: I recommend these vent caps for anyone with standard threaded 11/16-inch vent openings looking to bring older cans back to life. Measure first and confirm your thread pitch; if it’s a match, this is a low-cost, high-impact upgrade that pays for itself the first time you pour without a mess.