A basic factory cap does the job, but it doesn't give you much extra protection. Upgrade to an aluminum Hydro-Shield cap that seals out water and grit, while the clear lens lets you check lubricant before the next haul.
A standard oil bath or grease cap closes off the hub, but this Hydro-Shield cap gives you more protection and easier access for maintenance. Its aluminum construction, waterproof sealing system, clear viewing window, and side service port make it a substantial upgrade when you want more from the cap already on your axle.
Replaces the oil bath/grease cap, O-ring, and plug on these axles:
Cap is a replacement for these Lippert, Dexter, or Valcrum oil caps:
Water and road grit can work their way past a basic cap and contaminate the lubricant around your bearings. The O-ring, gasket, precision threading, and Hydro-Shield vent plug create a waterproof barrier around the hub. The red button in the vent plug works as a check valve, releasing built-up pressure while keeping water from entering through the vent. That extra protection matters when your trailer sees heavy rain, muddy job sites, road spray, or repeated trips to the boat ramp.
The crystal-clear window gives you a direct view of your oil or grease level, so a quick look can become part of your normal trailer inspection. During maintenance, the magnetic plug also gives you another useful checkpoint by collecting metal particles that can indicate unusual bearing or axle wear.
You don't have to remove the entire cap just to service the lubricant. The side access port gives you a direct place to add or drain oil or grease, reducing the amount of disassembly during routine maintenance and leaving the cap and its seals in place.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hi everyone, Steven here with etrailer. Let's take a look at our Valcrum HydroShield Waterproof. It's an aluminum oil or grease cap for 10,000 to 16,000-pound axles. So folks, if you've ever been out there and you wonder when it's time to check your oil or grease, you gotta take the cap off, you gotta do all this maintenance. Sometimes it's very tedious and tiresome. With this, you can eliminate a lot of that 'cause you now have a clear viewing cap to then see inside and see what everything's looking like.
So this is a complete waterproof protective cap. You get a tight O-ring, gasket, and precision threading here. This is a four-inch diameter thread. This locks out water and road grime, while the red button here in the center lets you vent and acts as a check valve. So it vents out built-up pressure and it's also gonna keep water from ever getting in.
So this is a direct fit replacement for some factory oil bath or grease caps and everything for select axles. And I'll fill them up on the screen for you. And what I like, besides the fact that you can visibly see in there and that the some nice anodized aluminum construction is you have this fill or drain plug here. And what's nice about that is it has a built-in magnet on it. So now any little metal shavings or particles are gonna get attached to that magnet.
And then, you can simply pull that out and wipe them off easily. And that's gonna prevent potential breakdowns by keeping those little particles out of your bearings and inside those seals and everything. So again, a great option for you if you're replacing one or you just wanna upgrade to something that's gonna last a lot longer and potentially save you some time on your maintenance checks and everything. Now here at etrailer, we do recommend you check everything at least once a year, even if you're not using that trailer too often. It's always a good idea to check your seals, check the oil or the grease, depending on what kind of, you know, lubrication you have in your setup on your axle.
As always, folks, if you have questions about this or anything related to trailer stuff, reach out to us. We're more than happy to assist you in any way we can. I'm Steven, thanks for watching and have a great day.
Ratings & Reviews
I cannot rate the product but shipping met my expectations.
I'm am looking forward to see if they work as advertised. I tow a 40'boat all the time and have had nothing but bearing problems. Water has been getting into the bearings rusting and destroying them. Staff was a great help as well.
fast shipping great product
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