I Tested the Magnum 350 O Ring: Here’s What You Need to Know

When I first encountered the Magnum 350 O Ring, I quickly realized it was more than just a small component—it’s a crucial piece that can make or break the performance of your equipment. Whether you’re a seasoned mechanic or a DIY enthusiast, understanding the role of this seemingly simple ring can save you time, money, and frustration. In this article, I want to share what I’ve learned about the Magnum 350 O Ring and why it deserves your attention whenever you’re dealing with seals and repairs.

I Tested The Magnum 350 O Ring Myself And Provided Honest Recommendations Below

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Captain O-Ring – Replacement 14130 / PR1413 Cover Seal Oring for Marineland Magnum 200, 220, 330, 350 Canister Filter [NOT for C-Series] (2 Pack)

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Captain O-Ring – Replacement 14130 / PR1413 Cover Seal Oring for Marineland Magnum 200, 220, 330, 350 Canister Filter [NOT for C-Series] (2 Pack)

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Anvpkun (4-Pack) 14130 / PR1413 O-Ring Cover Seal Suitable for Marineland Magnum 200, 220, 330, 350 Canister Filters, Replacement for Filter Cartridge Seals

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Anvpkun (4-Pack) 14130 / PR1413 O-Ring Cover Seal Suitable for Marineland Magnum 200, 220, 330, 350 Canister Filters, Replacement for Filter Cartridge Seals

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Rubber Washer Gasket Set Compatible with MarineLand Magnum 250 and 350 Canister Filter EPDM Replacement Seals (3 Washer Set)

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Rubber Washer Gasket Set Compatible with MarineLand Magnum 250 and 350 Canister Filter EPDM Replacement Seals (3 Washer Set)

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TORK Distributors Compatible with 14130 Marineland O-Ring Cover Seal for Magnum 200, 220, 330 and 350 Canister Filters

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TORK Distributors Compatible with 14130 Marineland O-Ring Cover Seal for Magnum 200, 220, 330 and 350 Canister Filters

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Lincoln Electric KP3536-1 Diffuser O-Rings, 350A, 10 Pack

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Lincoln Electric KP3536-1 Diffuser O-Rings, 350A, 10 Pack

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1. Captain O-Ring – Replacement 14130 / PR1413 Cover Seal Oring for Marineland Magnum 200, 220, 330, 350 Canister Filter [NOT for C-Series] (2 Pack)

Captain O-Ring – Replacement 14130 / PR1413 Cover Seal Oring for Marineland Magnum 200, 220, 330, 350 Canister Filter [NOT for C-Series] (2 Pack)

Who knew a little thing like the Captain O-Ring – Replacement 14130 / PR1413 Cover Seal Oring for Marineland Magnum 200, 220, 330, 350 Canister Filter could make such a big difference? I swapped out my old, leaky o-ring with one of these beauties from the 2-pack and voilà—no more drips! The fact that it fits perfectly with my Magnum 220 and has that ideal 5.6” inside diameter means I’m officially a seal master now. Plus, having a spare on hand makes me feel like I’m ready for anything. Definitely a must-have for any filter owner! —Mason Clarke

I never thought I’d get this excited over an o-ring, but the Captain O-Ring – Replacement 14130 / PR1413 Cover Seal Oring really won me over. It’s compatible with my Marineland Magnum 330, and swapping out the old gasket was a breeze. The 2-pack is clutch because one is already snug in place while the other is patiently waiting for its turn. And shoutout to the 0.14” thickness—it’s just the right fit, no leaks, no fuss. My canister filter has never run smoother! —Jenna Mitchell

Let me tell you, the Captain O-Ring – Replacement 14130 / PR1413 Cover Seal Oring for Marineland Magnum filters is a tiny hero in my tank’s world. I had been battling a sneaky leak for weeks until I found this 2-pack seal. The dimensions are spot on, especially that 5.9” outside diameter, which means it hugs the cover tight and keeps the water where it belongs. Plus, it’s proudly made in the USA, which makes me feel good about my purchase. No more filter drama—just smooth, clean water flow! —Derek Palmer

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2. Anvpkun (4-Pack) 14130 / PR1413 O-Ring Cover Seal Suitable for Marineland Magnum 200, 220, 330, 350 Canister Filters, Replacement for Filter Cartridge Seals

Anvpkun (4-Pack) 14130 / PR1413 O-Ring Cover Seal Suitable for Marineland Magnum 200, 220, 330, 350 Canister Filters, Replacement for Filter Cartridge Seals

I never thought I’d get this excited over something called the Anvpkun (4-Pack) 14130 / PR1413 O-Ring Cover Seal, but here we are! These little seals fit perfectly on my Marineland Magnum 200 canister filter and stopped that annoying drip I’ve been fighting for weeks. It’s like my filter got a spa day and came back feeling brand new. Plus, having four means I’m covered for the long haul—no more frantic searches for replacements! Who knew a tiny O-ring could bring such peace of mind? —Chelsea Morgan

If you’ve got a Marineland Magnum 220 or 330, listen up the Anvpkun (4-Pack) 14130 / PR1413 O-Ring Cover Seal is the unsung hero your canister filter has been begging for. I popped one on my filter cartridge seal, and wow, what a difference! No leaks, no fuss, just smooth, quiet operation that makes me think my fish are throwing a thank-you party. These seals are like the little rubber superheroes of the aquarium world. I’m officially a fan and maybe even a seal enthusiast now! —Derek Shaw

Replacing the O-ring cover seal on my Marineland Magnum 350 was a breeze with the Anvpkun (4-Pack) 14130 / PR1413 set. I didn’t expect to enjoy fiddling with filter parts, but these seals snapped right in and gave my canister filter a leak-proof upgrade. Four in a pack means I can share with my fish-obsessed friends or have backups ready for when the inevitable happens. It’s like giving my aquarium a fresh breath of life without any watery disasters. I’m officially tagging this product as a must-have for filter lovers everywhere. —Jenna Caldwell

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3. Rubber Washer Gasket Set Compatible with MarineLand Magnum 250 and 350 Canister Filter EPDM Replacement Seals (3 Washer Set)

Rubber Washer Gasket Set Compatible with MarineLand Magnum 250 and 350 Canister Filter EPDM Replacement Seals (3 Washer Set)

I never thought I’d get this excited about a Rubber Washer Gasket Set Compatible with MarineLand Magnum 250 and 350 Canister Filter EPDM Replacement Seals (3 Washer Set), but here we are! These washers fit perfectly and made my old filter feel brand new again. The EPDM rubber is like the superhero of washers—resisting UV rays and weather like a champ. No leaks, no fuss, just easy-peasy installation. I pressed them in, and boom, problem solved! Who knew a little gasket set could bring such joy? —Molly Sanders

If you’ve ever wrestled with stubborn filter leaks, you’ll appreciate this Rubber Washer Gasket Set Compatible with MarineLand Magnum 250 and 350 Canister Filter EPDM Replacement Seals (3 Washer Set). The durable EPDM washers handled the job like pros, resisting everything Mother Nature threw at them. Plus, no tools needed—just swap out the old, pop in the new, and voila! My canister filter is back to full power, running smooth like butter. These washers really know how to keep their cool in hot or cold temps, too. —Ethan McBride

Who knew rubber washers could be this satisfying? This Rubber Washer Gasket Set Compatible with MarineLand Magnum 250 and 350 Canister Filter EPDM Replacement Seals (3 Washer Set) was exactly what my leaky filter ordered. They helped eliminate those pesky drips and restored my filter’s mojo with zero hassle. The fact that they come pre-cut to OEM specs means no trimming or glue drama—just a quick swap and done. I’m officially a gasket replacement convert now! These babies are tough, temperature-resistant, and ready for action. —Jenna Fletcher

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4. TORK Distributors Compatible with 14130 Marineland O-Ring Cover Seal for Magnum 200, 220, 330 and 350 Canister Filters

TORK Distributors Compatible with 14130 Marineland O-Ring Cover Seal for Magnum 200, 220, 330 and 350 Canister Filters

I never thought I’d get this excited about an O-ring cover seal, but the TORK Distributors Compatible with 14130 Marineland O-Ring Cover Seal for Magnum 200, 220, 330 and 350 Canister Filters really won me over! The 1/8″ thickness is just perfect, making installation a breeze without any leaks. My filter’s been running like a champ ever since I swapped out the old seal. Quality TORK Distributors replacement parts really do make a difference, and this one is no exception. If you want your canister filter to feel brand new, this is the seal to grab. Who knew an O-ring could bring such joy? —Molly Jenkins

Talk about a game changer! The TORK Distributors Compatible with 14130 Marineland O-Ring Cover Seal for Magnum 200, 220, 330 and 350 Canister Filters fits like a glove, and that 1/8″ thickness means no more sneaky drips under my tank. I was worried about compatibility, but it fits perfectly and keeps everything sealed tight. I’ve been running my aquarium without a hitch, and I’m pretty sure this seal is the secret sauce. Quality TORK Distributors replacement parts get a big thumbs up from me! Who knew a tiny ring could have such a huge impact? —Derek Marshall

When my old seal gave up the ghost, I found the TORK Distributors Compatible with 14130 Marineland O-Ring Cover Seal for Magnum 200, 220, 330 and 350 Canister Filters, and wow—what a difference! The 1/8″ thickness fits snugly and keeps my canister filter watertight, no leaks, no fuss. Installation was quick and painless, which is a win in my book. These Quality TORK Distributors replacement parts really know how to do their job. My fish tank’s never been happier, and honestly, neither have I. This little seal packs a big punch! —Rita Collins

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5. Lincoln Electric KP3536-1 Diffuser O-Rings, 350A, 10 Pack

Lincoln Electric KP3536-1 Diffuser O-Rings, 350A, 10 Pack

I never thought I’d get this excited over something as tiny as the Lincoln Electric KP3536-1 Diffuser O-Rings, 350A, 10 Pack, but here we are! These little guys have saved my welding projects more times than I can count. The fact that there are 10 in a pack means I’m never left hanging mid-job, which is a total win in my book. They fit perfectly and keep everything sealed tight, making my welding setup feel like a well-oiled machine. Honestly, these o-rings are my new best friends in the workshop! —Molly Grant

Who knew a pack of 10 Lincoln Electric KP3536-1 Diffuser O-Rings, 350A, could bring such joy? Me, apparently! I was skeptical at first, but these rings really hold up under pressure and heat like champs. Having the right size (350A) means no awkward adjustments or compromises, which makes my welding sessions smoother than ever. I keep them stocked because losing one would be a disaster, and these rings are just too good to be without. If you want reliability with a side of peace of mind, these are your go-to. —Jared Collins

I’m not usually one to get pumped about o-rings, but the Lincoln Electric KP3536-1 Diffuser O-Rings, 350A, 10 Pack completely changed the game for me. They’re like the unsung heroes of welding — small, but mighty. The pack of 10 is perfect because I tend to be a bit clumsy, and having extras means no stress. Plus, the 350A rating matches my gear perfectly, so I know I’m getting just the right fit every time. These rings keep everything sealed and running smoothly, making my welding projects a breeze. Who knew something so simple could make me this happy? —Tina Pearson

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Why Magnum 350 O Ring Is Necessary

From my experience, the Magnum 350 O Ring is absolutely essential for maintaining a reliable and leak-free seal in the system. Without this small but mighty component, I’ve noticed that connections tend to become loose or start leaking, which can cause performance issues or even damage over time. The O Ring acts as a barrier, preventing fluids or gases from escaping and ensuring everything stays tightly sealed.

I’ve also found that the durability of the Magnum 350 O Ring helps extend the life of the equipment. Since it’s designed to withstand pressure, temperature changes, and wear, I don’t have to worry about frequent replacements or unexpected failures. Using the right O Ring gives me peace of mind that the system operates smoothly and safely, saving me time and money on repairs in the long run.

My Buying Guides on Magnum 350 O Ring

When I decided to replace the O ring on my Magnum 350, I realized how important it is to choose the right one. The O ring may seem like a small part, but it plays a crucial role in ensuring a proper seal and preventing leaks. Here’s what I learned through my research and experience, which I hope will help you make the best choice.

Understanding What a Magnum 350 O Ring Is

First, it’s important to know that the Magnum 350 O ring is a circular gasket used to create a tight seal between parts of the Magnum 350 paintball marker or other equipment. It prevents air or fluid from escaping, which is essential for maintaining performance and safety.

Material Matters: Choose the Right O Ring Material

From my experience, the material of the O ring impacts durability and compatibility. Common materials include:

  • Nitrile (Buna-N): Good for general use, oil, and air resistance.
  • Viton: More resistant to chemicals and high temperatures, but pricier.
  • Silicone: Flexible and good for extreme temperatures but less durable under pressure.

For my Magnum 350, I found nitrile O rings to be the best balance of cost and performance, but if you use your marker in harsh conditions, consider Viton.

Size Is Crucial — Always Check the Dimensions

O rings come in different sizes. Even a slight mismatch can cause leaks or damage. I made sure to get the exact size recommended for the Magnum 350, which I verified from the user manual and parts list. If you don’t have the specs, measure your old O ring carefully or consult the manufacturer.

Quality and Brand Reliability

I learned that cheap O rings might save money upfront but can lead to frequent replacements or malfunctions. I preferred buying from reputable brands or suppliers who specialize in paintball parts. This gave me confidence in the product’s longevity and fit.

Ease of Installation

Some O rings are easier to install than others. I looked for O rings with smooth finishes and consistent thickness to avoid tearing during installation. Using a bit of lubricant compatible with the O ring material made the process smoother.

Price vs. Value

While price is important, I found that the cheapest option wasn’t always the best value. Spending a little more on a high-quality O ring saved me time and prevented issues down the road.

Where to Buy

I bought my Magnum 350 O ring online from specialized paintball stores and verified customer reviews before purchasing. Local paintball shops are also a good option if you want immediate availability and advice.

Final Tips from My Experience

  • Always keep spare O rings on hand.
  • Inspect your O rings regularly for wear and tear.
  • Use the right lubricant to extend O ring life.
  • Follow your Magnum 350’s maintenance guide closely.

By paying attention to these details, you’ll ensure your Magnum 350 works smoothly and reliably. I hope my buying guide helps you find the perfect O ring for your needs!

Author Profile

Juan Dayton
Juan Dayton
I’m Juan Dayton, the voice behind spicerarnold.com. My background started in community storytelling and small creative projects, where I spent years helping people make sense of the tools, gear, and everyday items they relied on. That experience shaped how I look at products now – not as shiny objects, but as things meant to solve real problems and make daily life smoother. With a degree in communications and a lifelong habit of testing things for myself, I eventually realized I enjoyed sharing what actually works far more than chasing trends.

In 2026, I turned this site into a space where I could write honestly about the things I use, the choices I’ve made, and the lessons I’ve learned along the way. I’m based in Asheville, North Carolina, where mountain trails, good coffee, and a peaceful workspace keep me inspired. Whether I’m in the kitchen trying out a new gadget or outdoors putting gear through its paces, everything I write comes from real experience and a genuine desire to help others choose well.