Orange Seal Endurance Sealant

Top-rated tire sealant with long-lasting formula.

Why I Like It

Orange Seal Endurance has been the most reliable sealant I’ve used — it seals quickly, holds well, and plays great with tire inserts. Its endurance formula includes particles that help plug larger punctures, and I’ve had multiple races where I finished strong without ever noticing I’d even taken a hit. After the El Paso Puzzler (1st in M30–39), I saw sealant sprayed across my frame — and somehow never flatted. That’s the kind of peace of mind I’m after.

Quick Specs

Long-lasting formula
Seals punctures fast and clean
Insert-friendly (works great with Vittoria Airliners ↗↗️
Easy to clean out when it’s time to swap tires

In My Setup

I run 6oz per tire — especially with inserts, that volume gives the best chance of sealing bigger punctures.
I refresh it before big races or after swapping tires.
During travel, I bring a small sealant injector ↗↗️ that I refill from a 32oz jug at home.
Endurance has been super consistent for me, so I always go back to it after testing other formulas.

Tips

Look for sealant spray on your frame post-ride — it’s usually a sign the sealant did its job mid-race.
Over time, you may get small clumps inside the tire (especially after it’s been hard at work), but they’re easy to remove when you’re doing a tire swap.

Who It’s For

Any MTB rider who wants a dependable, high-performance sealant that keeps working over the long haul — especially for riders using tire inserts or doing high mileage on rocky terrain.