What is the shelf life of an opened and am unopened package of this sealant?

TireJect is rated for 5+ years when stored out of direct sunlight in a garage or basement for example. This is true even after opened as long as you keep the can on tight.

Can this be injected through a presta valve?

Yes. the injector is compatible with presta and schrader valve stems.

does the gallon come with the syringe?

This gallon item is sold as a refill for those that already have a TireJect Injector. Please see TireJect Tire Sealant gallon kit that includes a 5 oz injector. See item # B072PC9D1D or B06XHTQLD8

The description says, "Prevent flat tires for up to 24 months." So what happens to it after 24 months? Are you left with a tire full of worthless goo?

You will get 24 months of flat protection for low speed tires like lawn mowers with typical use and 12 months for ATVs, after this time period you can actually just add half the original dosage amount every year after to continue flat prevention. There is no "goo", over time the tire sealant slowly building up a thin rubber film on the inside of the tire sealing punctures, bead leaks, etc and it only sticks to the rubber. This means no "goo" or sticky mess all over like other products, this is very different than your typical Slime like product.

Tire Sealant Gallon Refill | Desertcart Greece

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€ 517.56

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Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚗 Seal the deal—drive worry-free with TireJect!

ECO CONSCIOUS FORMULA - Blends recycled tire particles with liquid rubber for a sustainable edge.
ADVANCED PUNCTURE SEALING - Seals holes up to 3/8" in tread and sidewall—no more roadside panic.
EFFORTLESS DIY INSTALLATION - Includes injector and valve tools for a quick, mess-free setup in minutes.
LONG LASTING TIRE PROTECTION - Prevents flats for up to 24 months, so you stay unstoppable.
INNOVATIVE KEVLAR REINFORCEMENT - Dupont Kevlar fibers boost durability and reliability under pressure.

TireJect Tire Sealant Gallon Refill is a professional-grade tire protection solution engineered with liquid rubber, recycled tire particles, and Dupont Kevlar fibers. It permanently fixes flat tires and prevents new flats for up to 24 months by sealing punctures up to 3/8" in both tread and sidewall. Designed for easy, mess-free application, this eco-friendly formula outperforms traditional sealants, ensuring balanced tires and reliable performance for all your outdoor adventures.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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