Packable, self-contained, and ready for roadside use—the 4oz Endurance ships with Orange Seal's Twist Lock Injection System built into the cap, eliminating the need for a separate syringe or injector kit. Remove your valve core, thread the hose onto the valve stem, twist the cap open, and squeeze. The compact bottle fits in a saddlebag or jersey pocket for mid-ride top-offs or emergency sealant replacement when you discover dried-out tires at a trailhead parking lot.

The Endurance formula extends service life to 60-120 days compared to the 30-45 day interval of Orange Seal's regular sealant. The extended longevity comes from a modified latex compound with higher concentrations of nanite particles that stay suspended longer as the liquid base gradually thickens. Temperature tolerance reaches down to 0°F, handling cold-weather riding conditions where standard formulas begin to struggle. The tradeoff for extended service life is a slightly reduced puncture window: holes up to 1/8" and slices up to 1/2", versus the regular formula's 1/4" capacity.

4 ounces covers a single 29er tire, a pair of road tires, or serves as a mid-season refresh on an existing setup. Orange Seal recommends 1-2oz for road tires up to 28mm, 3oz for 27.5" mountain tires, 4oz for 29ers, and 6-8oz for plus or fat tires. The premium latex coats the entire tire casing from bead to tread cap, building a protective film layer that adds secondary puncture resistance as the sealant cures over time.... Read More