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Self-sealing protection for TPU tubes — the maintenance benefit of tubeless without the rim tape, the mess, or the milkshake on your kitchen floor. Solvent-free and engineered to be compatible with TPU.
Built for TPU. Most tubeless sealants attack TPU. This one doesn't — solvent-free, fast-reacting, designed for the material.
Seals small punctures while you ride. Stay on the bike for the kind of holes that would otherwise mean stopping, taking the wheel off, and digging out a spare.
Plays nicely with TPU's natural pressure retention. TPU already loses air slowly. Sealant adds a margin of error without changing the ride feel.
Easy to inject through a removable valve core. Standard Presta workflow. Eclipse valves all have removable cores.
| Volume | 100 ml bottle |
| Composition | Solvent-free, TPU-compatible |
| Dosing rule | ml of sealant = tire width in mm (e.g. 30 mm tire → 30 ml) |
| Compatibility | All TPU inner tubes (Eclipse and other brands) |
Shake well. Get the particles distributed before you inject.
Remove the valve core. Standard Presta valve tool — included in the cap of the Eclipse sealant bottle.
Inject the recommended volume. Tire width in mm = sealant in ml. A 30 mm tire wants 30 ml.
Reinstall the core, inflate, and rotate the wheel. Spin the wheel to coat the inside of the tube before you ride.
Eclipse pioneered TPU inner tubes in 2011 — and we build the small stuff that goes with them to the same standard. Every part is selected and tested to work cleanly with TPU and with the patented all-aluminum Eclipse valve.
Thermoplastic Polyurethane (TPU) is a thermoplastic elastomer that sits between rubber and plastic — combining the elasticity of one with the processability of the other. Commercialised in the 1950s, TPU gained wide adoption in sports equipment over the past 15 years thanks to its elasticity, abrasion resistance, and durability.
TPU is known for its high elasticity, flexibility, durability, and resistance to abrasion, which makes it first choice in multiple sports applications, like bicycle grips and inner tubes. Eclipse TPU material can be stretched by over 400% before failure.
Modern TPU is a highly sustainable material which can be recycled and reused without losing significantly on its material properties, it's therefore poised to lead in future material developments
Thermoplastic Polyurethane (TPU) is a thermoplastic elastomer that sits between rubber and plastic — combining the elasticity of one with the processability of the other. Commercialised in the 1950s, TPU gained wide adoption in sports equipment over the past 15 years thanks to its elasticity, abrasion resistance, and durability.
TPU is known for its high elasticity, flexibility, durability, and resistance to abrasion, which makes it first choice in multiple sports applications, like bicycle grips and inner tubes. Eclipse TPU material can be stretched by over 400% before failure.
Modern TPU is a highly sustainable material which can be recycled and reused without losing significantly on its material properties, it's therefore poised to lead in future material developments