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The Tubeless Sealant Formula High Pressure 500 mL is a premium tubeless tyre sealant engineered for fast, effective and durable puncture sealing — especially suited to higher-pressure systems (up to 6 bar / 87 psi) without compromising protection. Its advanced synthetic latex and polymer blend forms a reliable seal in extreme conditions while minimising pressure loss, and is compatible with mousse inserts and CO₂ inflators. Free from ammonia, it’s safe for tyres and rims, and versatile enough for MTB, road, gravel, e-bikes, fat-bikes, tubulars and scooters.
Product Overview
The Tubeless Sealant Formula High Pressure 500 mL is a specialist tubeless tyre sealant developed by grezzy+ to deliver rapid, long-lasting sealing performance in modern bike setups. Built around an advanced synthetic latex and high-tech polymer formula, this sealant is optimised to cope with higher tyre pressures (up to 6 bar / 87 psi) while still performing reliably in demanding conditions.
Whether you ride road, gravel, mountain, e-bike or fat-bike, running tubeless tyre systems brings major performance gains — but it also means choosing a sealant that can keep up. This High Pressure formula has been engineered to do just that: sealing punctures quickly with minimal pressure loss, boosting confidence and keeping you rolling.
High-Pressure Performance: Designed to work efficiently at pressures up to 6 bar (87 psi), great for road and gravel rigs where tyre pressures are higher than typical MTB settings.
Rapid, Durable Sealing: Advanced synthetic latex and polymers create a robust, flexible seal that stops leaks without significant pressure drop.
Minimal Pressure Loss: Keeps inflation levels stable after a puncture, so you don’t lose ride quality or control.
Ammonia-Free & Safe: Manufactured without ammonia, protecting both tyre rubber and rim materials.
Broad Compatibility: Suitable for tubeless setups across disciplines — from MTB and road bikes to gravel, e-bikes, fat-bikes, tubular tyres and even scooters.
Works with Accessories: Compatible with mousse inserts and CO₂ inflators, offering flexibility for workshops and racers alike.
This sealant uses a blend of synthetic latex particles and advanced polymers that remain liquid within the tyre until a drop in pressure or a puncture occurs. At that point, the formulation rapidly gels and seals cuts or holes, restoring air retention and preventing slow leaks.
To maximise performance:
Shake Well: Ensure the latex and polymers are fully mixed.
Introduce to Tyre: Add the appropriate amount through the valve (with valve core removed) or directly via the tyre bead.
Inflate & Rotate: Inflate to seat the bead, then rotate the wheel so the sealant coats the interior evenly.
Running tubeless tyres is a key performance upgrade for serious cyclists — but a sealant that struggles at higher pressures or takes its time to react can leave you stranded. This High Pressure formula is tailored for competitive and performance-focused riders who demand both quick sealing action and durable results across a wide range of conditions.
Its ammonia-free, tyre-friendly formulation also makes it a practical choice for regular maintenance, whether you’re prepping race wheels or setting up a new wheelset.
Volume: 500 mL
Formula: Synthetic latex and polymer tubeless sealant
Suitable For: MTB, road, gravel, e-bike, fat-bike, tubular tyres, scooters
Max. Recommended Pressure: up to 6 bar / 87 psi
Ammonia-Free: Protects tyre rubber and rims from chemical damage
Compatible With: CO₂ inflators and mousse system
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