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The Tubeless Sealant Formula Low Pressure 500 mL is a specially formulated tubeless tyre sealant designed for bikes running lower tyre pressures (up to ~3.5 bar / 50.7 psi). Using an advanced synthetic latex and polymer blend, it stays liquid longer inside the tyre to maximise puncture-sealing performance and minimise pressure loss when a hole occurs. It’s ammonia-free for tyre and rim safety and compatible with mousse systems and CO₂ inflators. Suitable for MTB, gravel, e-bikes, fat-bikes, tubular tyres, inner tubes and even scooters, this sealant is ideal for reliable protection in diverse low-pressure setups.
Product Overview
The Tubeless Sealant Formula Low Pressure 500 mL is a high-quality tubeless tyre sealant developed by grezzy+ to deliver rapid, dependable sealing performance for lower-pressure bicycle tyre systems. Crafted with a modern synthetic latex and cutting-edge polymer formula, this sealant remains liquid longer within the tyre, increasing its ability to seal punctures quickly and effectively while maintaining consistent pressure.
Optimised for Low Pressure: Specifically engineered for use with tubeless tyres running pressures up to approximately 3.5 bar (50.7 psi), making it well suited for MTB, gravel and adventure bikes.
Rapid, Durable Sealing: The advanced synthetic latex and polymer blend reacts quickly to breaches in the tyre, sealing cuts and punctures while maintaining pressure and ride quality.
Minimised Pressure Loss: Designed to reduce air loss during sealing events, helping you stay rolling with minimal interruption.
Ammonia-Free & Safe: Formulated without ammonia, protecting tyre rubber and alloy or carbon rims from chemical damage.
Broad Compatibility: Works with mountain bikes, gravel bikes, e-bikes, fat-bikes, tubular tyres, inner tubes and scooters.
Accessory Friendly: Compatible with mousse inserts and CO₂ inflators for flexible workshop or field use.
This sealant uses a carefully balanced blend of synthetic latex particles and modern polymers that remain mobile within the tyre until a drop in pressure or a puncture occurs. When a breach appears, the formulation rapidly gels to seal cuts and holes, stopping air loss and helping you continue your ride with confidence.
Typical Application Steps
Shake the Bottle: Shake well to ensure the latex and polymers are properly mixed.
Introduce to Tyre: Add the appropriate quantity through the valve (with the core removed) or directly into the tyre bead.
Seat and Inflate: Inflate the tyre until the bead seats correctly.
Rotate Wheel: Rotate and shake the wheel to distribute sealant evenly inside the tyre for optimal coverage.
For low-pressure tubeless setups, such as those common on trail mountain bikes and gravel bikes, not all sealants perform equally. The Low Pressure formula from grezzy+ was developed specifically to overcome the challenge of sealing punctures at lower air pressures while reducing the loss of inflation and prolonging tyre integrity. Its improved liquid stability and polymer performance ensure that the sealant stays ready to react exactly when you need it most.
It’s also ammonia-free, safeguarding tyre casings and rims for long-term use — a key benefit for riders who want effective protection without compromising equipment condition.
Volume: 500 mL
Formula: Advanced synthetic latex and polymer sealant
Suitable For: MTB, gravel, e-bike, fat-bike, tubular tyres, inner tubes, scooters
Pressure Range: Up to ~3.5 bar / 50.7 psi
Ammonia-Free: Yes, safe for tyre rubbers and rims
Compatibility: Works with mousse systems and CO₂ inflators
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