Maxxis launches tubeless sealant: An end to punctures thanks to Maxx Seal?

​Tyre specialist Maxxis is launching its first ever tubeless sealant, Maxx Seal. The sealant is designed to complement the existing range of tyres seamlessly – whether for gravel bikes, road bikes or (e-)mountain bikes.

Anyone who rides tubeless tyres is familiar with the ritual: fitting the tyre, pouring in the sealant, and hoping it all holds. Until now, Maxxis customers have had to rely on products from other manufacturers – but that is set to change from August 2026. With Maxx Seal, the Taiwanese tyre manufacturer is launching its first in-house sealant, which complements Maxxis’s comprehensive range of tyres.

In this article, we highlight 13 products that really make tyre set-up a lot less of a hassle.

Synthetic latex as a base

The sealant is based on a synthetic latex formula – an approach also adopted by other established manufacturers in this sector. Maxxis emphasises that it has formulated the liquid so that it distributes evenly inside the tyre without forming lumps. The latter is a common criticism of sealants that remain in the tyre for long periods.

According to the manufacturer’s specifications, Maxx Seal was tested at temperatures ranging from -20 °C to +55 °C – a range designed to cover both winter rides and hot summer days during racing. Punctures up to seven millimetres in size are said to be reliably sealed, regardless of weather conditions.

Ammonia-free and gentle on materials

Another feature that Maxxis highlights is the absence of ammonia. Ammonia is used as a preservative in some sealants, but is suspected of causing long-term damage to tyre casings and, in particular, alloy rims. According to the manufacturer, Maxx Seal is said to be gentle on both the skin and materials, and does not damage either the tyre carcass or the rim.

Furthermore, the company highlights the product’s compatibility with CO₂ cartridges and tyre inserts – two components that are becoming increasingly common in modern tubeless set-ups.

Packaging and availability

Maxx Seal is available in three bottle sizes made from recycled PET: 250 ml for around 17 euros, 500 ml for 22 euros and one litre for 35 euros. For workshops and clubs, there is also a five-litre HDPE canister available for 135 euros. The use of recycled PET is a small but visible step towards sustainability – in an industry that is increasingly under scrutiny in this regard. The new sealant is due to be available in specialist cycle shops from the start of August 2026.

Classification

Maxxis is not entering an untapped market with its tyre sealant. Similar products from various brands have been well established for years and have a loyal customer base. It remains to be seen whether Maxx Seal can succeed solely on the strength of brand synergy with its own tyres.