Tubeless Sealant

The right sealant will keep your tubeless setup airtight for months, so at Off Course we’ve tried a bunch of options before narrowing our range to Orange Seal, Stan’s and Panaracer sealants.
After thousands of kilometres of staff-testing and workshop experience, here’s what we’ve discovered.

(If you dislike chemistry, you can skip the stuff below and follow this rule: Orange Seal is used for road and gravel setups, Stan’s is used for mountain bikes.)

For Rene Herse tires, Orange Seal is our preference. Its less viscose chemistry allows the ultra-fine pores in Rene Herse’s lightweight sidewall compound to be effectively sealed. Viscosity is a measurement of a fluid’s resistance to flow. Imagine pouring water (not very viscose) versus cement (extremely viscose). For ultra-fine pores, we need a fluid capable of easily flowing into these tiny spaces.

Stan’s sealant is a little more viscose than Orange Seal, and is marginally more effective when sealing larger punctures such as you might see on mountain bike tires when a sharp rock creates a hole. Returning to the water-versus-cement analogy, in this case we would probably prefer cement as a big-hole-stopper, compared to water.

Panaracer’s sealant is closer in composition to Rene Herse than Stan’s, and is entirely organic.

No sealant is necessarily “better” than another. Rather, it is important to select the right sealant for your tires.

If you want some advice about which sealant is the one for you, have a chat to us here at Off Course.