What makes the SILCA Ultimate Tubeless Sealant 2.0 seal so well?

SILCA Ultimate Tubeless Sealant 2.0 is the updated, injectable version of SILCA's tubeless sealant, reformulated so it stays liquid longer and injects cleanly through the valve, the two things riders asked SILCA to fix from the original. It uses a proprietary blend of natural and synthetic latex built to seal punctures 6mm and larger without losing pressure, and it is tested to keep sealing down to -15C (5F), so it holds up through cold-weather riding that thickens or freezes lesser sealants. It is ammonia free and runs as a one-step product with no separate activation.

The 2.0 is injectable through the valve using the SILCA Ultimate Sealant Injector, sold separately, and is available in 65ml, 500ml, and 1L bottles for road, gravel, and mountain. Two compatibility notes matter: it is not injectable in Reserve valves, and it is a different product from SILCA's FiberFoam sealant, so it does not use the SILCA Tubeless Replenisher Injector, which is for FiberFoam only. It works with tubeless-ready and UST rims and tires across every discipline.