SilcaUltimate Sealant, 1000ml(Return to Product Page)

Use this product on my gravel and road bike. It has effectively sealed flats caused by small nail.

Tested if improved from last sealant. It still plugged my lubricated tubeless valve core as recommended by Silca. It happened to both my bikes with this refresh. Maybe I really need those big bores but not long enough for my wheelsets. Silca make one.

I'm using Reserve Fillmore valves so I wasn't able to inject this stuff but I still used a sealant injector to get it into the tire without making a mess and it did not clog. I've already had a small puncture that sealed but it did take a while, it was close to the sidewall and I probably didn't have enough sealant in the tire to be honest. I didn't look at the recommended amount for the size tires I'm using so I should have added 15-20ml more. Assuming this stuff lasts at least a few months and the fiber foam stays suspended in the sealant rather than gathering along the tire bead making it less effective then I will buy it again. It is expensive but so far so good and it is a vast improvement over the original stuff as far as usability goes.

I really like the new updated sealant, my first time using it sealed up multiple punctures in my gravel tires.

My punctured tire started losing air more rapidly so I added 30ml of sealant and now it is holding air much better. Much like Muc-off and Peaty's sealants this stuff coats the inside of the tire so more than usual is needed to have the free flowing puddle to take care of larger punctures.

Tested if improved from last sealant. It still plugged my lubricated tubeless valve core as recommended by Silca. It happened to both my bikes with this refresh. Maybe I really need those big bores but not long enough for my wheelsets. Silca make one.

Sealed very good. Able to use injector through stem although it's hard to push through. Seems like a better option than their original 2 part stuff.