Cheng Shin Inner Tube Sealant is a pre-treatment for tubed tires
that can be installed before a puncture occurs to prevent flat tires.
It is a neon-green, non-aerosol, non-hazardous, water-soluble liquid
sealant that instantly seals punctures up to 1/8". The clotting agents
create a long lasting flexible plug that last up to 2 years. It can
also be used for flat tire repair...

Cheng Shin Tubeless formula Super Duty is a non-aerosol liquid tire
sealant and remains active for up to 2 years... it is non-toxic, non-
flammable and water-soluble...It also contains rust and corrosion
inhibitors that will not damage alloy rims. The clotting agents create a
long lasting flexible plug that last up to 2 years.