Tarkett931 Rapid Reaction Epoxy Caulking is a fast-setting, two-component, solvent-free,100% epoxy caulking compound designed to specifically prevent the flexing and premature cracking of rubber or vinyl stair treads and stair nosings. Packaged in a dual-component cartridge with static mixer tips Includes a self-mixing nozzle Eliminates waste – no need to waste the first 6-12” of material common with other dual cartridge epoxy products Setstoahard,permanentbond Recommended for use on stairs where damaged or rounded edges, high traffic, or anywhere requiring support to the nosing When installed on rubber and vinyl treads in combination with Tarkett PowerTapeTM, foot traffic can be introduced in as little as 1 hour