Silicone sealant, polyurethane sealant, poly sulfur sealant, acrylic sealant, anaerobic sealant, epoxy sealant, butyl sealant, neoprene sealant, PVC sealant and asphalt sealant.

Main look at several properties:

A, fracture strength (tensile force / cross sectional area)

Two, the adhesive strength (open the force / adhesive area, except for the destruction of the substrate)

Three, the elongation at break (rupture length / original length)

Four, anti-aging ability

Five, appearance (sub luminosity, particles, bubbles)

Six, the type of (not drawing, the facade is not sagging)

Seven, shelf life

Eight, curing time

There is no good or bad, the performance of the corresponding price, suitable for the best.

Secondly, there is stability and sufficient or not, this is the test of the manufacturers.