D E S C R I P T I O N
Sikasil® WS-355 S is a neutral curing silicone sealant with a high movement capability and very good adhesion to porous and non-porous substrates.
It has been developed as weatherseal specific on natural stone.
P R O D U C T B E N E F I T S
▪ Does not stain areas adjacent to the joint
▪ Meets requirement of GB/T 23261
▪ Very good UV and weathering resistance
▪ Adheres well to natural stone, concrete, glass, metals, coated and painted metals, plastics and wood
A R E A S O F A P P L I C A T I O N
Sikasil® WS-355 S is a high-performance sealant suitable for jointing natural stone, such as marble, granite, sandstone and quartzite.
Sikasil® WS-355 S is used for sealing facades, e.g. cladding of natural stone or other materials.
This product is suitable for professional experienced users only. Tests with actual substrates and conditions have to be performed to ensure adhesion and material compatibility.
A p p l i c a t i o n l i m i t s
Most Sikasil® WS, SG, IG and WT, silicones manufactured by Sika are compatible with each other.
For specific information regarding compatibility between various Sikasil® products contact the Technical Department of Sika Industry.
To exclude materials influencing Sikasil® WS- 355 S, all materials such as gaskets, tapes, setting blocks, sealants, etc., in direct and indirect contact have to be approved by Sika in advance.
Where two or more different reactive sealants are used, allow the first to cure completely before applying the next. Sikasil® WS- 355 S may only be used in combination with structural glazing applications after a detailed examination of the corresponding project details.
Do not use Sikasil® WS-355 S on PMMA and PC elements as it may cause environmental stress cracking (crazing).