Product Data Sheet Version 1 (09 / 2009) Technical Product Data 1) CQP = Corporate Quality Procedure Description Sikasil® WS-605 S is a durable, neutral-curing silicone sealant with a high movement capability and excellent adhesion to a wide range of substrates. Sikasil® WS-605 S is manufactured in accordance with ISO 9001 quality assurance system and the responsible care program. 2) 23°C (73°F) / 50% r.h. Product Benefits - Meets requirements of ISO 11600 25 LM F & G, ASTM C 920 (class 50), ASTM C 1248, TT-S00230C, TT-S001543A, DIN 18540, DIN 18545 (group E) - Outstanding UV and weathering resistance - Does not stain areas adjacent to the joint - Adheres well to glass, metals, coated / painted metals, plastics and wood Areas of Application Sikasil® WS-605 S can be used for weatherproofing and sealing applications where durability under severe conditions is required. It is particularly suited as a weather seal for structural glazing, curtain walling and windows. 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.

Further information available at: www.sika.co.uk www.sika.com Sika Limited Business Unit Industry Watchmead, Welwyn Garden City Herts, AL7 1BQ United Kingdom Tel. +44 (0)1707 394444 Fax +44 (0)1707 329129 Packaging Information Cure Mechanism Sikasil® WS-605 S cures by reaction with atmospheric moisture. The reaction thus starts at the surface and proceeds to the core of the joint. The curing speed depends on the relative humidity and the temperature (see diagram 1 below). Heating above 50°C to speed-up the vulcanization is not advisable as it may lead to bubble formation. At low temperatures...