Weather Proof Silicone Sealant for Construction Curtain Wall Sika 305 Sealant

• CAS No.: 94766-07-1
• Formula: 94766-07-1
• EINECS: 94766-07-1
• Bonding Function: Structural Adhesive
• Morphology: Solid-State
• Application: Automobile, Construction, Woodworking, Footwear & Leather, Fiber & Garment, Packing
• Material: Silicone
• Main Agent Composition: Natural Polymer
• Characteristic: Waterproof
• Color: White
• Type: Silicone Sealant
• Seal Tape Kind: High Density Colored PTFE Tapes
• Seal Tape Usage: Engineering
• State: Static Seal
• Mildew Proof: Not Mildew Proof
• Bonding Material: Glass
• Trademark: sikasil
• Production Capacity: 3000000

Product Description

PRODUCT BENEFITS

• Meets requirements of GB/T 14683 and ASTM C 920 for Type S, Grade NS, Class 50 (movement capability ± 50 %)
• Very good UV and weathering resistance
• Adheres well to many substrates including glass, metals, coated and painted metals, plastics and wood
• Conformity with LEED v4 EQc 2: Low-Emitting Materials

Areas of Application

Sikasil WS-305 S can be used for weatherproofing 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 experienced professional users only. Tests with actual substrates and conditions have to be performed ensuring adhesion and material compatibility.  

Product Details

Chemical base		1-component silicone
Color (CQP001-1)		Various colors available ^A
Cure mechanism		Moisture-curing
Cure type		Neutral
Density (uncured)		1.40 kg/l
Non-sag properties (CQP061-4 / ISO 7390)		Good
Application temperature	ambient	5 - 40 °C
Skin time (CQP019-1)		45 minutes ^B
Tack free time (CQP019-3)		140 minutes ^B
Curing speed (CQP049-1)		(see diagram)
Shore A hardness (CQP023-1 / ISO 48-4)		25 ^C
Tensile strength (CQP036-1 / ISO 527)		1.5 MPa
100 % modulus (CQP036-1 / ISO 527)		0.4 MPa
Elongation at break (CQP036-1 / ISO 527)		600 %
Tear propagation resistance (CQP045-1 / ISO 34)		8.0 N/mm
Service temperature		-40 - 150 °C
Shelf life	unipack cartridge	15 months ^D 12 months ^D