Sika 西卡 SikaHyflex®-305 AP 外牆密封膠

SikaHyflex®-305 AP 是一款高性能單組份、吸濕固化的低模量彈性填縫膠，專為幕牆、金屬覆層及外牆的天氣密封接縫設計。產品耐候性及老化性能優異，能承受ASTM C 719標準±50%的接縫位移，保持良好彈性。此中性固化、無溶劑配方對多種基材具良好附著力，且不會引起腐蝕或相容性問題。施工性佳，操作順暢，可建立持久耐用的防水防氣密封，使建築物外殼免受水氣和空氣滲透。

主要特點：

• 單組份，吸濕固化，低模量彈性密封膠

• 出色耐候性和長期耐用性

• ±50%高位移能力，適應結構變形

• 具良好附著力，適用金屬、玻璃及混凝土等多種材質

• 中性固化，無溶劑，無腐蝕風險

• 施工性良好，易於操作和控制

典型應用範圍：

• 幕牆及結構玻璃接縫密封

• 金屬覆層外牆接縫

• 建築外牆及裝飾構件的伸縮縫密封

• 有位移及耐候需求的縫隙填充

包裝規格： 標準填縫膠筒裝

SikaHyflex®-305 AP – One-Component Low-Modulus Elastic Weather Sealant

SikaHyflex®-305 AP is a high-performance, one-component, moisture-curing, low-modulus elastic sealant specially designed for weather sealing joints in curtain walls, metal cladding, and façades. It offers excellent resistance to weathering and aging while maintaining flexibility to accommodate joint movement up to ±50% according to ASTM C 719. This neutral-cure, solvent-free sealant adheres strongly to a wide range of substrates without causing corrosion or compatibility issues. Its excellent workability ensures smooth application and long-lasting, durable seals that protect building envelopes from water and air infiltration.

Key Features:

• One-component, moisture curing, low-modulus elastic sealant

• Excellent weathering resistance and durability

• High movement capability of ±50% to accommodate structural shifts

• Good adhesion to many substrates including metal, glass, and concrete

• Neutral cure, solvent-free formulation with no corrosion risk

• Very good workability for easy and precise application

Typical Applications:

• Weather sealing for curtain walls and structural glazing joints

• Metal cladding facade joints and seals

• Expansion joints in building facades and architectural elements

• Sealing gaps prone to movement and weather exposure

Packaging: Available in standard sealant cartridges