EMFI Emfimastic PU 25

EMFIMASTIC PU 25 – 高彈性聚氨酯密封膠

EMFIMASTIC PU 25 是一款單組份、聚氨酯基彈性密封膠，能在接觸空氣濕氣後固化形成持久彈性的密封層，適用於多種建築及施工表面。此產品擁有優異的附著力，幾乎可粘結於所有常見建築材料，如混凝土、木材、石材、鋁合金、陶瓷及磚石等，無需使用底漆即可施工，提升施工效率。

主要性能特點包括高伸長率（超過600%）、良好的抗撕裂強度及極佳的耐老化與耐候性能，能承受熱脹冷縮及結構微動而不龜裂，適合室內外縫隙密封應用。其耐紫外線和耐化學性能優秀，適合港澳地區潮濕多變的氣候環境。產品固化後表面可接受水性漆塗覆，方便進行後期裝飾處理。

EMFIMASTIC PU 25 通過多項國際標準認證（如ISO 11600 F 25 HM，ASTM C920 Class 25），具備優良的環境適應性及安全性，部分顏色亦獲得NSF認可適用於冷水飲用水接觸。施工溫度範圍廣（5℃至35℃），適用於多種工程場景。

主要特點：

• 單組份聚氨酯彈性密封膠，濕氣固化

• 高伸長率 (>600%)，抗撕裂強度優異

• 良好耐候性與耐紫外線性能

• 廣泛適用於混凝土、金屬、木材、石材等多種基材

• 無需底漆，施工便利

• 可水性漆塗覆，利於裝飾

• 符合ISO 11600、ASTM C920 等國際標準

• NSF認證部分產品適用於飲用水接觸

• 適用溫度範圍5℃至35℃

典型應用場景：

• 建築及幕牆縫隙密封

• 門窗框架與伸縮縫填縫

• 室外結構與裝飾縫隙防水

• 各類建築材料粘結

• 需耐久彈性與抗老化的密封工程

EMFIMASTIC PU 25 是專業建築及裝修工程中，針對高要求密封性能的可信賴選擇，能有效防水、防塵、耐候與抗裂，保障工程長期安全與美觀。

EMFIMASTIC PU 25 – High-Elasticity Polyurethane Sealant

EMFIMASTIC PU 25 is a single-component, moisture-curing polyurethane-based elastic sealant that forms a long-lasting, flexible seal upon exposure to atmospheric moisture. It bonds excellently to a wide range of common construction materials, including concrete, wood, stone, aluminum alloy, ceramics, and masonry, without the need for a primer, thus enhancing application efficiency.

Key performance features include an outstanding elongation capacity of over 600%, excellent tear resistance, and superior weathering and aging durability. It can withstand thermal expansion and contraction as well as structural movement without cracking, making it ideal for both indoor and outdoor joints. The product displays excellent UV and chemical resistance, making it well-suited to Hong Kong’s humid and variable climate. After curing, the surface can be coated with water-based paints, facilitating finishing and decoration.

EMFIMASTIC PU 25 complies with major international standards such as ISO 11600 F 25 HM and ASTM C920 Class 25, ensuring excellent environmental adaptability and safety. Certain color variants are NSF certified for potable cold water contact. It is suitable for use in a wide temperature range from 5°C to 35°C, matching diverse project requirements.

Key Features:

• Single-component, moisture-curing polyurethane elastic sealant

• High elongation (>600%) and excellent tear strength

• Outstanding weathering and UV resistance

• Excellent adhesion across multiple substrates: concrete, metal, wood, stone, etc.

• Primer-free application for convenience

• Surface paintable with water-based coatings

• Meets ISO 11600, ASTM C920 and other international standards

• NSF certification for some colors, suitable for potable water contact

• Wide application temperature range: 5°C to 35°C

Typical Applications:

• Joint sealing in building and curtain wall construction

• Sealing of window and door frames, expansion joints

• Outdoor structural and decorative joint waterproofing

• Bonding various construction materials

• Projects requiring durable elasticity and aging resistance

EMFIMASTIC PU 25 is a trusted choice for professional construction and finishing projects demanding high-performance sealing, providing effective waterproofing, dustproofing, weather resistance, and crack prevention to ensure long-term durability and aesthetics.