H.B Fuller 620 Grey is a neutral cure silicone sealant engineered for reliable roofing and glazing seals. It adheres strongly to glass, aluminium, steel, and masonry, delivering a flexible, weatherproof joint with excellent UV resistance. Non-corrosive and low odour, it’s suitable for use around metals and sensitive substrates. The easy-gunning, non-sag formula tools to a smooth finish for professional results. Use on flashing interfaces, skylights, windows, and facade joints where a long-lasting, colour-matched Grey seal is required outdoors.

$10.85

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