Hybriflex-540 is a versatile neutral sealant, free from isocyanates, silicones and solvents and has excellent adhesion to most substrates. It is highly resistant to ageing, weathering, non-bubbling and is environmentally friendly. It is perfect for sealing cavities and holes, and to make a vehicle or container airtight. This durable and high quality sealant does not require a primer, and is paintable once fully cured.