braided high bulk glass fibre sleeve with VCO hook-and-loop closure. fire sleeve, heavy coating braided high bulk glass fibre sleeve with VCOhook-and-loop closure. Ideal choice for easy retrofits.Install Without Disconnecting Hoses or CablesConstructed from a high bulk glass fibre knitted or braid sleeve, heavily coated with the proprietary compound of Iron Oxide Red Silicone Rubber. Using high ...