NZKW Australia Silicone Block Off Caps | Coolant & Air Hose Plugs NZKW Australia Silicone Block Off Caps are designed for securely sealing air and coolant lines during maintenance, fabrication or system modification. Built from high-quality silicone, these caps provide a reliable, reusable sealing solution for automotive, motorsport and workshop applications. Ideal for blocking off hoses during cooling system work, pressure testing or temporary system isolation, these caps offer excellent heat resistance and durability under demanding conditions. Specifications Uses: Air or coolant systems Operating Temperature: -40°C to 220°C (428°F) Pressure Rating: 0.3 to 0.9 MPa Standard Colour: Black Size Tolerance: ±0.5mm Why Buy This Product? Heat resistant silicone construction for demanding environments Suitable for coolant and air system block-offs Reusable and durable for workshop and motorsport use Helps during pressure testing and system diagnostics Flexible fitment with slight tolerance allowance Clean and simple solution for temporary or permanent sealing Ideal For Cooling system maintenance Radiator and hose testing Turbo and intake system work Workshop and fabrication use Motorsport pit and garage setups General automotive repair and modification NZKW Australia – Trusted Local Supply NZKW Australia is proudly based on the Gold Coast and supplies high-quality silicone hose products, AN fittings and workshop consumables to automotive professionals and enthusiasts across Australia. We ship Australia-wide, ensuring reliable products for both performance and general workshop use.
