Genuine JCB 518 Flowable Sealant, part number 32000831, is a high-strength, medium-viscosity anaerobic sealant. Designed for use on rigid iron, steel, and aluminium flange surfaces, it effectively fills gaps up to 0.25mm. This 50ml tube forms a flexible, solvent-resistant seal that will not tear or degrade, curing in the absence of air. It is ideal for close-fitting joints and commonly used for sealing gearboxes and engine casings across JCB machinery.