OKO MINING X-TRA HEAVY DUTY tyre sealant offers a 'fit it and forget' solution to prevent punctures in the tread area of the tyre. It is recommended for tyres 25" and above, working in the worst terrain conditions such as those found at mines, quarries and construction sites. OKO MINING X-TRA HEAVY DUTY tyre sealant is specially formulated to seal holes up to 20mm and can cope with small holes as well as the large holes due to the multi-puncture sealing capability. OKO MINING X-TRA HEAVY DUTY tyre sealant also contains environmentally safe anti corrosive ingredients for protection from rust and has cooling properties, which help to extending tyre life. Each 25 Litre drum can be used with an installation pump that fits easily onto the threaded opening of the drum.