OKO Tyre Sealant 25L Drum Pump. For Puncture Free Tyres. Can be used for. 1/ All heavy vehicles. 2/ Tractors and Agricultural Vehicles. 6/ Ride On Lawnmowers. OKO concentrated tyre sealant is an advanced product which once injected into the tubed or tubeless tyre, seals punctures as they occur, thus eliminating tyre deflation. OKO is a preventative tyre sealant that prevents flat tyres. It will seal holes in the contact tread area caused by puncturing objects with a diameter of up to 7mm in off road situations. OKO will affect a permanent seal instantaneously without loss. Great at preventing punctures. If a puncture occurs it provides an instant permanent seal. This should be automatically calculated at the checkout. AB31-56, IV1-56, KA27-28, PH5-9, PH15-50, PA20-49 & 60-77, PA78, ZE1-3, HS1-9, KW1-17. AB31-38 & 43-56, FK19-21. If you want your items fast this is the preferred option. You will be notified when your cheque has cleared and your order has been dispatched.