About this itemRubber Material: This tank sealing ring is made of rubber, which has good tensile strength, elongation and resilience, is not easy to break, and can play an excellent sealing role. Wear-resistant and high-temperature-resistant properties can reduce friction, reduce wear and proits service life.Application: Fits NATO 20L (5 gallon NATO oil tank) spec tanks/spouts for cars. Holds a variety of liquids including oline, , oil and water. Great for UK or European steel/metal tanks.Good Sealing: It can seal the tank, prevent the tank from leaking, and improve the working efficiency of the tank. At the same time, it absorbs the oline in the upper part of the tank, so as to dilute the oline when opening the tank cap to re, and reduce the pollution to the envment.Kindly Note: This tank ket is an armarket repment product that meets or exceeds the quality of OEM kets and will not fit other size NATO tanks or other tank types. It is recommended that you chethe product size to ensure a proper fit before ordering.SpecificationMaterial: rubberSize: About 54*43mmColor: BlackSuitable for: NATO 20 liter/liter (5 gallon NATO tank) specification tank/spoutQuantity: 1pcPackage Includes:1*Sealing ket