This Viton O-ring fits the 3/4 inch (19mm) Scepter clear or black fuel spouts for 2.5 & 5 gallon Canadian/U.S. military fuel containers. The original black O-ring was designed to be used with diesel fuel & is made of Buna-Nitrile which will crack and erode when exposed to todays fuels (unleaded, ethanol, ethanol blends, Bio-Diesel and other Bio-Fuels). Viton's superior qualities make it highly resistant to unleaded & biodiesel fuels and it will last much longer than the original buna O-ring. Finding replacement O-rings for Scepter spouts has become difficult due to all the EPA/CARB regulations. Scepter & most of their distributors no longer sell the high end military version fuel cans or accessories to civilians due to new EPA/CARB regulations. Scepter's light weight, stackable, dent resistant, non rusting Jerrycan style containers/spouts are designed to meet high military standards. They meet the military's requirement for 5 gallon fuel containers to empty in under 1 minute. The new EPA fuel spouts take longer & are awkward to work with as you may have noticed. Scepter makes one of the highest quality fuel cans on the market. Maintain your investment with genuine new Viton O-rings.
Installation: 1 - Use a pick or small screwdriver (may need both) and pry out old o-ring. 2 - Roll the new o-ring into position. 3 - Your done! That's it.