JIKOH Mfg., Inc. warranties its Opti-Klear brand sight glasses to be free from material defects or workmanship for a period of twelve months from the date of sale.

We will replace any sight glass deemed defective within that time frame.

Since JIKOH Mfg., Inc. has no control over the use of our sight glass or type of fuel or additive that the sight glass may be subjected to, we will not replace those sight glasses that have cracked, crazed, turned cloudy or yellow. There are additives that are added to petroleum fuel such as; MTBE, oxygenated benzene, ethanol, naphtha, xylene, toluene, methanol and others that may adversely affect our sight glass or other plastic or rubber components of a petroleum trailer.

Therefore - it is the owner's responsibility to maintain good maintenance procedures to replace any component that may be adversely affected by these additives or combinations thereof. Sight glasses should be inspected on a daily basis for any signs of cracking or crazing.