303 Stainless Steel Gasketed Glass Sight for visual observation of liquid levels and their condition. This sight glass is typically used in any application where oil or fluid inspection is essential. The housing is a 303 Stainless Steel fitting with U.S. standard NPT threads conforming to ASME B1.20.1. Use traditional installation tools and Teflon tape or pipe sealant. This sight has Buna-N internal seal with good chemical compatibility with Petroleum oils and fluids; Cold Water; Silicone greases and oils; Dibasic Acid Ester (Diester) based lubricants (MIL-L-7808); Ethylene glycol base fluids (Hydrolubes). Not Recommended for: Halogenated hydrocarbons (carbon tetrachloride, trichloroethylene); Nitro hydrocarbons (nitrobenzene, aniline); Phosphate ester hydraulic fluids (Skydrol, Fyrquel, Pydraul); Ketones (MEK, acetone); Strong Acids Ozone; Automotive brake fluid.

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