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Individually priced at $4.55 / Case of 676 priced at $4.25
This window sight is used for viewing coolant in a heavy duty truck produced in large numbers. The design is versatile enough for a variety of applications. Several thousand are available for a limited time at a highly discounted price. Window sights are used for viewing fluids on hydraulic tanks, pressure vessels, reservoirs, power equipment, hydraulic lines, and similar applications. YB3959 has a 5/8-18 thread and a Buna-N o-ring that creates a seal with the counterbore of the receiving part. The body is made from aluminum and the glass secured with a threaded brass ring. The viewing area has a 7/16" diameter and the overall hex size is 15/16". YB3959 is rated to 125 psi and 225º F. maximum. It is a proven performer in tough and dirty conditions. Contact the Oil-Rite Technical Sales Department for availability (920-682-6173). Minimum order quantity is 20 pieces.