Observation windows offer operators a way to visually monitor the lubrication of their machines and are made of a polycarbonate that can withstand temperatures up to 130C/266F. With optional guard rings, the windows can withstand internal pressures up to 8.8 psi or higher. All windows are push-fit-installed, self-locking, and oil-tight. Windows are available in oil-window and oil-circulation indicator versions.
Lowell Corp., Box 158, Worcester, MA 01613, FAX (508) 835-2944.