Glass tube in which oil level is viewed. Not to be confused with textured glass viewing element that protects this delicate glass tube. See yellow highlighted part in exploded diagram.

Product:	Leybold Sight Glass Tube for D30A Rotary Vane Pump, PN L0090
Condition:	New
Warranty:	Against Product Defect
Part Number:	P108837
Price:	$9.77