This is the Steamaster HPJ-2 and HPJ-2S (S stands for Solenoid model) 8" by 5/8" glass sight tube replacement kit with two rubber gaskets, two brass washers & two brass water gauge nuts (5/8").
Steamaster no longer supplies the rubber gaskets separately from the sight glass kit. They will now only sell this complete kit, as the sight glass must be replaced every time gaskets are worn in order to meet ASEM standards.
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California Prop 65 Warning: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to www.P65warnings.ca.gov.