u/unsightedboss

I had luck in this group once before and decided to try again. I have already checked AI and Sprinkler Warehouse with no luck. I need help identifying this part. It is the small rubber plug that has deteriorated. I need to know the part name or number so I can order a new one. There is no manufacturer name or part # on the pump header or manifold. I have taken out the gasket and other parts and cleaned them with no luck. I think it is this plug that is causing the leak. Any help is appreciated.