Pmaru77
Member
When you install a drain in a sink or a tub, the fitting is usually smaller than the hole it is going to go through.
In my case right now, I have a fitting that has 1.875 OD thread and goes into a tub that has a 2.25 dia. hole.
That is a lot of clearance, especially when the upper seal is plumbers putty. In previous cases, notably doing a kitchen sink, the curvature of the sink and the plumbers putty and the clearance all add up to when you tighten down the drain, it likes to move around and not stay symmetric. So to hopefully solve this dilemma I acquired an o-ring that will fit around the threaded (male) drain, and also pretty much match the OD of the tub hole. This should keep the drain way more concentric than nothing. Is this a good idea or is there another way of handling this? What do you pro's do? I got a feeling you do not run to the hardware store and buy o-rings.
In my case right now, I have a fitting that has 1.875 OD thread and goes into a tub that has a 2.25 dia. hole.
That is a lot of clearance, especially when the upper seal is plumbers putty. In previous cases, notably doing a kitchen sink, the curvature of the sink and the plumbers putty and the clearance all add up to when you tighten down the drain, it likes to move around and not stay symmetric. So to hopefully solve this dilemma I acquired an o-ring that will fit around the threaded (male) drain, and also pretty much match the OD of the tub hole. This should keep the drain way more concentric than nothing. Is this a good idea or is there another way of handling this? What do you pro's do? I got a feeling you do not run to the hardware store and buy o-rings.