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You can use one of our thread tapes or pipe joint compounds to complete this application. If you are using thread tape, wrap the male threads on the tail piece 2 or 3 times, and then screw the tail piece into the pop-up body. After the drain has been tested and found to be water tight, you can cut the excess thread tape off if desired. If you use pipe joint compound, only apply it to the male threads of the tail piece and wipe off excess after the drain has been tested.
With the exception of the P9703 and P9703BG, all of our plastic tubular products come with the True Blue washer. The P9703 and P9703BG come with the polyethylene rigid washer. All brass tubular products come with a square cut rubber washer, which performs better on the chromed surfaces.  
True Blue is IAPMO listed. True Blue won’t dry out or crack. This ensures long, leak-free protection. True Blue has superior flex fatigue protection, which extends the life of the washer. True Blue has advanced Thermoplastic Elastomer (TPE) properties. This allows the True Blue to retain its shape when the traditional polypropylene washer may not. Overall; the Ultra flexible elastomer washer combined with the tapered design, provides the end user with ultimate leak protection.
No. The S-Trap is not approved for any installations that require a plumbing permits and or inspections.
No. The Form-N-Fit is not approved for any installations that require a plumbing permits and or inspections. 
If you have a disposal installed in your kitchen sink, the dishwasher drain can be connected to the ¾” drain port designed into every residential disposal. If a disposal is not available for a drain connection, Oatey offers several styles of dishwasher branch tail pieces for this application. You can find these available tail pieces in category 15 in the Oatey catalog or on our website.

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