Machined and Threaded Aluminum Cap, 3-1/2" KC5022

If a hole is needed please specify the hole size in the comments section upon checkout.

3 1/2" (thread diameter) aluminum cap insert with 1 1/4" Block for vent hole, for molded in threads. 

Fits Kelch Assemblies Plastic Closure Series H70, Target 350, TIPS 350 and Power Grip 350 caps. Inserts are machined with calculated shrinkage of 0.025 inches per inch for polyethylene.

Cap inserts can be special ordered to accommodate the calculated shrinkage of other materials.

Aluminum Cap insert with machined modified buttress thread to fit a variety of tank diameters. Special outer diameters on request.

Also see Norstar's other aluminum caps on special. Part Numbers: KC5007, KC5013, KC5016.