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All our products are manufactured in the U.S.A.

Cast Iron

Sizes Available:
Square Head Plugs – 1 – 4”
Square Socket Plugs – 1 – 4”
Available in Black and Galvanized Steel

Click below for detailed Specification PDFs 



Cast Iron Square Head Plug

Cast Iron Square Socket Plug

ROHS, WEE, REACH Compliant

1 - 4" NPT - 3/4 Taper per Foot

Square Head Plugs are Hollow

Square Socket Plugs are Solid