This is a closing plug with an internal hexagon. Zinc-coated steel fittings provide some corrosion resistance, but are not meant for corrosive environments. This plug has an NBR seal.
Specifications
Thread : UNF 7/16-20
Connection type : Outer thread flare (UNF)
Material : Steel
Seal material : NBR (nitrile rubber)
Max pressure at 20 °C (bar) : 630
Min temperature (°C) : -25
Max temperature (°C) : 100
Material connection 1 : Steel
Surface protection connection 1 : Galvanic zink plated
With drain : No
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