Vent Plugs
MRI® Investment Casting Vent Plugs
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TRIAL PACK 
So that you may inspect and test the MRI Vent Plug Product, a free trial pack is made available with every Request For Quote submission. Simply select which of the above models most closely fits your needs and notify MRI. A trial pack will be shipped for testing and approval.
SIZES / SHAPES
MRI Vent Plugs are hard ceramic products used to plug vent holes molded onto complex wax pattern assemblies which assists in the de-waxing of the mold.
MRI Vent Plugs are designed with tapered sides to prevent pushing through the vent hole into the de-waxed mold. All vent plugs have radius edges to avoid emitting ceramic inclusions to the pour.
MRI offers three standard sizes of vent plugs available without a tooling charge. Standard tolerances of +/- 1 1/2% apply.
MATERIAL
MRI vent plugs are molded of a high grade mullite refractory composition tested and proven in use in investment casting applications for over 40 years.
TRACE ELEMENT CONTROL
MRI uses only the highest quality raw materials to control trace element levels within industry standards. Testing and reporting of trace element parts-per-million levels is performed by an independent laboratory.
CUSTOM DESIGN AND MANUFACTURE
If a standard MRI vent plug size does not fit your specific requirement, MRI will assist in the design and manufacture of a custom vent plug to meet your needs.
MRI "Small" Vent Plug
MRI "Small" Vent Plug
MRI vent plug products are molded of a mullite refractory composition proven in a wide variety of investment casting applications for over (40) years. MRI vent plugs are hard ceramic products used to plug vent holes molded into complex wax pattern assemblies to assist in the de-wax of the mold. MRI vent plugs are available in SMALL, MEDIUM and LARGE sizes available without a tooling charge or custom design manufactured to your specific need.
MRI "Medium" Vent Plug
MRI "Medium" Vent Plug
MRI vent plug products are molded of a mullite refractory composition proven in a wide variety of investment casting applications for over (40) years. MRI vent plugs are hard ceramic products used to plug vent holes molded into complex wax pattern assemblies to assist in the de-wax of the mold. MRI vent plugs are available in SMALL, MEDIUM and LARGE sizes available without a tooling charge or custom design manufactured to your specific need.
MRI "Large" Vent Plug
MRI "Large" Vent Plug
MRI vent plug products are molded of a mullite refractory composition proven in a wide variety of investment casting applications for over (40) years. MRI vent plugs are hard ceramic products used to plug vent holes molded into complex wax pattern assemblies to assist in the de-wax of the mold. MRI vent plugs are available in SMALL, MEDIUM and LARGE sizes available without a tooling charge or custom design manufactured to your specific need.
