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The Mainline MLC-2 is a rubber test cap designed for pipe fittings. This cap fits various applications where testing and sealing are required. It is essential for plumbing and HVAC systems.
This test cap is useful for holding pressure in pipe systems during testing.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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