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Black forged steel pipe cap with female NPT threads

Zoro Select

Zoro Select 1MNE6 Cap 1-1/2" Pipe FNPT Black Forged Steel

SKU CH-MFZV-694EE

Black forged-steel cap with 1-1/2 inch female NPT threads seals pipe ends securely

  • Forged steel construction resists high pressure and impact
  • Female NPT threads create a secure, leak-tight seal
  • Black finish protects against corrosion in harsh environments
  • 1-1/2 inch nominal size fits standard piping systems
  • Round cap design closes pipe ends cleanly and permanently

Zoro Select 1-1/2" Pipe Cap

This forged steel cap closes a 1-1/2 inch nominal pipe size using a female NPT connection. The black finish protects the steel surface in plumbing installations. It is supplied without pre-applied thread sealant or an included seal.

For Plumbers Capping Female Threaded Ends

The part suits installers who need a durable forged steel closure for a 1-1/2 inch pipe with FNPT threads. Buyers requiring a male-threaded plug, a different nominal size, or a fitting that ships with sealant already applied should select another product.

Female NPT Thread Type

The connection uses a female National Pipe Taper thread to receive a male-threaded pipe or nipple. This thread standard determines whether the cap mates correctly with the existing piping system. Verify the thread type on the pipe before ordering.

How it compares

Measured against everything we stock in Garden Hoses & Pipe Tubing, at today’s prices. Recalculated every night.

Price $12.99
Cheaper than about 70% of the 973 comparable items (median $21.99).

Specifications

Product
Brand nameZORO SELECT

Questions about this item

Does this 1-1/2 inch FNPT forged steel cap require a male NPT pipe of the same nominal size to seal properly?

Yes, the female NPT threads are cut for 1-1/2 inch nominal pipe size, so a matching male NPT pipe or fitting is needed for a tight seal.

Will the black forged steel material cause galvanic corrosion if I thread it onto older brass or copper piping?

Direct contact between steel and copper alloys can accelerate corrosion; using a dielectric union or brass transition fitting between dissimilar metals is recommended.

After installation, how can I verify the cap is holding pressure without a visible leak?

Pressurise the system to its working pressure and inspect the joint for moisture or bubbles; a dry, bubble-free thread joint confirms the cap is sealing as intended.

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