Delta Faucet Cap Assembly | Noels Plumbing Supply Inc

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Polished chrome cap with bright brass threads.

WHAT OUR CUSTOMERS SAY…

“Outstanding fast delivery on two pieces of an ancient Wolverine bath stem for Kohler - from the early 40s I think. The new one has a different body design, but it screwed directly into the old hot/cold tree and was the exact 6" length. Forty eight hours after installation now, and all remains fine. Also, kudos to the people who set up the website and ordering process. Great work - clear photos and info ! PS: I'm not an employee or family...lol. I retired from electrical wholesaling here outside Chicago and I appreciate a good job. ”

-JM C.

07/31/2026

$15.47

The Delta Faucet RP50 is a specific cap assembly with an adjusting ring used as a repair part for various single-handle Delta kitchen and lavatory faucets. It is typically made of brass with a chrome finish and is designed for easy, no-tools-required installation.

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Chrome Plated Cap Assembly for Delta

NRP50 NRP5437

The cap assembly, along with the included adjusting ring, helps apply precise pressure on the internal ball, seals, and springs to ensure proper handle movement and prevent leaks.
It is compatible with Delta 100, 200, 300, and 400 series kitchen faucets, as well as the 600 series and 1300/1400 series pressure balance faucets.
Compares to OEM RP50 RP5437
Use as a generic replacement for OEM RP50 RP5437