Delta Faucet Cartridge | Noels Plumbing Supply Inc

“Old Style Diverter Stem for American Standard Re-Nu 18355-0200” has been added to your cart. View cart

White plastic cartridge with brass stem black oring stainless bottom with black seats and stainless springs.

Scald Guard Replacement Kit for Delta 1600 Series Single Handle Tub and Shower Faucets NRP1991 NRP3560 - Image 2

Scald Guard Replacement Kit for Delta 1600 Series Single Handle Tub and Shower Faucets NRP1991 NRP3560 - Image 3

WHAT OUR CUSTOMERS SAY…

“I was very happy with Noel’s Plumbing. I was searching for a fairly rare part and saw it listed on their website. After placing my order, I was informed that the item was actually on backorder. Noel’s Plumbing was upfront and honest right away, letting me know it might take some time to arrive. Throughout the wait, they consistently kept me updated, which I really appreciated. When the part finally came in, they shipped it out immediately. It arrived exactly as described and was precisely what I needed. Excellent communication, honesty, and follow-through. Thank you, Noel’s Plumbing! ”

-Dave F.

04/04/2026

$35.27

The Delta Faucet RP1991 Stem Unit & Seats is a genuine Delta repair part designed for use with the Delta 1600 Series tub and shower faucets. It is used for fixing leaks and ensuring proper water flow and temperature control.

We can ship anywhere the US Postal Service ships. For orders being shipped outside the US, please contact us at (888) ASK-NOEL, noelsplumbingsupply@fuse.net, or via the text widget on this screen.

Share on:

Scald Guard Cartridge for Delta Faucet

NRP1991 NRP3560

Compares to OEM RP1991 RP3560
Use as a generic replacement OEM RP1991 RP3560
2″ length
Oval broach
Includes seats & springs
Replacement part for Old Style 1600 Series Faucets

Related Documents

Delta Model 1600 Series Parts

Customer submitted images.

Common questions about this product

Yes, this aftermarket part will replace your OEM part.

If you’re not sure text us a picture 1-888-275-6635 or email us a picture at noelsplumbingsupply@fuse.net.

We will make sure you have the right part.

WHAT OUR CUSTOMERS SAY…

“Order received and installed. Thank you very much (spoken mentally in my best Elvis voice). Really is nice to know that there is still a business out there that's got their act together! Appreciate the quick service and correct parts shipping. Thanks again.. jP ”

-Jack P.

04/02/2026