1-1/2" Flush Spinweld Fitting w/ Membrane - Part # 57M

4 customers have ordered this

Pairs well with

CPI - 1-1/2" FPT Spinweld Fitting - 2" Hole Size - Part # 56 cleaned product image 1
CPI - 1-1/2" Flush FPT HD Spinweld Fitting - 2-1/2" Hole Size - Part # 57HD cleaned product image 1
SKU: 57M/500496
Added to catalog: March 17, 2020
Last product update: July 13, 2026 at 9:26 PM

Sale price$4.99
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Available to order
Delivery Estimate October 14 – October 18
1-Hour Cancellation Window

1-Hour Cancellation Window

You'll have 1 hour after placing your order to update your shipping address or cancel completely.

After that, we begin coordinating with our vendors to fulfill your order — at that point, cancellations and address changes usually aren't possible.

If you're unsure about anything, please reach out before ordering or cancel within the window.

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About this item

  • Material: Plastic
Seal It Up: The Spinweld Fitting That Keeps Your RV Running Smooth
This 1-1/2" flush spinweld fitting features a durable female pipe thread and comes with a sealing membrane for leak prevention. Designed for a 2-1/4" hole, it’s perfect for fresh water and holding tanks in your RV. Built by Custom Plastics for reliable, long-lasting performance.
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1-1/2" FPT Flush Spinweld Fitting with Membrane (2 1/4" Hole Size) 

Custom Plastics Part # 57M (500496)  

Spin Weld Fitting for RV Fresh Water and Holding Tanks

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100% Authentic OEM Parts

Factory-Fresh OEM Parts — the same brands installed in new RVs straight from Elkhart. Genuine, name-brand components made to order — never generic, never outdated. Sourced directly from the original RV manufacturers for perfect fit and factory-level quality.

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