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

CPISKU: 57M/500496
Added to catalog: March 17, 2020
Last product update: July 9, 2026 at 8:28 PM

Sale price$4.99
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Availability details
Elkhart RV Parts warehouse0 ready to ship
ERVP overstock warehouse0 available
This quantity is stocked at ERVP. See the delivery estimate below for the current expected window.
Delivery Estimate July 15 – July 19
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.

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 Genuine, name-brand components made to order — never generic, never outdated.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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