BSTOCK: PrimoFlex Advanced LRT Flexible Tubing - 3/8in. ID x 5/8in. OD (Two Foot Section) - Crystal Clear

BSTOCK: PrimoFlex Advanced LRT Flexible Tubing - 3/8in. ID x 5/8in. OD (Two Foot Section) - Crystal Clear
PFLEXA-58-BSTK In stock in Boise, ID
$1.99$4.99USDFree shipping over $125
Ships the same business day on orders placed before 2:00 PM MST. Overnight delivery available at checkout.
or ready to checkout now
Building your first loop? Plan the rest of it
Why buy it here
US warranty, handled in Boise
Claims are settled here, by the people who sold it to you.
Custom watercooling since 2002
PrimoChill, from Boise, Idaho.

About this part

PERFECT AS A SAMPLE OR COMPATIBILITY CHECK!

B stock items are items that did not pass our aesthetic quality standards. They may contain nicks, dents, or other cosmetic defects, but are fully functional. If you don't mind a little character and no retail packaging, these discounted items are just right for you! *Picture only reflects approximate color and not the actual quality you will be receiving which may have several cosmetic defects as stated above. All B Stock Sales FINAL. Returns not available on B Stock items. 

PrimoFlex™ Advanced LRT™ Tubing has been designed, formulated, and manufactured for today’s evolving standards in the PC water cooling industry. Advanced LRT™ has been carefully formulated to perform in a wide range of closed loop cooling systems, creating the most compatible water cooling tubing ever created.

LOW RADIUS TECHNOLOGY
PrimoChill’s proprietary blend of notably low durometer PVC and more rigid polymer resin provides PrimoFlex™ Advanced LRT™ with an unbeatable bend ratio and durability. PrimoFlex™ has been tested in exacting laboratory set-ups. This included tests with abrupt small radius bends and multiple directional changes. Advanced LRT™ tubing resisted both twisting and collapse in test results. This allows for tighter bends eliminating kinking that can cause cooling failures and reduction in system performance.

CLARITY IN SIGHT AND MIND
Smooth inner walls improve closed loop sanitation. Advanced LRT™ smooth surface inhibits particulate gathering or entrapment onto the tubing wall. This reduces the potential of bacterial growth and contamination. With this technology, Advanced LRT™ will keep your system looking and feeling as clean as the day it was installed..

Datasheet
Inner Diameter (ID)3/8in. ±.005
Outer Diameter (OD)5/8in. ±.015
Wall Thickness1/8in
This tubing is designed to work with 3/8in. x 5/8in. compression fittings or 3/8in. Barb w/ 5/8in. Clamp.
SKUPFLEXA-58-BSTK

What buyers said

Left by people who bought this part here. Compatibility reports are the useful ones — if you fitted it, say which board.

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Before you install it

This is a component, not an assembly — how it goes in depends on the loop it is joining. What does not change is the last step: leak test before power. Run the pump on a bench supply with the rest of the system unpowered. 24 hours is the standard, an hour is the minimum.

Custom water cooling is installed by you, at your own risk. We are not responsible for leaks, or for damage to your parts or system. If you're unsure at any step, ask before you power the loop.

Questions people ask about this part

Answers specific to PFLEXA-58-BSTK. If yours isn't here, ask — we'd rather talk you out of the wrong part than sell you one.

What does this part fit?
Compatibility for this part is listed in the compatibility notes on this page. Parts like this are machined to a specific hardware layout, so send us your exact model and we will confirm it against part number PFLEXA-58-BSTK before you order.
Is it in stock, and when will it ship?
Yes — in stock in Boise, Idaho. Orders placed before 2:00 PM MST on a business day ship the same day — we do not ship weekends or US holidays. Overnight delivery is available at checkout.
Can I return it if it turns out not to fit?
Yes. Returns are accepted within 30 days and are easy to start in the support center. Unopened items can be returned for store credit with no restocking fee; other returns carry a restocking fee, higher for items that have been installed or used. So we would rather check the fit with you first: send us the model and we will check it against this part.
Who handles the warranty?
PrimoChill covers this part for 1 year. Every warranty claim is handled directly by our support team, so you deal with us from start to finish.
Is shipping free?
Shipping is free on orders over $125 to addresses in the lower 48 US states.
Are printed instructions included?
No printed manual is included. Installation references are in the product gallery images, and the install guides on this site cover the process step by step.
Do I need anything else to use it?
Check the parts list above against what you already have. If you are building a loop from scratch, send us the full parts list and we will tell you what is missing before you order.

Ask us before you order

Send your exact hardware model and we'll confirm the right part before you spend $1.99 — or tell you honestly that this isn't the one.

Returns are accepted within 30 days and are easy to start in the support center. Unopened items can be returned for store credit with no restocking fee; other returns carry a restocking fee, higher for items that have been installed or used.

Ask about compatibility