# Hardtube fitting OPTIMUS 12 mm, silver — single compression connector for rigid cooling tubes

**URL:** https://aio.lv/en/product--optimus-op-fit-hard-12mm-silver-single--11866879
**Data updated:** 2026-03-09 17:44 (EET)
**Category:** CPU Coolers & PC Cooling Systems
**Manufacturer:** OPTIMUS
**Manufacturer code:** OP-FIT-HARD-12MM-SILVER-SINGLE
**EAN:** 850015187278
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 20.49 €
**Prices and availability valid until:** 2026-08-08 23:59
**Price without VAT (21%):** 16.93 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--optimus-op-fit-hard-12mm-silver-single--11866879

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 30.07.2026 | free |
| Pickup points | 04.08.2026 | 1.89 EUR |
| Courier delivery to door | 04.08.2026 | 4.99 EUR |

## Summary description

OPTIMUS hardtube fitting for 12 mm rigid cooling tubes in silver finish. Single compression-style connector designed to join or route hard tubing in liquid cooling loops. Compatible with 12 mm outer-diameter hard tubes; used for secure, leak-resistant connections in PC water cooling systems, custom loops, and radiator or component fittings where rigid tube routing is required.

## Long description

OPTIMUS hardtube fitting for 12 mm rigid cooling tubes in a silver finish is a single compression-style connector designed to join or route hard tubing in liquid cooling loops. It is compatible with rigid tubes that have a 12 mm outer diameter and provides a compact, metal-bodied connection point for directing coolant between components. The fitting is intended for use in PC water cooling systems, custom loops, and radiator or component terminations where a secure, neat, and low-profile junction is required.
Advantages
The single compression design simplifies installation of 12 mm hard tubes by providing a straightforward clamping mechanism that secures the tube without requiring additional adapters. Its metal construction and silver finish offer mechanical stability and a neutral aesthetic that integrates with a wide range of system builds. The fitting is engineered to provide a leak-resistant joint when installed correctly, helping maintain loop integrity and consistent coolant flow.
Suitable for
 Joining two 12 mm outer-diameter rigid cooling tubes in a liquid cooling loop
 Routing hard tubing between radiator, pump, reservoir, and water blocks
 Making compact turns or transitions in custom PC water cooling builds
 Replacing or upgrading existing rigid-tube connectors in a system
Key specifications
 Compatibility: rigid cooling tubes with 12 mm outer diameter
 Connection type: single compression-style connector for hard tubing
 Material: metal body with silver finish (visual and mechanical durability)
 Seal method: compression clamping for leak-resistant joint when installed correctly
 Typical use environment: PC liquid cooling systems and custom loops
How to use
Prepare tube ends by cutting them square and deburring to ensure a smooth mating surface. Slide the compression collar or nut over the tube, insert the tube fully into the fitting until it seats, then tighten the compression collar to the manufacturer-recommended torque so the tube is clamped without deforming. Verify alignment of connected components before final tightening. After assembly, pressure-test the loop or run the system while monitoring for leaks and recheck connections after an initial run-in period.
Usage recommendations
Use only rigid tubing with the specified 12 mm outer diameter and ensure tube ends are clean and free of chips. Tighten the compression collar evenly and avoid over-tightening to prevent tube damage. Perform leak testing after installation and periodically during maintenance. Combine with compatible fittings, gaskets, and mounting practices recommended for PC liquid cooling systems.

## FAQ

### How much does the Hardtube fitting OPTIMUS 12 mm, silver cost, and is it available for purchase?

The price is 20.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 30 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 30.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All OPTIMUS products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized OPTIMUS service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/11866879/67271621_large.webp