# Thermal paste QOLTEC 51655 — thermal conductivity 5.15 W/m·K, 1 g, grey

**URL:** https://aio.lv/en/product--qoltec-51655--767847
**Data updated:** 2026-03-07 10:54 (EET)
**Category:** Thermal Paste
**Manufacturer:** QOLTEC
**Manufacturer code:** 51655
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 5.99 €
**Prices and availability valid until:** 2026-07-09 23:59
**Price without VAT (21%):** 4.95 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--qoltec-51655--767847

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 29.06.2026 | free |
| Pickup points | 02.07.2026 | 1.99 EUR |
| Courier delivery to door | 02.07.2026 | 4.99 EUR |

## Summary description

QOLTEC 51655 is a grey thermal paste for improving heat transfer between electronic components and heatsinks. It has thermal conductivity of 5.15 W/m·K, thermal resistance 0.004 °C/W and comes in a 1 g package. Suitable for CPUs, GPUs, power transistors and other small-scale cooling interfaces where precise application and low thermal resistance are required.

## Long description

QOLTEC 51655 is a grey thermal paste designed to improve heat transfer between electronic components and heatsinks. With a thermal conductivity of 5.15 W/m·K and low thermal resistance of 0.004 °C/W in a compact 1 g package, it is intended for small-scale cooling interfaces where precise application and low thermal resistance are required. The compound is electrically insulating while providing efficient thermal conduction, fills micro-gaps between a processor and cooling base, and is formulated for long-term stability without rapid degradation of properties.
Advantages
The paste combines relatively high thermal conductivity with electrical insulation, enabling safe use on components where conductive pastes are not suitable. Its grey, non-runny consistency makes it easy to apply accurately in small amounts, reducing waste and ensuring consistent thermal contact. Low thermal resistance and stable formulation support sustained heat transfer over prolonged use, and the small 1 g tube is convenient for targeted maintenance or single-component applications.
Suitable for
 CPUs and laptop processors in repair or maintenance tasks
 GPUs and graphics card cooling interfaces
 Power transistors and discrete semiconductor devices
 Small heatsinks and embedded electronics with limited contact area
Key specifications
 Thermal conductivity: 5.15 W/m·K
 Thermal resistance: 0.004 °C/W
 Net weight: 1 g (0.001 kg)
 Colour: Grey
 Electrical characteristic: electrically insulating (non-conductive)
 Consistency: easy-to-apply paste suitable for fine application
How to use
Clean contact surfaces thoroughly to remove old paste, dust and grease before applying QOLTEC 51655. Apply a small, even amount of thermal paste onto the center of the component heat spreader or heatsink mounting area; a thin, continuous layer is sufficient because the compound is formulated to fill micro-gaps under mounting pressure. Mount the heatsink or cooler and secure it with even pressure to spread the paste into a uniform interface. If excess material squeezes out, remove it carefully with a lint-free cloth and appropriate solvent. Use the 1 g package for one or a few precise applications rather than bulk rework.
Usage recommendations
Store the paste in a cool, dry place and ensure the cap is tightly closed after use to maintain consistency. For best thermal performance, avoid applying excessive amounts; too thick a layer can reduce heat transfer efficiency. Replace thermal paste during major cooling maintenance or whenever thermal interface degradation is suspected based on temperature monitoring.

## Specifications

### Features

| Feature | Value |
|---|---|
| Product colour | Grey |
| Thermal resistance | 0.004 °C/W |
| Thermal conductivity | 5.15 W/m·K |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.001 kg |

### Packaging data

| Feature | Value |
|---|---|
| Quantity per pack | 1 pc(s) |

## FAQ

### How much does the Thermal paste QOLTEC 51655, 5.15 W/m·K, 1 g cost, and is it available for purchase?

The price is 5.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 10 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 29.06.2026 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 QOLTEC 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 QOLTEC 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

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: thermal conductivity, weight, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

### Where can I download the instructions for Thermal paste QOLTEC 51655, 5.15 W/m·K, 1 g?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/767847/56507619_large.webp