# Thermal paste QOLTEC 51651, thermal conductivity 4.63 W/m·K, 0.5 g, grey

**URL:** https://aio.lv/en/product--qoltec-51651--767843
**Data updated:** 2026-03-07 10:54 (EET)
**Category:** Thermal Paste
**Manufacturer:** QOLTEC
**Manufacturer code:** 51651
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 4.99 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 4.12 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--qoltec-51651--767843

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 30.06.2026 | free |
| Pickup points | 03.07.2026 | 1.99 EUR |
| Courier delivery to door | 03.07.2026 | 4.99 EUR |

## Summary description

QOLTEC 51651 thermal paste is a grey heat sink compound with thermal conductivity 4.63 W/m·K and thermal resistance 0.0087 °C/W. Supplied in a 0.5 g quantity, it is designed to improve heat transfer between electronic components and heatsinks, suitable for CPUs, GPUs, power modules and compact electronics requiring reliable thermal coupling.

## Long description

QOLTEC 51651 thermal paste is a grey heat-conductive compound formulated to improve heat transfer between electronic components and heatsinks. With a thermal conductivity of 4.63 W/m·K and a thermal resistance of 0.0087 °C/W, this 0.5 g syringe is designed for efficient thermal coupling in CPUs, GPUs, power modules and compact electronics where reliable dissipation is required. The paste fills microscopic gaps between mating surfaces, is electrically insulating, and remains stable over prolonged use without significant degradation of thermal properties.
Advantages
The compound combines relatively high thermal conductivity with electrical insulation, allowing safe use on components where electrical contact must be avoided. Its grey, smooth consistency spreads evenly across surfaces and reliably fills micro-gaps to reduce thermal resistance. The formulation is long-lasting and retains its thermal performance over time, while the small 0.5 g dose is convenient for single repairs or occasional reapplications. Application is straightforward thanks to a user-friendly syringe form factor.
Suitable for
 Thermal interface between CPUs and heatsinks in desktop or laptop repairs
 GPU heatsink assemblies in graphics cards or small form-factor systems
 Power modules and voltage regulators requiring thermal conduction without electrical contact
 Compact electronic devices and consumer electronics with limited cooling space
Key specifications
 Thermal conductivity: 4.63 W/m·K
 Thermal resistance: 0.0087 °C/W
 Net weight: 0.5 g (0.0005 kg)
 Colour: Grey
 Form: Paste supplied in a small applicator/syringe
 Electrical behaviour: Insulating (non-conductive)
How to use
Ensure both mating surfaces (processor and heatsink) are clean, dry and free of old thermal compound or contaminants. Apply a small, pea-sized amount of QOLTEC 51651 to the centre of the component surface, then mount the heatsink and secure it according to the device manufacturer's instructions; the pressure will spread the paste into an even layer. For larger surfaces or uneven contacts, a thin, uniform film may be spread with a suitable applicator before seating the heatsink. Avoid excessive application — a thin continuous layer provides the best thermal transfer.
Usage recommendations
Store the thermal paste at room temperature in a dry place and keep the applicator cap closed when not in use. Use personal protective gloves if skin contact is a concern and clean any excess paste from surrounding components to prevent contamination. Reapply when replacing or reseating heatsinks or if thermal performance degrades; for typical consumer devices this may be necessary after extended service life or when performing maintenance.

## Specifications

### Features

| Feature | Value |
|---|---|
| Product colour | Grey |
| Thermal resistance | 0.0087 °C/W |
| Thermal conductivity | 4.63 W/m·K |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.0005 kg |

### Packaging data

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

## FAQ

### How much does the QOLTEC 51651 thermal paste 4.63 W/m·K 0.5 g cost, and is it available for purchase?

The price is 4.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 6 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 30.06.2026 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 QOLTEC 51651 thermal paste 4.63 W/m·K 0.5 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/767843/56507617_large.webp