# Thermal paste QOLTEC 51653, thermal conductivity 4.63 W/m·K, 30 g, grey

**URL:** https://aio.lv/en/product--qoltec-5901878516530--11454170
**Data updated:** 2026-03-07 20:15 (EET)
**Category:** Thermal Paste
**Manufacturer:** QOLTEC
**Manufacturer code:** 5901878516530
**EAN:** 5901878516530
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 24.49 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 20.24 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--qoltec-5901878516530--11454170

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.89 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

QOLTEC 51653 is a grey thermal paste designed to improve heat transfer between components and heatsinks. It has a thermal conductivity of 4.63 W/m·K and thermal resistance of 0.0087 °C/W, supplied in a 30 g tube (net weight). Suitable for CPUs, GPUs, power semiconductors and other electronic components requiring effective thermal interface material.

## Long description

QOLTEC 51653 is a grey thermal paste formulated to improve heat transfer between electronic components and heatsinks. With a thermal conductivity of 4.63 W/m·K and thermal resistance of 0.0087 °C/W, the compound reduces interface thermal impedance by filling micro-gaps and surface irregularities. Supplied in a 30 g tube, this thermal paste is suitable for CPUs, GPUs, power semiconductors and other components that require an effective thermal interface material. The paste is easy to apply, remains stable over time and maintains its thermal properties during extended use.
Advantages
The paste combines relatively high thermal conductivity with electrical insulation characteristics, enabling efficient heat transfer without creating conductive paths. Its smooth, grey consistency spreads evenly across contact surfaces to minimize trapped air pockets and improve contact between the component and cooler. Packaged in a 30 g tube, it provides enough material for multiple applications and controlled dispensing during application.
Suitable for
 CPU to heatsink thermal interface
 GPU cooling solutions
 Power semiconductor and MOSFET heat transfer
 Heatsinks in small-form-factor electronics and DIY projects
Key specifications
 Thermal conductivity: 4.63 W/m·K
 Thermal resistance: 0.0087 °C/W
 Net weight: 30 g
 Colour: grey
 Form: paste for thermal interface application
How to use
Clean contact surfaces thoroughly to remove old paste, dust and oils using isopropyl alcohol or a suitable solvent, then allow surfaces to dry. Apply a small, even amount of QOLTEC 51653 to the centre of the component surface and spread thinly and uniformly when mounting the heatsink, or use a pea-sized drop and allow the pressure of the heatsink to spread the paste. Tighten the cooler according to the manufacturer's instructions to ensure even contact. Remove and reapply thermal paste if components are disassembled or if thermal performance degrades.
Usage recommendations
Use in well-ventilated areas and avoid contact with skin and eyes. Store the tube capped at room temperature away from direct sunlight and extreme heat. For optimal results, ensure mounting surfaces are flat and free of contaminants and follow the cooling system manufacturer's torque or mounting sequence guidance.

## 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 | 0.03 kg |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 440 g |

## FAQ

### How much does the QOLTEC 51653 thermal paste 30 g cost, and is it available for purchase?

The price is 24.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 320 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 15.07.2026 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 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.

## Image

https://aio.lv/img/cache/product/11454170/66141829_large.webp