Gaskets for heat exchangers are critically important elements, the elasticity and quality of which directly determine the integrity of the entire system. It is the gaskets that ensure the separation of circuits and prevent the mixing of working media. Using high-quality seals allows for maintaining stable operating pressure, avoiding emergency equipment shutdowns, and minimizing costs for unscheduled service.
Materials and types of gaskets
To ensure reliable sealing in various temperature and chemical modes, we offer gaskets made of different types of elastomers:
EPDM (Ethylene Propylene Diene Monomer). The most common material for heating systems, hot water supply, and steam. Withstands temperatures up to 150-170°C and is resistant to aging and water exposure.
NBR (Nitrile Butadiene Rubber). The optimal solution for working with oils, fats, petroleum products, and water. It has high mechanical resistance but a limited temperature range (up to 110-130°C).
HNBR (Hydrogenated Nitrile). An improved version of NBR, allowing operation at higher temperatures and mechanical loads while maintaining resistance to aggressive environments.
FKM / Viton (Fluoroelastomer). Intended for extreme conditions: aggressive acids, alkalis, high temperatures, and specific chemical reagents where ordinary rubber quickly loses its properties.
In addition to the material, gaskets differ in the type of attachment to the plate: glued (Glued) or clip-on (Clip-on/Sonder-lock), which determines the convenience of their replacement during maintenance.
When it is necessary to buy new gaskets
Replacing gaskets in a heat exchanger is a mandatory part of routine maintenance. The need for new components arises in the following cases:
Loss of elasticity (“hardening”). Due to constant thermal exposure, the rubber becomes brittle, leading to microcracks and leaks through the frame.
Chemical degradation. Incompatibility of the gasket material with the working medium causes swelling or dissolution of the gasket, which leads to the mixing of media.
Scheduled maintenance. During complete disassembly of the heat exchanger for mechanical cleaning, replacement of the entire gasket pack is often recommended, as old gaskets may not return to their original shape upon re-tightening.
Leaks at startup. The occurrence of drip leaks after a long system downtime often indicates residual deformation of the elastomer.
Professional selection and compatibility
The configuration of gaskets is individual for each heat exchanger model: they differ in channel shape, the presence of distribution zones, and the profile of the seating area. Even a slight discrepancy in thickness or geometry will lead to depressurization of the unit under pressure.
For accurate selection, ANKOR TEPLOENERGO specialists only need to receive a photo of the nameplate or the name of the unit model from you. Our engineers will select gaskets that are 100% compatible with your plates and match your technical process. We supply components both for our own heat exchangers and for brands like Alfa Laval, Sondex, Kelvion (GEA), Danfoss, and others.
Why you should buy gaskets from us
ANKOR TEPLOENERGO focuses on the long-term reliability of your equipment. By choosing us, you get:
Certified quality. We use materials that have passed testing for resistance to pressure and temperature.
Stock availability. We maintain a large stock of gaskets for the most popular models, which allows for shipping orders in the shortest possible time.
Expert consultation. We will help determine if the selected material (e.g., EPDM or NBR) is suitable for your new operating parameters.
If you are looking for where to buy quality gaskets for heat exchangers or need help identifying a model — contact our company specialists. We will help ensure the reliable operation of your energy system.
