The sealing rubber of the double-glazed window is an important part of the window that affects its efficiency. to ensure no air penetration, preventing water and steam from entering between the glass walls; The frames or sashes of a double-glazed window must be fitted with a special type of rubber seal.
A rubber seal is used to secure the two panes together, creating an air-permeable barrier when the window is in the closed position. There are different types of rubber seals that are different depending on the intended role and environment, their type and composition, here we will examine some of them.
PVC foam sealing rubber is easy to install
Silicone sealant
The most common type of double-wall rubber seal is made of a silicone-based sealant. It is a multi-purpose sealant designed with high flexibility and long life. This sealant is resistant to cracking, abrasion and most chemicals, while providing good adhesion to most substrates and is ideal for use on window frames. Silicone’s flexibility and insulating properties make it a popular choice for use in a variety of applications, including glazing, framing and weatherproofing.
Features of silicone sealant
Silicone rubber is a type of elastomer that consists of a network of alternating silicon and oxygen atoms. It is a popular material for sealing and insulation applications in the automotive, aerospace and medical industries. Silicone rubber is waterproof and resistant to acids and alkalis, making it ideal for use in a wide variety of engineering applications where resistance to harsh environments is required.
It is also non-flammable, making it a safe and cost-effective choice. In addition to water, silicone rubber is resistant to ozone, sunlight, and UV rays, as well as most oils, fats, ketones, and alcohols. This combination of properties makes it suitable for use in a wide range of industries.
One of the most important features of butyl sealing rubber is its durability.
Butyl rubber sealant
Butyl rubber sealants are also popular in double glazing applications. Butyl rubber is an elastomeric material that is softer and more flexible than silicone sealant. Butyl is resistant to UV radiation and most chemicals, making it a good choice for windows in areas exposed to strong sunlight and high humidity. It is also used in making weatherproof tires, washers, window frames and sealants.
Features of butyl rubber sealant
Butyl sealing rubber is a unique type of rubber that has various useful features. Butyl rubber, which consists of chlorinated isobutylene-isoprene rubber, is very durable and resistant to ozone, oxidation, etc. This means that it can maintain its physical properties and perform its intended purpose for a long time without deterioration.
Butyl rubber is also known for its excellent adhesion ability and adheres well to most surfaces including metal, concrete, wood and other surfaces. Finally, butyl rubber has excellent heat resistance properties. Butyl rubber withstands up to 250°F and is ideal for applications that may require exposure to higher temperatures.
EPDM sealant
EPDM sealant is another type of rubber sealant used for double-glazed window frames. These sealants have a wide range of properties that make them suitable for various applications including roofing, sealing, framing and glazing. In terms of flexibility, adhesion and durability, they are superior to butyl rubber and are resistant to ozone, humidity, sunlight and extreme temperatures.
Features of EPDM sealant
EPDM sealing rubber is a type of elastomer from the family of ethylene and propylene rubber. It is a durable material with excellent tensile strength. In addition, rubber is temperature resistant and can withstand temperatures between -50°C and +150°C without significantly affecting its physical properties.
EPDM rubber is also very resistant to common oils, solvents and acids. In addition, EPDM is very popular due to its waterproofing properties. Its rubber material consists of a closed cell structure that does not absorb any moisture. This means that this waterproof rubber will maintain its performance for many years. This rubber can reduce sound transmission and air leakage, making it an ideal option for sealing doors and windows.
Finally, PVC foam sealants are widely used in the construction of double-glazed windows.
PVC foam sealants
PVC foam sealants are a cost-effective alternative to other types of rubber sealing and are designed to absorb sound, reduce heat transfer and provide insulation. They are resistant to UV rays, moisture and temperature changes and are strong shock absorbers, making them ideal for use in applications that require high levels of sound insulation.
Features of PVC foam sealants
PVC foam sealing rubber is produced by mixing dry and powdered PVC resin with a small amount of softener and other additives including physical blowing agents, pigments and stabilizers. The PVC foam material is then extruded and can be rolled into thin sheets or cut into gaskets, pipes, hoses and other shapes. PVC foam is known for its light weight and exceptional flexibility, which allows it to be easily cut and molded for a variety of specific application needs.
This plasticized PVC foam rubber is very suitable for sealing due to its cellular structure consisting of closed cells with equal spacing. And also by trapping air, this material acts as an excellent thermal and acoustic insulation material. In addition, PVC foam sealants perform well in temperatures between -40 and 158 degrees Fahrenheit.
Another main advantage of this material is its chemical resistance. PVC foam sealing rubber is highly resistant to acids, alkalis and other harsh chemicals.