The Raw Material of Door and Window Seals - Rubber, Do You Understand?

Rubber is a highly elastic, insulating, impermeable, and airtight material made from the latex extracted from rubber trees, rubber grass, and other plants. It is a highly elastic polymer compound. Rubber can be classified into two types: natural rubber and synthetic rubber.

Natural rubber is processed from the latex extracted from rubber trees, rubber grass, and other plants. Synthetic rubber, on the other hand, is obtained through the polymerization reaction of various monomers. Rubber products are widely used in various industries and aspects of life.

Rubber can be further classified into two categories: general-purpose and special-purpose, based on its usage. It is an insulator and not easily conductive. However, when exposed to water or different temperatures, it may become conductive. Conductivity refers to the ease of electron conduction within the molecules or ions inside a substance.

Door and window seals - Ethylene Propylene Diene Monomer (EPDM)

EPDM is a terpolymer of ethylene, propylene, and non-conjugated diene monomers. Its main characteristic is its excellent resistance to oxidation, weathering, and corrosion. As EPDM rubber belongs to polyolefins, it has excellent vulcanization properties.

Among all rubbers, EPDM has the lowest specific gravity, allowing it to absorb a large amount of fillers and oils without significantly affecting its properties.

EPDM rubber has a wide range of applications, mainly in the fields of building construction, electrical cables, and the automotive industry. In building construction, it is primarily used for single-layer waterproofing membranes on roofs. In electrical cables, it is used for input lines in residential and commercial buildings, building wires, mining cables, nuclear power plant wires, automotive ignition wires, control and signal cables, etc. In the automotive industry, it is mainly used for tires and non-tire components of cars, trucks, and buses, including radiator and heating hoses, seals, rubber belts, components of the body and chassis, rain strips, floor mats, and bellows.

Seal Quality and Testing When Sweebond tests its products, it not only checks the rubber's high-temperature resistance and cold resistance but also conducts tests on the following properties.

Stringent Quality Control

Shore hardness testing; tensile strength and elongation at break testing; hot air aging testing; compression permanent deformation testing; low-temperature brittleness testing; brake fluid resistance testing; coolant resistance testing; water resistance testing; detergent resistance testing; tear strength testing; ozone resistance testing; abrasion resistance testing; pollution resistance testing; flexural resistance testing.

Sweebond implements stringent quality control measures, eliminating products that do not meet the standards, ensuring peace of mind for consumers. Starting from the source, Sweebond standardizes the production process, strengthens the quality of inspection personnel, and adopts advanced product inspection equipment to enhance the management of testing work. This improves the quality of products and contributes to the rubber industry in our country.