Since the 80s, seals have been applied to automobiles, doors and windows, cabinets, refrigerators, containers and other industries. According to the requirements of different industries, we have developed unique automotive seals, mechanical seals, door and window seals and other products. The following small series for everyone to introduce the relevant knowledge of rubber seals.
Rubber seal specifications:
Marine seals: 15*15mm, 15*20mm, 15*25mm, 15*30mm, 15*35mm, 15*40mm, 15*45mm, 20*20mm, 20*25mm, 20*30mm, 20*35mm, 20* 40mm, 20*45mm, 20*50mm, 25*25mm, 25*30mm, 25*35mm, 25*40mm, 25*45mm, 30*30mm, 30*40mm, 30*50mm,
Fluoro rubber strip: 6mm/7/8/10/12/14/15/16/20
Sealing rubber strip: 5/6/8/10/12/14/16/18/20/25/30MM
Rubber Seal Properties:
Modified PVC strip
The price is relatively low, because the quality is different, the price is generally between 6,000 yuan 15,000 yuan / ton. Due to the use of waste materials, substitute plasticizers and high filling amount, the low-end products have poor elasticity of the rubber strips, are easy to harden, have a smell of smell, and are easy to migrate to yellow the frame materials and have a short service life. A small number of door and window companies still competing in the low-level price competition are still using it. Medium and high-end PVC strips can meet standard specifications and have a relatively long service life.
Because PVC products contain halogens and stabilizers contain heavy metals, it is not conducive to environmental protection. Therefore, foreign developed countries and domestic cities in Beijing and coastal cities all eliminate or restrict the use of PVC strips.
2. Thermoplastic EPDM seal
The seal is a new material developed in recent years based on the introduction of foreign technology and domestic independent research and development, mainly used for automotive door and window seals, in recent years for the construction of door and window seals. Its prominent advantages are:
1Performance and service life are equivalent to vulcanized EPDM seals.
2 Processing energy consumption is lower than that of vulcanized EPDM rubber (comparable to PVC).
3 does not contain heavy metals such as halogens and lead, plus a number of years can be recycled, in line with the requirements of green building materials.
4 The proportion is small (only 0.9-0.95) and the window rate is high. It seems that the purchase price is high and the actual use cost is low.
Product Features
1) Light weight, high tensile strength, and non-absorbent (instead of traditional three-oil four-felt, asphalt-used fir boards, etc.) Product environmental protection, construction is simple, anti-seepage, leak-proof, good water stop effect.
2) Corrosion resistance, aging resistance, high temperature resistance +80°C~-45°C, no flow, no deformation, no brittleness, long service life.
3) It has an independent open-cell structure. The appearance of the special joint plate is evenly distributed in honeycomb holes. It can be cemented tightly with cement/sealant without blending, adapting to natural expansion and contraction changes, and enhancing joints. Sealed expansion water stop effect.
3. Vulcanized EPDM rubber sealing strip
In terms of sealing elasticity, PVC rubber strips are greatly strengthened, but due to the need for microwave vulcanization, the processing energy consumption is high, which is usually more than 20 times that of PVC processing. Products can not be reused and environmental protection is not advocated by the state. product. In addition, the specific gravity of these products (1.4 or more) is equivalent to that of PVC (the proportion of low-end vulcanized EPDM rubber strips is larger). The window-opening rate is similar to that of PVC strips, and the use cost is relatively high. Door and window companies are difficult to accept.
The above is the introduction of knowledge about rubber seals by Xiaobian. Please pay attention to Qijia Information for more practical knowledge.
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