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Rubber, TPE & PTFE Parts Provider | Kesaria
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Bellows

Rubber Bellows are an expandable/collapsible component to protect foreign particles. The bellow material should be well suited with outside (exposed to Atmosphere & ozone resistance) & inside conditions (Oil, grease & lubricants). The rubber bellows are a very important component of automobiles, especially the steering system of cars. Designed to keep dirt and debris out of the steering rack, rubber bellow is a cylindrical vessel that comes in a large variety of sizes, shapes, construction, and elastomer coated fabrics/ rubbers to suit diverse application requirements of vehicles.

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Category: Rubber
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  • Description
  • Material Selection Guide
Description

Due to different annular convolutions, bellows are easily extensible & compressible and are appreciated for providing an excellent cushioning effect.SBR, Neoprene, NBR, Ethylene Propylene Diene Monomer (EPM, EPDM), etc.

Rubber bellows are widely used for transporting liquids, gases, or granular materials across various temperature ranges. They are commonly found in applications such as pipelines, automotive systems, HVAC, sewage disposal, and water treatment.
When designing rubber expansion bellows, consider the following factors:
  • Pipeline Diameter and Medium: The size of the pipeline and the type of substance being conveyed.
  • Temperature and Pressure Ratings: The required specifications for temperature and pressure.
  • Movement Capabilities: The necessary flexibility and range of motion.
  • Material and Standards: The material for the end flanges and the relevant drilling specifications.
Material Selection Guide
MATERIAL NR SBR NBR CR EPDM HNBR ACM CSM SILICONE FKM (VITON)
HARDNESS RANGE (SHORE A) 40-90 35-90 40-90 40-80 40-90 40-90 40-80 40-80 30-80 50-90
HIGH TEMP oC 100 120 130 130 150 150 180 150 230 225
LOW TEMP oC -50 -55 -45 -40 -50 -45 -25 -40 -60 -15
STEAM F F F P G G P E E E
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E= EXCELLENT; G= GOOD; F= Fair; P= Poor; A=Available, NA= Not Available This guide is intended for general reference Only. The materials listed are the most commonly used. There are numerous compound variations designed for specific applications for which please forward details to our engineers for recommendation.

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