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Rubber, TPE & PTFE Parts Provider | Kesaria
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Diaphragms

Rubber Diaphragms are flexible seals that prevent unwanted transmission of substances between two places. These substances can be liquids, gases, or solutions. The flexible nature of this diaphragm allows pressure effects to cross the barrier but not the material being contained. Diaphragms are also used to protect a process fluid from the pressure sensor. They are characteristically tough & dynamic and essential in many flow control applications. Diaphragms can be manufactured to suit a wide variety of applications, which can be found in all sections of Industry.

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Category: Rubber
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  • Description
  • Material Selection Guide
Description
Rubber Diaphragm has wide applications include Electrical & Pneumatic Control Valves, Pressure Regulators, High-Pressure Pump, Gas Regulators, Pressure Relief Valve, etc. Diaphragm Materials range is NBR, SILICON, EPDM, NEOPRENE however Exact material specifications should be clarified by our engineers, as chemical and physical properties of grommets can differ based on manufacturing technique & application.
Rubber diaphragms are flexible membranes that act as seals, preventing the transfer of substances between two chambers. They are widely used across various industries, including:
  1. Pumps and Valves: Essential in pumps, valves, and actuators to control fluid flow and transfer.
  2. Automotive: Found in carburetors, gas control systems, valve equipment, and fuel pumps.
  3. Aerospace: Utilized in a range of aerospace applications.
  4. Oil and Gas: Applied in oil and gas systems for sealing and flow regulation.
  5. Medical Instrumentation: Used in medical devices to ensure precise control and sealing.
  6. Breathing Apparatus: Integral in breathing apparatus to maintain safe air flow.

Rubber diaphragms are versatile, flexible membranes designed to act as seals that prevent the transfer of substances between two chambers. They are essential in a variety of industries: in pumps, valves, and actuators for fluid control; within automotive systems such as carburetors and fuel pumps; across aerospace applications; in oil and gas systems for sealing and flow regulation; in medical devices for precise control and sealing; and in breathing apparatus to ensure safe airflow.

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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