Burhani Seal CentreSince 1988
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Diaphragms

Rubber, fabric-reinforced, PTFE and Santoprene diaphragms for valves, pumps and actuators, including spares for AODD pumps.

Showing 1–11 of 11 products

  • PTFE Diaphragm — PTFEDiaphragms

    PTFE Diaphragm

    A diaphragm for air-operated double-diaphragm (AODD) pumps, which flexes back and forth to move the liquid. Made in PTFE, with very low friction and resistance to almost every chemical.

    MaterialPTFE

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  • EPDM Diaphragm — EPDMDiaphragms

    EPDM Diaphragm

    A diaphragm is a flexible membrane that separates two spaces and passes pressure or movement between them, in valves, pumps and actuators. Made in EPDM, which suits water, steam, weather and ozone but not mineral oil.

    MaterialEPDM

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  • NBR Diaphragm — NBRDiaphragms

    NBR Diaphragm

    A diaphragm is a flexible membrane that separates two spaces and passes pressure or movement between them, in valves, pumps and actuators. Made in nitrile (NBR), which handles mineral oils, greases and water well.

    MaterialNBR

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  • Diaphragm with BoltDiaphragms

    Diaphragm with Bolt

    A diaphragm is a flexible membrane that separates two spaces and passes pressure or movement between them, in valves, pumps and actuators.

    ApplicationDiaphragm valves

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  • EPDM Canvas Diaphragm — EPDM with canvasDiaphragms

    EPDM Canvas Diaphragm

    A diaphragm is a flexible membrane that separates two spaces and passes pressure or movement between them, in valves, pumps and actuators. Material: EPDM with canvas.

    MaterialEPDM with canvas

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  • EPDM Nylon Canvas Diaphragm — EPDM with nylon canvasDiaphragms

    EPDM Nylon Canvas Diaphragm

    A diaphragm is a flexible membrane that separates two spaces and passes pressure or movement between them, in valves, pumps and actuators. Material: EPDM with nylon canvas.

    MaterialEPDM with nylon canvas

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  • AODD Pump DiaphragmDiaphragms

    AODD Pump Diaphragm

    A diaphragm for air-operated double-diaphragm (AODD) pumps, which flexes back and forth to move the liquid.

    ApplicationAir-operated double-diaphragm pumps

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  • Santoprene Diaphragm — SantopreneDiaphragms

    Santoprene Diaphragm

    A diaphragm for air-operated double-diaphragm (AODD) pumps, which flexes back and forth to move the liquid. Made in Santoprene, a tough thermoplastic rubber with good flex life.

    MaterialSantoprene

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About diaphragms

A diaphragm is a flexible membrane that separates two spaces and passes pressure or movement between them. We supply rubber diaphragms in EPDM and nitrile, canvas-reinforced diaphragms, replacement diaphragms for diaphragm and deluge valves, and PTFE and Santoprene diaphragms for air-operated double-diaphragm (AODD) pumps.

Send the old diaphragm, a photo with sizes, or the valve or pump make and model, and we'll match it.

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Common questions

Which diaphragm material is right for my pump?

PTFE resists almost every chemical, Santoprene gives long flex life for general duty, EPDM suits water and many acids, and nitrile suits oils.

Why use a canvas-reinforced diaphragm?

The fabric layer stops the rubber stretching under pressure, so the diaphragm keeps its shape and lasts longer in valves and actuators.

How do I order a valve diaphragm?

Tell us the valve make, size and type, or send the old diaphragm. Valves of the same size from different makers often take different diaphragms.

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