Hayward Diaphram Gasket | ECX5000G

Hayward Products SKU: HPPECX5000G
Hayward Diaphram Gasket | ECX5000G - Pool Filter Parts - img - 1

Hayward Diaphram Gasket | ECX5000G

Hayward Products SKU: HPPECX5000G
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Hayward ECX5000G Diaphragm Gasket (New Style / No Screw Holes) for Perflex Extended-Cycle D.E. Filters

The Hayward ECX5000G is an OEM diaphragm gasket used in Hayward Perflex extended-cycle D.E. filters. This gasket is the flexible sealing diaphragm that helps the filter’s internal bump/cleaning mechanism operate correctly while maintaining a tight seal to prevent bypassing and leakage.

Fits / Compatibility

  • Hayward Perflex Extended-Cycle D.E. filter models including EC40AC and EC50AC
  • Also commonly listed for EC-40C and EC-50C series filters
  • Often referenced for additional Perflex/EC-series variants such as EC40C90, EC50C90, and related configurations (match your filter model/parts diagram)

Key Features

  • New style diaphragm gasket commonly described as without screw holes
  • Made from durable, chemical-resistant rubber for long service life
  • Helps maintain proper internal sealing and efficient filtration performance

Common Reasons to Replace

  • Water leaking at the filter’s internal diaphragm area
  • Filter performance drop due to internal bypassing (worn or torn diaphragm)
  • Cracked, stiff, swollen, or torn gasket discovered during filter service
  • Preventive replacement during a Perflex internal rebuild

Installation Notes

  • Turn off the pump and relieve filter pressure before opening the tank.
  • Clean sealing surfaces thoroughly before installing the new diaphragm gasket.
  • Inspect related internal parts (bump mechanism components, O-rings, and sealing surfaces) while the filter is open.
  • After reassembly, restart the system and check for leaks during the first run cycle.

Specs (Quick Reference)

  • Part Number: ECX5000G
  • Part Type: Diaphragm Gasket
  • Material: Rubber
  • Common Cross-References: 305173, 4820-08, G-461, HAY-051-1507

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Maintenance Tips

  • Maintain balanced water chemistry to reduce rubber swelling and premature gasket wear.
  • If you notice D.E. returning to the pool, inspect internal seals/diaphragm condition during the next service interval.
  • When opening a Perflex filter, clean all sealing surfaces—grit and old D.E. can prevent a proper seal.
  • Follow the recommended bump/cleaning routine and recharge the correct amount of D.E. after cleaning.
Questions about returns? View our return policy.

Hours Of Operation: 

Monday - Friday: 8:00 am to 4:00 pm Phoenix Time

Saturday and Sunday: Closed

  • Orders costing more than  $300 WILL be required to have signature confirmation upon delivery.
  • Handling time is typically only 1 day.   
  • Any item ordered after 1pm Phoenix time, may not ship same-day.
  • Call us if you require expedited shipping and we can give you quotes based on your needs.

Return Policy:

  • All products, except as noted below, are eligible for return up to 30 days after receipt of item.
  • For returns, an RMA form must be filled out HERE or customers can call for additional help.
  • Shipping costs will be deducted from all returned items.
  • Any item that is missing accessories, original packaging, or is not returned in the same condition that it was received in, may be subject to a re-stocking fee up to 100% based on the condition we receive it in. 
  • Items broken, damaged, or inoperable due to installer error will not be refunded.
  • Fill out the return form or give us a call to obtain an RMA and return shipping label.
  • There are no returns on the Pentair Colorsync 618031
  • No returns on pool cleaners.
  • No returns on opened seals and o-rings.
  • No returns on capacitors.
  • If a light is returned because it "doesn't work" and it tests fine, the cost to ship and a re-stocking fee will be deducted from the refund.
  • All products denied upon arrival at customers house WILL be charged the cost to ship.
  • Visa Gift Card Promotions: Gift cards are sent within 14 days of the order. When accepting the Visa Gift card, you agree that if your order is returned or refunded, this amount will be deducted from the refunded amount. All Visa Gift cards are sent via email in an E-Gift Card format and are non refundable.
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