AppliaFit Diaphragm Gasket for Hayward ECX5000G, 2-Pack Compatible with EC40/EC50 Filters, Heavy-Duty Seal

AppliaFit Diaphragm Gasket 2-pack replaces seal components in select Hayward Perflex Extended-Cycle DE filters to restore proper flow and prevent leaks.

These two replacement diaphragm gaskets are crafted to fit Hayward ECX5000G assemblies and a range of Perflex Extended-Cycle DE filter models, offering an economical way to renew your pool filtration system without replacing the entire manifold. Constructed from heavy-duty materials, the gaskets are intended to withstand repeated installation and normal pool-use conditions while matching key Hayward part numbers for easy cross-reference.

Will these gaskets fit my Hayward Perflex EC50 or EC40 filter?

Yes. The AppliaFit diaphragms are designed to be compatible with several Hayward Perflex Extended-Cycle DE filter models, including EC40AC, EC50, EC50C, EC50A and EC50AE. Before ordering, compare your current part number or the physical shape of your diaphragm to ensure proper match.

• Compatible with Hayward ECX5000G assemblies.
• Works with model numbers EC40AC, EC50, EC50C, EC50A, EC50AE.
• Cross-references HAY-051-1507, EC-50C and EC-40C alternate part numbers.

How durable are these replacement gaskets and what are they made of?

The gaskets are manufactured from heavy-duty elastomer materials selected for resilience and repeated sealing performance. They resist compression set and typical pool chemicals under normal operating conditions, helping maintain a tight seal across multiple service cycles.

• Heavy-duty construction for long-lasting use.
• Engineered to retain shape and sealing capability over time.
• Suitable for routine pool environments when installed correctly.

How do I install these diaphragm gaskets in my filter system?

Installation typically involves removing the filter manifold or housing cover, extracting the old diaphragm, and pressing the new gasket into the same groove or seat. Tighten connections evenly to avoid pinching the gasket, and inspect for leaks during the first pressure cycle after reassembly.

• Shut off pump and relieve system pressure before starting.
• Remove old gasket and clean the seating area of debris and residue.
• Seat new gasket evenly and reassemble, checking for proper alignment.

Who is this product for? Pool owners and maintenance professionals who want an affordable, OEM-compatible spare part to repair or refresh Hayward Perflex Extended-Cycle DE filters will find these AppliaFit gaskets useful. They’re ideal for those familiar with basic filter service who prefer replacing individual wear components instead of full assemblies. Note: brand names and model numbers are used solely to indicate compatibility; packaging may vary.

• Includes two diaphragm gaskets per pack.
• Intended as replacement parts, not original Hayward-manufactured items.
• If unsure about fit, compare existing part numbers or consult a technician.