Hayward H-Series/ID/Low NOx/ED2 Header O-Ring Kit (FDXLFOR1930) infusionpool The Tecmark bath heater pressure

The Tecmark bath heater pressure switch is designed for compatible TBS-3000A applications where proper pressure sensing is part of safe and dependable heater operation

both control access and visual clarity can decline together

Reference replacement part number 25-4041-BI-TI when comparing against existing equipment or service documentation

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Hayward H-Series/ID/Low NOx/ED2 Header O-Ring Kit (FDXLFOR1930) infusionpool The Tecmark bath heater pressureThe Hayward header O ring kit is designed for compatible H Series, induced draft, Low NOx, and ED2 heater applications where the header sealing components need replacement. A kit like this is useful because it helps restore sealing at critical heater header connections, supporting cleaner assembly integrity and more dependable operation. This replacement is especially useful when the original O rings are flattened, brittle, cracked, or leaking after