Goulds 5K256 / 5K522 Diaphragm Gasket

Goulds 5K256 / 5K522 Diaphragm Gasket

Weight	.1 lbs
Dimensions	9 × 9 × 1 in

Title	Quantity	Price Per Unit
Pre Cut Gasket 25 30 35 Rule	1 - 2	0% $13.50
Pre Cut Gasket 25 30 35 Rule	3 - 5	15% $11.48
Pre Cut Gasket 25 30 35 Rule	6 - 9	20% $10.80
Pre Cut Gasket 25 30 35 Rule	10 +	25% $10.13

DESCRIPTION
Goulds 5K256 / 5K522 — Diaphragm Gasket

The Goulds 5K256 / 5K522 diaphragm gasket is a high-quality replacement component designed for use in Goulds pump systems. This diaphragm gasket provides a reliable seal within the pump assembly, helping maintain proper pressure and system performance.

These part numbers are commonly used interchangeably, making this gasket a compatible solution for multiple Goulds pump configurations.

Manufactured to meet original specifications, the gasket ensures a precise fit and dependable performance in demanding environments.

Specs
- Dimensions: 1.687″ × 7.500″
- Material: Neoprene rubber, fabric-reinforced, 1/16″ thick, black
  (All of our diaphragm gaskets use highly reinforced neoprene unless otherwise specified.)
Cross-reference
- Goulds: 5K256 / 5K522
Leaking pump? While the pump’s apart, replace the shaft seal too — it’s the most common leak source.

Most Goulds GT Irri-Gator pumps that use the 5K256 / 5K522 diaphragm take the PS-100 shaft seal (confirm with your pump model). Pick your PS-100 variation (same footprint, different material) by water condition:
- Standard, clean water — PS-100 (100c)
- Salt or treated water, warmer temps — PS-100 CV (Viton)
- Heavy-use, commercial, or saltwater — PS-957 (premium carbon)
- High-chemical or hot water — PS-3866 (premium carbon + Viton)
- Sandy, gritty, or abrasive water — PS-100 CVSS (Silicon Carbide)
Not sure which material? See the full seal guide
Explore our full lineup of Pre-cut Gaskets.

Looking for more? Check out our Mechanical Seals, Pump Repair Kits , & Parts/Accessories

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SPECIFICATIONS

Cross References / Search Term Variations

Part number variations
Goulds 5K256 gasket
Goulds 5K522 gasket
Goulds 5K256 diaphragm gasket
Goulds 5K522 diaphragm gasket
5K256 gasket
5K522 gasket
Goulds gasket 5K256
Goulds gasket 5K522
Goulds 5K 256 gasket
Goulds 5K 522 gasket

Size / measurement variations
pump diaphragm gasket
pump gasket replacement
water pump gasket

Style variations
diaphragm gasket
pump gasket
Goulds pump gasket
water pump gasket

Material variations
rubber diaphragm gasket
pump sealing gasket
replacement gasket material

Disclaimer: Seal House USA provides aftermarket replacement parts. Any OEM names are used strictly for cross-reference. We are an independent supplier.