4. Gaskets
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Goulds 5K109 Diaphragm Gasket
Goulds 5K109 Diaphragm Gasket
Goulds 5K109 — Diaphragm Gasket
The Goulds 5K109 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.
Manufactured to meet original specifications, the 5K109 gasket ensures a precise fit and dependable performance in demanding environments.
Lower your cost per gasket with quantity-based pricing—discounts are automatically applied at checkout as your order quantity increases. See the pricing table above.
Specs
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Dimensions: 1.687″× 7.750″
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Material: Neoprene rubber, fabric-reinforced, 1/16″ thick, black
(All of our diaphragm gaskets use highly reinforced neoprene unless otherwise specified.)
Cross-reference: Goulds: 5K109
Leaking pump? Replace the gasket and shaft seal together — the shaft seal is the most common leak source.
Most Goulds GH and J-series jet pumps that use the 5K109 diaphragm typically take a 5/8″ Type 166 shaft seal, equivalent to Goulds 10K10:
- Standard, clean water — PS-680
- Salt, treated, warm, heavy-use, or commercial — PS-4240 (equivalent to 10K10)
Explore our full lineup of Pre-cut Gaskets.
Looking for more? Check out our Mechanical Seals, Pump Repair Kits , & Parts/Accessories
Have questions? Call us anytime-we’re here to help

Goulds 5K110 Diaphragm Gasket
Goulds 5K110 Diaphragm Gasket
Goulds 5K110 — Diaphragm Gasket
The Goulds 5K110 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.
Manufactured to meet original specifications, the 5K110 gasket ensures a precise fit and dependable performance in demanding environments.
Lower your cost per gasket with quantity-based pricing—discounts are automatically applied at checkout as your order quantity increases. See the pricing table above.
Specs
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Dimensions: 1.687″ × 8.937″
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Material: Neoprene rubber, fabric-reinforced, 1/16″ thick, black
(All of our diaphragm gaskets use highly reinforced neoprene unless otherwise specified.)
Cross-reference
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Goulds: 5K110 gasket
Leaking pump? Replace the gasket and shaft seal together — the shaft seal is the most common leak source.
Most Goulds GH and XSH jet pumps that use the 5K110 diaphragm typically take a 5/8″ Type 166 shaft seal, equivalent to Goulds 10K10:
- Standard, clean water — PS-680
- Salt, treated, warm, heavy-use, or commercial — PS-4240 (equivalent to 10K10)
Explore our full lineup of Pre-cut Gaskets.
Looking for more? Check out our Mechanical Seals, Pump Repair Kits , & Parts/Accessories
Have questions? Call us anytime-we’re here to help

Goulds 5K122 Diaphragm Gasket
Goulds 5K122 Diaphragm Gasket
Goulds 5K122 — Diaphragm Gasket
The Goulds 5K122 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.
Manufactured to meet original specifications, the 5K122 gasket ensures a precise fit and dependable performance in demanding environments.
Lower your cost per gasket with quantity-based pricing—discounts are automatically applied at checkout as your order quantity increases. See the pricing table above.
Specs
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Dimensions: 1.687″ × 9.937″
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Material: Neoprene rubber, fabric-reinforced, 1/16″ thick, black
(All of our diaphragm gaskets use highly reinforced neoprene unless otherwise specified.)
Cross-reference
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Goulds: 5K122 gasket
Explore our full lineup of Pre-cut Gaskets.
Looking for more? Check out our Mechanical Seals, Pump Repair Kits , & Parts/Accessories
Have questions? Call us anytime-we’re here to help

Goulds 5k162 / 5k557 Diaphragm Gasket
Goulds 5k162 / 5k557 Diaphragm Gasket
Goulds 5K162 / 5K557 — Diaphragm Gasket
The Goulds 5K162 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.
This part is also commonly referenced as 5K557, making it a compatible replacement across multiple Goulds pump configurations.
Manufactured to meet original specifications, the 5K162 gasket ensures a precise fit and dependable performance in demanding environments.
Lower your cost per gasket with quantity-based pricing—discounts are automatically applied at checkout as your order quantity increases. See the pricing table above.
Specs
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Dimensions: 1.687″ × 7.687″
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Material: Neoprene rubber, fabric-reinforced, 1/16″ thick, black
(All of our diaphragm gaskets use highly reinforced neoprene unless otherwise specified.)
Cross-reference
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Goulds: 5K162 gasket / 5K557 gasket
Working on a Goulds J-series pump? We build a complete rebuild kit for these pumps — this diaphragm together with the shaft seal and the guide vane seal ring, in one part number instead of three.
Goulds J+ / JS+ Repair Kit — J5, J7, J10, J15 and the S models
Buying the parts separately? While the wet end is apart, replace the shaft seal and matching spacer ring too — the shaft seal is the most common leak source. Most Goulds J-series pumps that use the 5K162 gasket take a 5/8″ Type 166 shaft seal, equivalent to Goulds 10K10:
- Standard, clean water — PS-680
- Salt, treated, warm, heavy-use, or commercial — PS-4240 (equivalent to 10K10)
- Also in this rebuild — 5K231 Spacer Ring (guide vane seal ring, same pump)
Explore our full lineup of Pre-cut Gaskets.
Looking for more? Check out our Mechanical Seals, Pump Repair Kits , & Parts/Accessories
Have questions? Call us anytime-we’re here to help

Goulds 5K165 Diaphragm Gasket
Goulds 5K165 Diaphragm Gasket
Goulds 5K165 — Ring Gasket
Pre-cut ring-style gasket for Goulds pumps. The Goulds 5K165 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.
Manufactured to meet original specifications, the 5K165 gasket ensures a precise fit and dependable performance in demanding environments.
Lower your cost per gasket with quantity-based pricing—discounts are automatically applied at checkout as your order quantity increases. See the pricing table above.
Cross-reference / Names
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Goulds: 5K165 (also 0785K165)
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Also called: 165 ring gasket, Goulds ring gasket, flat ring – standard style
Leaking pump? Replace the gasket and shaft seal together — the shaft seal is the most common leak source.
Most Goulds XSH jet pumps that use the 5K165 ring gasket typically take a 5/8″ Type 166 shaft seal, equivalent to Goulds 10K10:
- Standard, clean water — PS-680
- Salt, treated, warm, heavy-use, or commercial — PS-4240 (equivalent to 10K10)
Explore our full lineup of Pre-cut Gaskets.
Looking for more? Check out our Mechanical seals, Pump Repair Kits , & Parts/Accessories
Have questions? Call us anytime-we’re here to help

Goulds 5K231 Spacer Ring — Guide Vane Seal Ring (5K6 / 5K555)
Goulds 5K231 Spacer Ring — Guide Vane Seal Ring (5K6 / 5K555)
5K231 Spacer Ring / Guide Vane Seal Ring — Goulds J+ / JS+ / GT Series
Pre-formed spacer (guide vane seal) ring used in Goulds J+, JS+, and GT series pumps. Maintains proper spacing and sealing at the guide vane/diffuser interface to support efficient performance after service or rebuilds.
Manufactured to meet original specifications, the 5K231 spacer ring provides a precise fit and dependable performance in demanding environments.
This part is commonly referenced as 5K231 and replaces earlier molded part 5K6, with updated superseding number 5K555. It may also be described as a guide vane seal ring or spacer ring and meets NSF 61 standards for potable water system applications. Fits Goulds J+ and JS+ jet pumps — J5, J7, J10, J15 and the S models — and the full Irri-Gator GT range, where Goulds specifies this ring as 5K6: GT07, GT10, GT15, GT20, GT30 and the three-phase GT073, GT103, GT153, GT203 and GT303.
Lower your cost per gasket with quantity-based pricing—discounts are automatically applied at checkout as your order quantity increases. See the pricing table above.
Cross-reference
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5K231 (current part)
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Replaces 5K6 (molded part)
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New/superseding number: 5K555
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Also referred to as: Guide Vane Seal Ring / Spacer Ring
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Noted standard: NSF 61
Working on a Goulds pump? We build complete rebuild kits for Goulds jet and Irri-Gator pumps — this spacer ring together with the shaft seal and the diaphragm, in one part number instead of three.
Pick the kit that matches your pump:
- Goulds J+ / JS+ Repair Kit — J5, J7, J10, J15 and the S models
- Goulds Irri-Gator GT Repair Kit — GT07, GT10, GT15, GT20, GT30 and three-phase GT073 to GT303
Buying the parts separately? While the wet end is apart, replace the shaft seal and matching diaphragm too — the shaft seal is the most common leak source. These pumps take a 5/8″ Type 166 shaft seal, equivalent to Goulds 10K10:
- Standard, clean water — PS-680
- Salt, treated, warm, heavy-use, or commercial — PS-4240 (equivalent to 10K10)
- Also in this rebuild — 5K162 / 5K557 Diaphragm (J-series) or 5K256 / 5K522 Diaphragm (Irri-Gator GT)
Explore our full lineup of Pre-cut Gaskets.
Looking for more? Check out our Mechanical Seals, Pump Repair Kits , & Parts/Accessories
Have questions? Call us anytime-we’re here to help

Goulds 5K256 / 5K522 Diaphragm Gasket — Irri-Gator GT
Goulds 5K256 / 5K522 Diaphragm Gasket — Irri-Gator GT
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. Fits the full Goulds Irri-Gator GT range of self-priming centrifugal pumps: GT07, GT10, GT15, GT20 and GT30 single phase, and GT073, GT103, GT153, GT203 and GT303 three phase, ¾ HP through 3 HP. Goulds lists this part as the diaphragm, neoprene, part number 5K256, common to every model in the series.
Manufactured to meet original specifications, the gasket ensures a precise fit and dependable performance in demanding environments.
Specs
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Dimensions: 1.687″ × 7.500″
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Material: Neoprene rubber, fabric-reinforced, 1/16″ thick, black
(All of our diaphragm gaskets use highly reinforced neoprene unless otherwise specified.)
Cross-reference
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Goulds: 5K256 / 5K522
Working on a Goulds Irri-Gator GT pump? We build a complete rebuild kit for these pumps — this diaphragm together with the shaft seal and the guide vane seal ring, in one part number instead of three.
Goulds Irri-Gator GT Repair Kit — GT07, GT10, GT15, GT20, GT30 and three-phase GT073 to GT303
Buying the parts separately? While the wet end is apart, replace the shaft seal and matching guide vane seal ring too — the shaft seal is the most common leak source. Goulds specifies the 10K10 shaft seal across the Irri-Gator GT range, a 5/8″ Type 166:
- Standard, clean water — PS-680
- Pond, lake, well, silty or heavy-use irrigation — PS-4240 (equivalent to 10K10)
- Also in this rebuild — 5K231 Spacer Ring (guide vane seal ring, Goulds 5K6, same pump)
Explore our full lineup of Pre-cut Gaskets.
Looking for more? Check out our Mechanical Seals, Pump Repair Kits , & Parts/Accessories
Have questions? Call us anytime-we’re here to help

Hayward SPX1600R Gasket
Hayward SPX1600R Gasket
Hayward SPX1600R —Pre-Cut Gasket
The Hayward SPX1600R gasket is a high-quality replacement component designed for use in Hayward pool pump systems. This gasket provides a reliable seal between mating surfaces, helping prevent leaks and maintain proper system performance.
Manufactured to meet original specifications, the SPX1600R gasket ensures a precise fit and dependable performance in pool and water circulation applications.
Lower your cost per gasket with quantity-based pricing—discounts are automatically applied at checkout as your order quantity increases. See the pricing table above.
Compatible pump series
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Hayward Super II — SP3000 / SP3000X
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Hayward Super Pump — SP1600X / SP2600X
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Hayward MaxFlo — SP1800X / SP2800X
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XE / VS pump variants using the SPX1600R housing gasket profile
Why choose this part:
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Direct-fit profile for quick, reliable installs
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Pre-cut for consistent thickness and sealing pressure
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Ideal for routine maintenance or full pump rebuilds
Explore our full lineup of Pre-cut Gaskets.
Looking for more? Check out our Mechanical Seals, Pump Repair Kits , & Parts/Accessories
Have questions? Call us anytime-we’re here to help

Hayward SPX1600T Gasket
Hayward SPX1600T Gasket
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