SuperPro O-Ring for Flo-Master, O-257-9 In stock$3⁹⁹

SuperPro O-257-9 o-ring for Aqua-Flo Flo-Master pumps

SuperPro O-Ring for Flo-Master, O-257-9

Name: SuperPro O-Ring for Flo-Master, O-257-9
Brand: Aladdin
SKU: SPG-601-1137
Price: 3.99 USD
Availability: InStock

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$3⁹⁹

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Quick overview

Sized to the original 4-3/4 inch inside diameter, 3/32 inch cross section, so it drops into the same groove.
Flo-Master pumps Listed under Aqua-Flo Flo-Master FMCP and FMHP pump parts.
Volute to bracket seal The source listing identifies this ring as the volute to bracket o-ring.
Cross referenced Also carried under substitute part numbers 5000-2626 and 90-423-5158.
Replace it once the pump is open An o-ring that has taken a set will not reseal reliably after the wet end has been apart.
Silicone lubricant only A light silicone film helps it seat; petroleum grease attacks the rubber over time.

Full description and specifications ↓

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Product details

This is the SuperPro O-257-9 o-ring for Aqua-Flo Flo-Master pumps. It measures 4-3/4 inches on the inside diameter with a 3/32 inch cross section, and the source listing identifies it as the volute to bracket seal.

Getting the right ring

O-rings are easy to guess wrong at. The two numbers that matter are the inside diameter and the cross section, and both are printed above, so an old ring can be measured and matched before you order. This one is also carried under the substitute numbers 5000-2626 and 90-423-5158, which is worth knowing if your parts list uses a different catalog.

Fitting

Clean the groove, check the sealing face for scoring, and give the new ring a light coat of silicone lubricant so it seats evenly as the housing pulls together. Once an o-ring has taken a set it will not reseal the same way twice, so fit a fresh one whenever the wet end has been apart.

Specifications
Brand	SuperPro
Manufacturer part number	O-257-9
UPC	601402263538
Type	O-ring
Inside diameter	4-3/4"
Cross section	3/32"
Substitute part numbers	5000-2626, 90-423-5158
Fits	Aqua-Flo Flo-Master FMCP and FMHP series pumps
Shipping weight	0.1 lb
Ships	Parcel

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Questions and answers

What people ask about this product, answered by our pool techs.

What size is this o-ring?

4-3/4 inch inside diameter with a 3/32 inch cross section.

Which pumps is it for?

It is listed under Aqua-Flo Flo-Master FMCP and FMHP pump parts. Measure your old ring against the dimensions above if you are working on something else.

Are there other numbers for this ring?

Yes. It is cross referenced to 5000-2626 and 90-423-5158, and the product photo is labeled O-257.

Should I lubricate it?

A light film of silicone lubricant helps the ring seat without pinching. Avoid petroleum based grease, which degrades the rubber.

Ask your own question