Type B Polypak® Rod/Piston U-Seal 5.500" x 6.000" x 0.562" - AU/NBR

Marsoni

M251S

$92.35

Get it in 3 business days with 1 day shipping. Friday, May 29

Type B Polypak® Rod/Piston U-Seal 5.500" x 6.000" x 0.562" - AU/NBRProduct Details : Type B Polypak Rod Piston U Seal 5. 500" x 6. 000" x 0. 562" AU NBR Part No: 25005500 562B 4615 Product Category: Symmetrical Seals Product Type: Rod Piston U Seal Profile: Type B Polypak Material(s): Polyurethane Nitrile Material Code: AU NBR Temperature Range: 65F to +200F ( 54C to +93C) Pressure Range: 5000 PSI ( 345 Bar) Surface Speed: < 1. 6 ft s (0. 5 m s) System Of Measurement: Inch Dimensions: 5. 500" x 6. 000" x 0. 562"

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Called around for quotes to get them replaced and everyone was quoting over $2k just for bellows. Figured I’d give it a try. The rubber is good quality and feels soft. Time will tell but this is an easy job if you’re mechanically inclined. Make sure you replace the plastic water pickup fitting while you’re at it. Found mine to be cracked on disassembly and had to wait for a new one. Should be a easy 3-4 hour job if your not doing the bearing and only doing bellows

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Reviewed in the United States on August 26, 2024

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Ben

Lowell, US

★★★★★ 3

Just ok

Qualities OK, but for Marine applications might want better

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Reviewed in the United States on August 3, 2025

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Barbara S.

Waukegan, US

★★★★★ 5

Great quality

Just as described.

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Reviewed in the United States on July 22, 2025

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Paul Kirchberger

Lowell, US

★★★★★ 5

Bellows kit review initial inspection’s

Very good quality. The hose clamps were event the better ones you have to pay extra in most cases.

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Reviewed in the United States on April 6, 2025

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Captain Ron

Omaha, US

★★★★★ 5

Good value, very useful for go kart wiring

Size: 100ft, Style: 6C-18AWG

It's a good spool to have around to wire lights and things on the go karts. Also came in handy when I had to patch a bit of melted wire harness on the tail of the old Dodge.

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Reviewed in the United States on May 6, 2026