Deep Polypak® Rod/Piston U-Seal 4.000" x 4.500" x 0.562" - AU/NBR

Marsoni

M251S

$44.24

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

Deep Polypak® Rod/Piston U-Seal 4.000" x 4.500" x 0.562" - AU/NBRProduct Details : Deep Polypak Rod Piston U Seal 4. 000" x 4. 500" x 0. 562" AU NBR Part No: 25004000 562 4615 Product Category: Symmetrical Seals Product Type: Rod Piston U Seal Profile: Deep 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: 4. 000" x 4. 500" x 0. 562" Nominal

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I haven't had a flat tire yet, so I also haven't had occasion to test these but they seem like great value for an extremely low price (especially versus a new tire.) I have handled them to try and gauge how quickly they'd smooth a hole, and they're rough / sharp and aggressive enough that I expect them to work quickly and well on not only tires, but on a variety of other materials. This pattern in particular should allow material to be shed and then passed backward pretty easily without clogging things up or slowing them down. If you've bothered to buy a patch kit for your tires, you really ought to have one of these around.

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Reviewed in the United States on January 18, 2026

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Don

Massapequa, US

★★★★★ 5

Thank you!

Size: 1/4-Inch - With Adapter

Thank you!

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Reviewed in the United States on April 27, 2023

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