Spring Loaded Type B Polypak® Rod/Piston U-Seal 3.750

Spring Loaded Type B Polypak® Rod/Piston U-Seal 3.750" x 4.500" x 0.625" - AU/SS

Marsoni

M251S

$119.05

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

Spring Loaded Type B Polypak® Rod/Piston U-Seal 3.750" x 4.500" x 0.625" - AU/SSProduct Details : Spring Loaded Type B Polypak Rod Piston U Seal 3. 750" x 4. 500" x 0. 625" AU SS Part No: 37503750S625B 4723 Product Category: Symmetrical seals Product Type: Rod Piston U Seal Profile: Type B Polypak Style: Spring Loaded Material(s): Polyurethane Stainless Steel Material Code: AU SS 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

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I have them in every color and used to get them from Sams, but they stopped selling them and I was lucky to find them on Amazon. Got all colors again. They stay, it's all I'm gonna say! And don't show in any of my tennis shoes. Absolutely love them and wear them until they get holes. They last a LONG time too. They're on the thin side and my foot loves them because they tend to get hot. There's no shrinking, they wash great with exception of the white ones I couldn't manage to keep white - they turned a bit greyish.

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Reviewed in the United States on January 4, 2026