Spring Loaded Type B Polypak® Rod/Piston U-Seal 1.375

Spring Loaded Type B Polypak® Rod/Piston U-Seal 1.375" x 2.000" x 0.500" - AU/SS

Marsoni

M251S

$36.74

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

Spring Loaded Type B Polypak® Rod/Piston U-Seal 1.375" x 2.000" x 0.500" - AU/SSProduct Details : Spring Loaded Type B Polypak Rod Piston U Seal 1. 375" x 2. 000" x 0. 500" AU SS Part No: 31201375S500B 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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Was hoping this version would be better, but no. Welcome to the Nite Ize repair center. The pictures show the old version run by LED batteries. Although they claim the balls are waterproof, no. I’ve learned to clean out the contacts and add new batteries to reuse them, but a lot of the time the rust has already formed. The new rechargeable version is more expensive and has the same ‘waterproof’ casing. First charge was good; second charge didn’t even last for our retrieving sessions one evening. Third session on a full Charge didn’t even last one session. Too much money for the quality. When they work - they are great. Unfortunately, still the best on the market, it it’s just like throwing away money. Innovators???

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Reviewed in the United States on October 4, 2025

Verified Purchase

LOUIE POOP

Boise, US

★★★★★ 5

Better than expected

Style: dog ball launcher

Sick love it nice and longer than expected !!! Good quality durable material also .

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Reviewed in the United States on April 23, 2026