Piston U-Seal (PB-1) 50mm x 40mm x 7mm - Polyurethane

Piston U-Seal (PB-1) 50mm x 40mm x 7mm - Polyurethane

Marsoni

M251S

$19.02

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

Piston U-Seal (PB-1) 50mm x 40mm x 7mm - PolyurethaneProduct Details : Piston U Seal (PB 1) 50mm x 40mm x 7mm Polyurethane Part No: P050040070PB 1 Product Category: Piston Seals Product Type: Piston U Seal Profile: PB 1 Material(s): Polyurethane Material Code: AU Durometer: 93A Temperature Range: 31F to +176F ( 35C to +80C) Pressure Range: 290 PSI ( 20 Bar) Surface Speed: < 3. 3 ft s (1 m s) System Of Measurement: Metric Bore Diameter: 50mm Dimensions: 50mm x 40mm x 7mm Nominal I. D. (d): 40mm Nominal

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Relatively cheap, lightweight, and better than most. It gets warm, but not hot. The Video adapter was immediately recognized by my Macbook and works flawlessly at all resolutions made available (much higher than Windows PCs) I used it both as the recipient of my 65W Mac charger, and the Mac received its power from this device; I also had the 65W Mac charger plugged directly into the Mac, and this plugged into the second USB-C plug on the mac. It works (HDMI monitor) both ways. It says that the ports are not for "charging", however be aware that they do charge when devices are connected, for example my iPhone to the extra USB-C port, or the USB-A port. My Logi back-lighted keyboard lights up too. I don't know why they say it is not for charging. Perhaps it is simply saying there are no ports expressly intended to do charging without connecting to your computer.

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Reviewed in the United States on February 18, 2026

Verified Purchase

J. Stewart

Lowell, US

★★★★★ 5

High quality and all the right connection types

This works great. I've used it for both my MAC and PC. I really love the Ethernet on the end and the HDMI connections (which modern laptops don't include at times). This is a great adaptor and highly recommend.

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Reviewed in the United States on May 14, 2026

Verified Purchase

B. Thompson

Massapequa, US

★★★★★ 4

One complaint

Works very well and solved port issues on my X1 Carbon. My only quibble is that the C interface cable from the unit to the PC is a bit too stiff and tends to lose connection if things move about.

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Reviewed in the United States on December 5, 2025

Verified Purchase

HauntedBurgerz

Pawtucket, US

★★★★★ 5

Perfect for my use

Works as intended. Solid build quality and works with my Windows laptop through the USB C connection. I wish the product description would clarify that the USB ports do not support video.

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Reviewed in the United States on April 15, 2026

Verified Purchase

Amazon FAN!!!

Dallas, US

★★★★★ 5

Good Buy

It's been more than a month it works great, no issues. Does not heat up, good material, compatible with both Mac and Windows, I have both OS laptops.

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Reviewed in the United States on April 29, 2026