Rod/Piston U-Seal (8400) 7.375" x 8.000" x 0.312" - Nitrile

Marsoni

M251S

$69.06

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

Rod/Piston U-Seal (8400) 7.375" x 8.000" x 0.312" - NitrileProduct Details : Rod Piston U Seal (8400) 7. 375" x 8. 000" x 0. 312" Nitrile Part No: 841007375 4180 Product Category: Symmetrical Seals Product Type: Rod Piston U Seal Profile: 8400 Material(s): Nitrile Material Code: NBR Durometer: 80A Temperature Range: 40F to +250F ( 40C to +121C) Pressure Range: Hydraulic: 1250 PSI (86 Bar) Pneumatic: 250 PSI (17 Bar) Surface Speed: Hydraulic: < 1. 6 ft s (0. 5 m s) Pneumatic: < 3. 3 ft s (1 m s) System Of

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I bought these for my memory foam pillow and they’re excellent for cooling it. I use 2 of these on the pillow for maximum chill factor and it works. They’re very soft, the zippers are high quality. Easy to put on with a bit of stretch- generously sized. They’re stain resistant. I’m glad they’re NOT waterproof because they’d be too hot then. They’re very durable. Wash on delicate setting in a mesh bag and air dry and they last long. They’re very quiet- smooth and silky. Definitely recommend!

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Reviewed in the United States on January 15, 2026

Verified Purchase

Jamie Cowan

Lexington, US

★★★★★ 3

Cool enough

Size: Queen, Color: White, Size: Queen, Color: White

I thought I had purchased pillows so when I received these I was a little disappointed. However that was 100% on me for not reading the listing and just trusting my search. I decided to give them a try and so far they seem ok. They don’t stay cool even though I have them on cooling pillows. They are super thin but very soft. They fit on my pillows perfectly. I don’t think it has improved my sleep quality but it hasn’t made it any worse either. I don’t think they are waterproof but I don’t really want to test that. I like that the zipper is small and seems to be decent quality. Smelled heavily of chemicals when I first took it out of the package but that disappeared after a few minutes.

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Reviewed in the United States on March 21, 2026

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Amazon Customer

San Leandro, US

★★★★★ 5

Sleep like a baby

Size: Queen, Color: White

These pillow covers are cool. They keep you cool at night. very, very comfortable.

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Reviewed in the United States on May 13, 2026

Verified Purchase