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O-Ring 379.3mm x 390.7mm x 5.7mm - Nitrile (70) Black
O-Ring 379.3mm x 390.7mm x 5.7mm - Nitrile (70) Black
O-Ring 379.3mm x 390.7mm x 5.7mm - Nitrile (70) Black
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O-Ring 379.3mm x 390.7mm x 5.7mm - Nitrile (70) Black

Marsoni M251S
Sale price$73.98
Pay 4 payments of $18.50 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
O-Ring 379.3mm x 390.7mm x 5.7mm - Nitrile (70) BlackProduct Details : O Ring 379. 3mm x 390. 7mm x 5. 7mm Nitrile (70) Black Part No: MOR3793057 N Product Category: O Rings Product Type: O Ring Standards: Standard Material(s): Nitrile Material Code: NBR Color: Black Durometer: 70 Temperature Range: 40F to +250F ( 40C to +121C) System Of Measurement: METRIC Dimensions: 379. 3mm x 390. 7mm x 5. 7mm Interior Diameter (d): 379. 3mm Outside Diameter (D): 390. 7mm Cross Section (S): 5. 7mm For any
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  • Fast: 2-3 business days
  • Express: 1-2 business days

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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 2084 reviews
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Product Reviews
J
Verified Purchase
john jeffrey elliott
West Palm Beach, US
★★★★★ 1
TOO SMALL
Size: Medium, Color: Blue
Nice socks, but they are way too small. Says they fit size 6 - 10. I kept 3 ( I wear size 8) and gave 3 to my daughter (size 8.5). We both agreed that they were just too small.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
M
Verified Purchase
Mar Gee
Houston, US
★★★★★ 5
Style and comfort
Size: Medium, Color: Black
Exactly what I was looking for. Style and sock thickness and comfort.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 14, 2025
A
Verified Purchase
Amazon Customer
Pawtucket, US
★★★★★ 5
Comfortable
Size: Medium, Color: Blue
So comfortable! They stay up perfectly love love love
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 7, 2025
G
Verified Purchase
Glass
Los Angeles, US
★★★★★ 5
I stay on your foot they don’t slip in your shoe
Number of Items: 3, Color: White/Neutral (3-pairs), Size: Medium
This is the only socks I wear Under Armour because they stay in place I wear a size 8, but they’re more comfortable with a large instead of a medium, but I wear both because I have them already and you can pull them to stretch them out a little bit
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
L
Verified Purchase
Lauren
Grantham, US
★★★★★ 5
Great fit, truly doesn’t slide off heel
Number of Items: 3, Color: White/Neutral (3-pairs), Size: Medium, Number of Items: 3, Color: White/Neutral (3-pairs), Size: Medium
I’ve scoured all the lands looking for a no-show sock that was 1) thin, 2) quality, soft, breathable material, 3) didn’t dig into my feet/heels, 4) doesn’t shrink, and most importantly 5) stays on the back of my heel without a bulky non-slip rubber piece and these check all the boxes! Perfect for low profile women’s work shoes like Keds, etc. Not low enough for most flats though. I wear a women’s size 9.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2025

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