★★★★★ 2
Quality control lacking
One tee conector was missing. Nothing avaliable locally that fits.
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Reviewed in the United States on July 13, 2025
O-Ring 420mm x 428mm x 4mm - Nitrile (70) Black
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
O-Ring 420mm x 428mm x 4mm - Nitrile (70) BlackProduct Details : O Ring 420mm x 428mm x 4mm Nitrile (70) Black Part No: MOR4200040 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: 420mm x 428mm x 4mm Interior Diameter (d): 420mm Outside Diameter (D): 428mm Cross Section (S): 4mm For any information about products, please
Quick Dispatch:
Your O-Ring 420mm x 428mm x 4mm - Nitrile (70) Black orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- 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
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Based on 2138 reviews
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Product Reviews
★★★★★ 1
It doesn’t stay in
The pipe keeps coming out. Not worth the money. Not sturdy to hold a top table.
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Reviewed in the United States on February 20, 2024
★★★★★ 2
Good finish, poor hardware.
Set screws are poor quality and are sometimes powdercoated on the exposed threads. Leads to striped hex sockets and inability to tighten properly.
Durable finish as evidenced by no visible damage after throwing parts across the shop in frustration.
Ended up running self tapping screws thru parts to complete assembly.
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Reviewed in the United States on February 26, 2024
★★★★★ 1
Kinda flimsy…
Thought the assembly was metal, it’s some kind of PVC.
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Reviewed in the United States on September 22, 2025
★★★★★ 5
Stacking shelves
These work perfectly, even in rooms with high ceilings. One thing I didn’t really see mentioned or highlighted anywhere is that they can be stacked. I decided to try it anyway, and it turned out awesome. I purchased two units and placed one on top of the other, which essentially created one tall shelf. It ended up being a great way to maximize vertical space and made the setup look much more custom and intentional
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Reviewed in the United States on March 11, 2026
