Solid Contoured Backup Ring 6.000" x 6.375" x 0.076" - Nitrile

Marsoni

M251S

$10.86

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

Solid Contoured Backup Ring 6.000" x 6.375" x 0.076" - NitrileProduct Details : Solid Contoured Backup Ring 6. 000" x 6. 375" x 0. 076" Nitrile Part No: 8 361 N90 Product Category: O Rings Product Type: Solid Contoured Backup Ring Series: 8 XXX Dash No.: 361 Material(s): Nitrile Material Code: NBR Durometer: 90 Temperature Range: 40F to +250F ( 40C to +121C) System Of Measurement: Inch Dimensions: 6. 000" x 6. 375" x 0. 076" Nominal I. D. (d) : 6. 000" Nominal O. D. (D) : 6. 375" Nominal Width (W): 0. 187" R: 0.

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We offer a 30-day return/exchange service after receiving.
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Very good product for the price - the front brushes wear fast compared to the original Eufy’s but for the value you do get a lot of product. So only 4 stars but just for the brushes “appearing to not last as long and bend but the buy is worth the extras. The filters look and work identical to the OEM. Good stuff - thanks!

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Reviewed in the United States on December 25, 2025

Verified Purchase

Eduardo

Dallas, US

★★★★★ 5

Perfect fit, 11s running like new!

Style: with Pre-Filter

All parts fit perfectly. My vacuum lasts about 20 min longer since the filter isn’t clogging it. Also, replacing the spinning brush quieted it down significantly, it sounds like new again.

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Reviewed in the United States on May 20, 2026

Verified Purchase

kathp

New York, US

★★★★★ 5

Replacement parts

Style: with Pre-Filter

Was so happy to find the replacement parts for my eufy robovac. Really makes a big difference in vac performance.

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Reviewed in the United States on April 5, 2026