Split Backup Rings 45mm x 55mm x 3mm - Nylon

Split Backup Rings 45mm x 55mm x 3mm - Nylon

Marsoni

M251S

$12.16

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

Split Backup Rings 45mm x 55mm x 3mm - NylonProduct Details : Split Backup Rings 45mm x 55mm x 3mm Nylon Part No: BU045055030ST N Product Category: Rod Seals Product Type: Split Backup Rings Material(s): Nylon Temperature Range: 40F to +250F ( 40C to +121C) System Of Measurement: Metric Dimensions: 45mm x 55mm x 3mm Nominal I. D. (d): 45mm Nominal O. D. (D): 55mm Nominal Height (H): 3mm Nominal Cross Section: 5mm Details: This series of backup rings are used in conjunction with U Cup type rod

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This works really well! I used it several times and really saw a difference. Unfortunately I had a root canal done and the following day I decided to whiten and I thought I was going to die! I didn’t know my front tooth was going to be that sensitive from the tooth canal. That was my fault and only telling this story as a warning! Do not use this after dental work unless your dentist says ok! Otherwise it works amazingly!

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Reviewed in the United States on May 2, 2026

Verified Purchase

Zero

Houston, US

★★★★★ 4

Easy to use

Size: 4 Count (Pack of 1)

Continued use is needed for best results

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Reviewed in the United States on May 14, 2026

Verified Purchase

Nicole

Massapequa, US

★★★★★ 5

No sensitivity issues and works!

Size: 4 Count (Pack of 2)

I have what I would consider sensitive teeth and this doesn’t bother them one bit. I have used nightly for about 5 nights and can see a difference in color but again, no pain or sensitivity problems! I would recommend to anyone who asks what product to get for whitening teeth.

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Reviewed in the United States on February 25, 2026