Pardini bolt o-rings

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Pardini bolt o-rings - Page 2 Empty Pardini bolt o-rings

Post by SMBeyer on 12/13/2017, 7:19 pm

First topic message reminder :

Anybody know what size these really are?  From measuring in inches and converting to mm the best i've come up with is 1.9mm CS X 2.1mm

Scott
SMBeyer
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Pardini bolt o-rings - Page 2 Empty Re: Pardini bolt o-rings

Post by Amanda4461 on 12/20/2017, 3:44 pm

I asked Pardini about these O-Rings. All they would tell me was "they are Metric."

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Pardini bolt o-rings - Page 2 Empty Here's a source of O rings that work in my 2017 SP

Post by CraigB5940 on 4/16/2020, 8:15 pm

Thanks to forum member Gravy posting about this part number, I ordered these from Mc Master Carr:

Mc Master Carr O rings:
Part number 5308T113, Buna-N, Durometer Hardness (90A), 0.07” Width, 0.070” ID, 0.201” OD

I replaced my factory O rings after 15 K rounds (22 LR) and it's been running fine after a 200 round test-100% function. The old factory O rings were done, I think I should have replaced them at 10K based on what I found at 15K rounds.

Gravy provided the info in this forum post:
https://www.bullseyeforum.net/t14472-the-annals-of-troubleshooting-a-pardini-sp-be-22

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