Piranha STBB Hammer Oring Duro?

[Toestr]

I'm about to order some orings and I'd like to know what durometer the factory hammer oring is for a Piranha.

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[Tinman74]

70 duro urethane

[Trbo323]

You can run either 70 or 90. I tend to use 90, I feel they will last longer but as I sell most of these I don't have them long term

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[Toestr]

You can run either 70 or 90. I tend to use 90, I feel they will last longer but as I sell most of these I don't have them long term

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Thanks. I tried to run 90D in my Tippmann Prolite for the hammer and valve when factory spec was 70D and it wouldn't cycle. I guess the 90D didn't crush enough and caused too much friction. I replaced them with 70D and it worked fine. Just wanted to make sure it wouldn't be the same deal.

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[Tinman74]

They tend to cycle weird on 90’s. That’s just my experience.

[Trbo323]

Yeah I only stock 015 in poly 90d so spyder lower tube and hammer. Tippmann stuff all gets 70d if it comes through my bench so I don't have a lot of experience running them in something else

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