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  • Users: ohelbig
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  1. ohelbig

    O-ring E515-80 compatibility to N2H4

    Hi, I'm looking for any kind of evidence, that o-rings made from Parker EPDM compound E515-80 (formerly known as EPR 515-80) can be used as sealing barriers in a space propulsion valve. The operating media is Hydrazine (N2H4). Eckart Schmidt says in his Hydrazine bible, that it is "one of the...

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