Job
Hydrazine-compatible propellant tank diaphragms (Rubbercraft product line)
Contracted by Spacecraft / launch primes (not public per program) from Rubbercraft · Artemis I
Rubbercraft makes EPDM diaphragms for hydrazine tanks used on spacecraft propulsion systems.
The company cites diaphragms from 5 to 35 inches across, and expulsion above 95 percent.