Kemet has a range of capacitors designed for use in high-reliability space applications. The capacitors meet the requirements of MIL-PRF-55365 as well as MIL-STD-1580. 

Part numbering is designed to allow for designation of Weibull grading (level C – 0.01%/k hours), surge current level (10 cycles at 25 deg C, 10 cycles -55 and +85 deg C before/after Weibull grading), performance testing level (catalogue details available options), ESR (low and standard), and termination finish.

Fused versions are available for built-in circuit protection, and multiple anode designs are available for very low ESR values.

See http://www.kemet.com