Need some help with Thiel CS3.5 crossovers

I started having some intermittent problems with my 3.5's, I decided to pull the woofers and take a look at the crossovers. Low and behold I had at least one blown cap in each crossover. I'm planning to recap them myself, but I'm no expert and I'm having trouble identifying one of the components in the crossover. In each group of caps there is a a small silver component. They appear to be labeled H15000 nohm 15000H. I'm attaching a link to a picture http://img.photobucket.com/albums/v682/zkellogg/image.jpg

If anyone could tell me what this little guy is I'd sure appreciate it.

On a side note, is there any reason to suspect or replace the resistors or coils while I have these guys out of the cabinets?

Thanks a ton!