Fitting a new crank to my bike I knocked out the plastic top hat shaped seal cover on my Gusset BB. In a moment of hamfisted brilliance I managed to break it putting it back in. So, where do I find a replacement? Google throws up an FSA one at CRC, will this fit?

Bump. Much googling has found an FSA bearing shield or Hope shields. The FSA one on CRC looks the same… Does anyone out there know whether it will fit?