Hey everybody

Hi I am new to this site and I have a 76 280z 2+2 that I have been getting up and running again...it sat for 15 years and I put an entire new fuel system on it and am now working on the brakes and all the other stuff it needs..turns out my speedometer cable was leaking and I ordered new seals from MSA..they sent me the 2 on the right...the old one (on the left)..I cant find out what to call it..it was the one that was actually leaking. It is located on the speedometer nut at the transmission also (4 speed). Any help would be greatly appreciated!