Engine Seals

Hey guys, new to the forum and would like your input on engine seals. I searched for any threads regarding seals but did not see anything. If there is one please tell me.

I have a 79 Husky 125 that I am rebuilding the engine. I have aquired new bearings and am now looking to get new seals. The ones that were in the engine are Corteco's with the following information on the side:

CORTECO I1 CFW BAUD1SL 20-35-7/6
CORTECO B4 CFW BAB2SL 25-35-6/65
CORTECO I2 CFW BAU3SL 25-47-7

They are rubber coated double lip seals and I would probably want to go back with the same thing. However, these numbers appear to be outdated and I am having trouble finding a cross reference number. The place I bought the bearings from can get seals but they aren't sure about these numbers because of the slashes (ex: 20-35-7/6). Any new seals seem to be just a 7 or a 6. The parts book only gives the size of the seal without a slash so I am not sure either.

Now for the questions. Does using a 7 or 6 instead of a 7/6 make any difference as long as the width does not make the seal extend beyond the flange? Do you know of a replacement? Can you recommend a brand and give seal numbers?

Thanks.

seals

The numbers like 25-47-7 is the size in Metric mm which is handy for reference. 25 is the shaft diameter, 47 is the outside diameter and 7 is seal width. Alot of times the width will be a combo of two numbers 6/7 is for a variance. Hope this helps!

fleet nailed it.

call uptite for sourcing hard to find stuff. if he aint gots he prolly knows who does.

Have you measured the thickness of the old seals?Use that size and you be fine.I just bought some of those seals for a husky project from a bearing supply house.

No, I haven't measured them yet. They are still in the flanges. It looks like I will have to do that.