Gary, do you mean the chevron seals(earlier models) or the o-rings (later models)? I got the chevrons at a hydraulic house too. However, when I actually opened up the LG, I found that they were O-rings. Fortunately for me, the O-rings (MS 28775-328 & -330) were also readily available.
I don't remember what the part number was for the chevron seals, but am sure that if you take them with you, they will match them up.?? Good luck! Larry