Delta NOS no. 1349427. This is the oil seal in the gear box where the cutter head shaft goes into the gear box.  It will fit the listed Delta 15" planers.  Used on the following planers:  22-675, 22-676, 22-680Y, 22-680, 22-681, 22-780X, 22-785X, 22-790X.  Shipping on this item is free via USPS or UPS. I do combine shipping wherever possible. I do ship internationally. Just email me and I will quote shipping to your country.