This is a replacement seal and impeller housing O-ring for nearly all Volvo Penta crankshaft mounted raw water pumps / sea water pumps. The garter spring is 316 stainless steel and it is a single lipped seal just like the OEM.  We have them manufactured specifically for our products. This seal is located directly behind the impeller. If you have any fitment questions just ask. The Volvo Penta equivalent part number is 824247.  When you remove the old seal rotate the bearing, it should turn smoothly.  If it doesn't you should most likely have your pump rebuilt.  Check my other auctions to view the rebuild kits I sell as well as the rebuild send in service.

Here is a list of some raw water pumps this seal and O-ring is compatible with.