I think Jake is on to something with the run out. In fact that is something I have been concerned with on here for years. I see people buy axle housings and then weld brackets to them. Guaranteed they are running out excessively afterword unless they follow a procedure similar to the one Jake mentioned. That's another topic all together. The way I can see this working and what you mention Blake about Speedway using snap rings helps substantiate my theory. If when the housing is being constructed, you machined a seat for the seal on the inside of the tube that was concentric with the carrier bearings and hub bearings than you could ensure a good fit. When we were using them, they were sold as lip seals to press in the end of the 3" axle tube with no machining. The tubing is typically DOM, but I'm not sure what the mfg. tolerances are with regard to wall thickness and ID/OD concentricity. In any case, I think runout was definitely an issue. All of our housings were jig built and straightened, but maybe not close enough. It sounds like Speedway is machining the ID on the NASCAR stuff since they are using snap rings. The amount of compliance in the seal will help a lot too. You'll get it handled Blake. Good luck with the product!
