PTFE needs a insert tool great product if fitted correctly
This oil seal needs to be fitted totally different than a old style oil seal which fitting is quite the opposite. PTFE seals need no lubricant at all and are fitted dry both surfaces but they do require a insert ring. I have given 3 stars for this reason other wise 5 star rating if you already have special tool. Originally I sent this item back ordering original which turned up the same and this is when I did a bit of research cost my more in time and new part. It's changing times what old mechanics are use to it's a good product bad mechanic ?