Cab actually the page in Goodsens that has a pic of the three different types is where I saw that mine are the "2 piece ring and rubber". they appear to fit snug on the head steel nub & good reminder on the installation sleeve as I have seen that piece before & if I cannot find it I will use some scotch tape instead. I'm mostly worried that the valve stem may be too tight thru the seal ID hole & not let enough lube past. these seals do adequately clear the inner mini springs ID.