All of PolarStars products differ in dimensions and components, and this complete O-ring set is designed to repair the F1 HPA Engine. The rings are factory replacement components that fit the F1 HPA Engine perfectly without modification. You have all the rings you need in this set.
The rings are made of high-quality rubber, achieving a perfect seal able to withstand intense use. They dont fit in other PolarStar products, so you shouldnt mix and match them. Doing so can result in catastrophic failure.
As components slowly wear out, you can replace them with this new set. The rings resemble your original ones 100% and have little to no deviation.