I have a 3 piece wheel, and recently it started leaking air. I submerged it in water, and i can see a 3-4 inch section of the wheel leaking where the face of the wheel meets the rear. The wheel is held together by a array of 12pt. torx screws, I tried tightening the bolts, but still leaks.

My question is, does any body know what kind of seal, or maybe sylicone is used to seal these kind of wheels?????