Comments about RETURNED: Nashbar Self Sealing Road Tubes:
both front and back tubes blew out as soon as I put in 95 psi (within 30 seconds of each other). The sealant went all over the place - what a mess. I was inflating fold-up Kevlar bead tires, recommended for 95 psi (27 x 1 and 1/4).
Bottom Line No, I would not recommend this to a friend