"Also need to seam seal a pair of MLD event mitts"
MLD sent a small tube (.5oz tube) with the mitts but, my past experience with the quantity I knew it would not provide a satisfactory job for BOTH mitt. Use 1 oz of SeamGrip for BOTH (.5 oz for each) AND I thinned the SeamGrip along with accelerating the curing by using Cotol-240™ Cleaner & Cure Accelerator. I used the mitt filling technique given by Ron on his site BUT, turned the mitts inside out and sealed the INNER SEAM & STICHING HOLES.
The suggestion of using Permatex #81730 Flowable 100% Silicone Windshield Sealant, available at any auto parts store is an excellent suggestion but, I do not have any experience using it on gloves.
I have used Permatex for both sealing and glueing seams years with my silnylon seams. Compared to Silnet, it is tougher, less sticky, more liquid with better penetration, and perhaps more UV resistant. It cures to the touch in 30 minutes, sets as a glue in 20 minutes, fully cures in 24 hours. It's also cheap - half the cost of Silnet for twice the amount of product.