E-Seal 13mm Pelmet Seals provide a tight, protective seal between the roll-over tarp and the pelmet, making it waterproof and protecting your load. The seal is bolted to the top of the pelmet using our Flat Bar for Pelmet Seal. Thickness of 13mm. E-Seal 18mm Pelmet Seals provide a tight, protective seal between the roll-over tarp and the pelmet, making it waterproof and protecting your load. The seal is bolted to the top of the pelmet using our Flat Bar for Pelmet Seal. Thickness of 18mm. P-Seal 10mm Pelmet Seals provide a tight, protective seal between the roll-over tarp and the pelmet, making it waterproof and protecting your load. The seal is bolted to the top of the pelmet using our Flat Bar for Pelmet Seal. Thickness of 10mm.