Artline Hi-Seal (UN-INKED) Stamp Pad #2 - Pad Size: 2-1/2" x 3-3/4". Artline Hi-Seal Dry un-inked stamp pads can be used with our Hi-Seal inks, STG or STSG inks. These inks are formulated to perform under the harshest conditions encounted in today's manufacturing world. Whether you need it to stick to a glossy, non-porous surface, be waterproof, mark on food products or glow under a UV light source, Artline has you covered. Our Industrial stamp pads use an air-tight lock to ensure a long life for the inking surface.