Sefar America Inc. offers SEFAR Micro Tube, an ultrasonically seamed tube with an ID ranging from 2-10 mm (0.08-0.4 in). The seam is an overlap construction and reportedly provides a true circular cross-section. According to Scott DeWitt, manager of market and product development, there was previously no way to make circular cross-section filtration tubes as small as this product without protruding seams. "This is an exciting breakthrough, particularly for insert injection molders who struggle to make small diameter in-line filters. This technology will reduce material handling and offers several advantages over previous technology."
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