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Toolrunner Ltd on Twitter: "A Ball trammel Gauge is a comparator device for ring seal grooves in #valves and #flanges. http://t.co/rrGHIbPN5E" / Twitter
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Ideal Vacuum | ASA 6 Inch Blank Flange with O-Ring Groove, Not Bored, Not Rotatable, 11 in OD, 9.5 BCD, 0.81 in Hole Diameter, 8 Holes, 304 Stainless Steel
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