Tube Plug catalog Part No. Tube O.D. T H in mm in mm 20UP  1-1/4 31.75 1-7/8 47.6 24UP  1-1/2 38.10  2-1/4  57.1 32UP  2 50.80  3  76.2 Metric Size Part No. Tube O.D. T H in mm M28UP 28.0 1-13/16 46.0 M30UP 30.0 1-15/16 49.2 M32UP 32.0 1-15-16 49.2 M38UP 38.0 2-3/8 60.3

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