Laboratory Glass Tubing
Corning Borosilicate Tubing
Pyrex Heavy Wall Tubing					NEWPORT INDUSTRIAL GLASS, INC.
Pyrex 7740 Heavy Wall Tubing					GLASS TUBING AND ROD DIVISION
Low-Expansion Borosilicate Glass Tubing					( fka HACKER GLASS COMPANY)
Clear Borosilicate Glass Tubing
Heavy Wall Glass Tubing
{Warning: The information contained in this chart is subject to change without notice or it may contain compilation errors. Please verify data before relying on it}
Corning	Generic	Nominal	Nominal	Nominal	Nominal	Estimated	Estimated	Nominal	Approx.	Approx.	Approx.	Approx.
Catalog	Name	Outside Dia.	Outside	Wall	Wall	Residual	Inside Dia.	Length	Number	Number	Pounds	Weight
Number		mm &	Diameter	Thickness	Thickness	Inside Dia.	Tolerance (+/-)	mm &	of Pieces	of Feet	Per	Per
		Inches	Tolerances (+/-)	mm & Inches	Tolerances(+/-)	mm & Inches	mm & Inches	Inches	Per Case	Per Case	Foot	Case
237650	Pyrex Hvy.	9.5 mm	0.30	2.00	0.20	5.53	0.71
	Wall Tubing	0.375	0.012	0.079	0.008	0.218	0.028	48	96	384	0.07	27
237500	Pyrex Hvy.	12.7 mm	0.30	2.39	0.20	7.92	0.71
	Wall Tubing	0.500	0.012	0.094	0.008	0.312	0.028	48	61	244	0.11	27
237660	Pyrex Hvy.	15.9 mm	0.30	2.39	0.20	11.10	0.71
	Wall Tubing	0.625	0.012	0.094	0.008	0.437	0.028	48	45	180	0.15	27
237510	Pyrex Hvy.	19.1 mm	0.30	3.18	0.33	12.70	0.97
	Wall Tubing	0.750	0.012	0.125	0.013	0.500	0.038	48	28	112	0.24	27
237360	Pyrex Hvy.	22.2 mm	0.40	3.18	0.36	15.88	1.11
	Wall Tubing	0.875	0.0157	0.125	0.014	0.625	0.044	48	30	120	0.28	34
237520	Pyrex Hvy.	25.4 mm	0.40	3.96	0.40	17.48	1.20
	Wall Tubing	1.000	0.0157	0.156	0.0157	0.688	0.047	48	24	96	0.4	38
237530	Pyrex Hvy.	31.8 mm	0.70	3.96	0.40	23.83	1.50
	Wall Tubing	1.250	0.0275	0.156	0.0157	0.938	0.059	48	18	72	0.53	38
237540	Pyrex Hvy.	38.1 mm	0.70