Laboratory Glass Tubing
Corning Borosilicate Tubing
Pyrex Medium Wall Tubing					NEWPORT INDUSTRIAL GLASS, INC.
Pyrex 7740 Medium Wall Tubing					GLASS TUBING AND ROD DIVISION
Low-Expansion Borosilicate Glass Tubing					( fka HACKER GLASS COMPANY)
Clear Borosilicate Glass Tubing
Medium 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
237300	Pyrex Med.	6.3 mm	0.30	1.19	0.10	3.96	0.51
	Wall Tubing	0.250	0.012	0.047	0.004	0.156	0.020	48	276	1104	0.03	32
237310	Pyrex Med.	12.7 mm	0.30	1.57	0.15	9.55	0.61
	Wall Tubing	0.500	0.012	0.062	0.006	0.376	0.024	48	96	384	0.08	32
237315	Pyrex Med.	15.9 mm	0.30	1.57	0.15	12.73	0.61
	Wall Tubing	0.625	0.012	0.062	0.006	0.501	0.024	48	75	300	0.11	32
237320	Pyrex Med.	19 mm	0.30	1.57	0.15	15.90	0.61
	Wall Tubing	0.750	0.012	0.062	0.006	0.626	0.024	48	61	244	0.13	32
237330	Pyrex Med.	25.4 mm	0.41	2.39	0.23	20.62	0.86
	Wall Tubing	1.000	0.016	0.094	0.009	0.812	0.034	48	31	124	0.26	32
237340	Pyrex Med.	31.8 mm	0.71	2.39	0.23	26.97	1.17
	Wall Tubing	1.250	0.028	0.094	0.009	1.062	0.046	48	24	96	0.33	32
237350	Pyrex Med.	38.1 mm	0.71	2.39	0.23	33.32	1.17
	Wall Tubing	1.500	0.028	0.094	0.009	1.312	0.046	48	18	72	0.41	30
237370	Pyrex Med.	44.5 mm