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·Page 14 ·Back Cover
 
Pyrex CORNING GLASS WORKS Pyrex
Pyrex No. 441
Specifications for
No. 441 PYREX Insulator

Dry Flashover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .155 kv.
Wet Flashover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95 kv.
Leakage Distance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24"
Arc Distance,--Wet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7"
Size of Pin Hole . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 3/8"
Minimum Length of Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9"
Net Weight, each . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12.86 lb.
Weight, each, packed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16.67 lb.
Number in Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .¹six
Type of Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .box

Electrical characteristics were measured under A.I.E.E. standard conditions. Voltages were determined by sphere gap measurement.
¹ Also available in packages of three at slight extra cost.