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DN Style Gasket Sizing Chart

Since the size of the gasket is based on the size of the pipe fitting, it is difficult to determine the size of the gasket based on it's dimensions. The following are nominal dimensions for Standard DN Style Gaskets and are for reference only.

SIZE	I.D.	O.D.	TH
DN10/4.5	12MM	20MM	4MM
DN15/4.5	18MM	26MM	4MM
DN20	23MM	33MM	5MM
DN25	30MM	40MM	5MM
DN32	36MM	46MM	5MM
DN40	42MM	52MM	5MM
DN50	54MM	64MM	5MM
DN65	70MM	80MM	5MM
DN80	84MM	94MM	5MM
DN100	104MM	114MM	5MM

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