Heyco® Sealing Washers

Features

Will Fit These Electrical Fitting NPT Trade Sizes	PART NO.	DESCRIPTION	PART DIMENSIONS
	Black		A Inside Diameter		B Outside Diameter		C Thickness
	Black		in.	mm.	in.	mm.	in.	mm.
1/4	3258	SW 1/4	.54	13,7	.80	20,2	.13	3,2
3/8	3259	SW 3/8	.67	17,0	1.01	25,5
1/2	3260	SW 1/2	.85	21,6	1.24	31,5
3/4	3261	SW 3/4	1.03	26,2	1.50	38,1	.14	3,4
1	3262	SW 1	1.28	32,5	1.77	45,0	.18	4,6
1-1/4	3264	SW 1-1/4	1.66	42,2	2.16	54,8	.16	4,1
1-1/2	3265	SW 1-1/2	1.86	47,2	2.44	62,0	.16	4,1
2	3257	SW 2	2.32	58,9	2.93	74,4	.18	4,6

Standard color black.

Features

For use with Heyco-Flex fittings.
Liquid tight, dust tight, and oil tight at enclosure.
Suitable for wet locations requiring a separate gasket between the box and fitting.
Also suitable for other panel sealing applications.
Easy to install since washers seal off on the perimeter, not on the connector threads.
Special double sealing ridges compensate for minor unevenness at enclosure.

Flammability Rating94V-0

Material	Thermoplastic Elastomer
Temperature Range	-22°F (30°C) to 221°F (105°C)

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