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Heyco® Foam Washers

  • Part Numbers and Specifications
  • Features
Will Fit These
Electrical Fitting
NPT Trade Sizes
PART NO. DESCRIPTION PART DIMENSIONS
Black  A
Inside Dia.
B
Outside Dia.
C
Thickness
in. mm. in. mm. in. mm.

.125˝ (3,2 mm) Thickness

1/4 1970 HFW 500 .500 12,7 .820 20,8 .125 3,2
- 1971 HFW 625 .625 15,9 .940 23,9
- 1972 HFW 750 .750 19,1 1.060 26,9
1/2 1973 HFW 875 .875 22,2 1.185 30,1
1980 HFW 875 DD*
- 1974 HFW 1000 1.000 25,4 1.390 35,3
3/4 1982 HFW 1125 1.125 28,6 1.515 38,5
1981 HFW 1125 DD*
- 1983 HFW 1250 1.250 31,8 1.875 47,6
1 1998 HFW 1375 1.375 34,9 2.000 50,8

.190˝ (4,8 mm) Thickness

1/4 1975 HFW 1/4 .480 12,2 .860 21,8 .190 4,6
1/2 1977 HFW 1/2 .840 21,3 1.200 30,5
3/4 1978 HFW 3/4 1.050 26,7 1.500 38,1
1 1979 HFW 1 1.300 33,0 1.700 43,2

Standard color black.
*Feature flats across ID: PN 1980 - .750" (19,1 mm), PN 1981 - .965" (24,5 mm)

  • For use with Heyco-Flex fittings.
  • Provide additional degree of protection for a variety of fittings.
  • Compensate for non-ideal mounting surfaces in application.

QuickSpecs

Material EPDM
Temperature Range -4°F (-20°C) to 140°F (60°C)
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