Neoprene Faced Phenolic Gaskets have been used as standard “flat” isolating gaskets in the oil and gas industries for many years. Soft neoprene rubber sheets are factory applied to both sides of a laminated phenolic retainer providing an effective sealing surface. The temperature limit of these gaskets is approximately +175º F. (+80º C.).
In view of the sealing performance and material choices of YZT-110, YZT-120 and YZT-150 isolating gaskets, if services match, we recommend YZT-110, YZT-120 or YZT-150 insulating gaskets to replace rubber faced phenolic gaskets
Gasket Type of Neoprene Faced Phenolic Insulating Gaskets:
Type E (Full Face Gasket)
This gasket kit provides complete protection of both flange faces. The gasket has same outside diameter of flanges. This feature will prevent collection of foreign matter between the flange faces to ensure complete cathodic isolation.
Type F (Ring Gasket)
This gasket is manufactured to fit only the raised face surface of the flanges. Outside diameter of the gasket is designed to be slightly less than the inside diameter of the bolt circle. It is recommended that the flanges be wrapped to prevent foreign material from "shorting out" the flanges.
Performance of Neoprene Faced Phenolic Insulating Gaskets
|
Material
|
Dielectric Strength
|
Water Absorption
|
Compressive Strength
|
Maximum Temperature
|
|
Plain Faced Phenolic
|
> 10 KV/mm
|
0.6%
|
51.5 MPa
|
107 ° C
|
|
Neoprene Faced Phenolic
|
> 10 KV/mm
|
0.6%
|
51.5 MPa
|
79 ° C
|
|
Note: Special & high temperature materials are available upon request.
