Sleeves and Washers by Lamons

Description

Lamons sleeve and washer sets, when combined with our sealing/isolation gaskets, complete a Flange Isolation Kit. For a successful flange isolation kit, it is critical to use the appropriate material for your application. Compressive strength, flexural strength and cut- through resistance are key material physical properties that should not be overlooked.

Washer Design Specifications:
Available for bolt sizes = 0.50" (12.70mm) to 2.75" (69.85mm)

• Steel and isolation washers are designed with the same O.D. and I.D.
• Steel and Isolating washers are 0.125" (3.18mm) thick.
• Steel and Isolating washers are designed to fit over isolating sleeve material.

Steel back-up washers need to be supplied with the same O.D. and I.D. as the isolation washer. This graphic illustrates a steel back-up washer and phenolic isolation washer with different O.D. and I.D. sizing.

The compressive load from the steel back-up washer is not equally distributed over the phenolic washer, causing the phenolic washer to crack. If this occurs, the gasket may not receive proper load and electrical isolation will most likely be lost.

		Single Washer Set (per bolt/stud) (1) each 1/8" thick steel ZP washer (1) each 1/8" thick isolating washer (1) each isolating sleeve
"FIK 101" Generally, single washer sets are used for buried applications and may be used to allow the Cathodic Protection (CP) current to reach the nuts and bolts/stud. If desired, the nuts on the opposite side of the cathodically protected flange may be included as part of a Cathodic Protection System.

		Double Washer Set (per bolt/stud) (2) each 1/8" thich steel ZP washer (2) each 1/8" thick isolating washer (1) each isolating sleeve
"FIK 101" Generally, double washer sets are used for applications, where added protection is needed against the possibility of "shorting out" the nuts and bolts. For complete electrical isolation, double washer sets isolate the nuts and bolts from both flanges.