Home > Products > Gaskets > Double Jacket Gaskets > Double Jacket Gasket
 Double Jacket Gasket

Double Jacket Gasket


Jacketed is made by hands, and welded.

Soft pliable core within thin metal covering.

Wide choice of jacket and filler materials

Send Inquiry
PDF Download
  • Specification
  • You may also like


Double jacket gasket with soft pliable core, surrounded by a metal jacket that totally or partially encloses the filler material. Partition bars can be incorporated , integrally or welded into the gasket.

Typical applications

>Heat exchangers

>Gas mains

>Boiler and fues


> Valve bonnets


Jackets: Soft iron, low carbon steel, stainless steel, nickel, copper, aluminium, brass, titanium, monel, etc.Filler: Expanded graphite, ceramic, PTFE, etc.

Metal Jacketed Gasket Normal Shapes

How to order?

>To industry, national and international standards, or customer specification.

>Materials of jacket and filler selected to suit operating conditions.

Please specify the form of the bars when ordering: Welding allowed or not allowed


The gasket thickness tolerance is (+0.03 inch., -0.000 inch) (+0.8mm, -0.0mm)

>For gaskets NPS 1/2 through NPS 24, the outside and inside diameter tolerances are +0.06 inch, -0.0 inch (+1.5mm, -0.0mm);

>There are no Class 400 flange for NPS 1/2 through NPS 3 (Use Class 600);

>There are no Class 600 flanges for NPS 1/2 through NPS 2-1/2 (Use Class 1500);

>There are no Class 2500 NPS 14 and larger

Metal Jacketed Gaskets with Corrugated Graphite Covering

SUNWELL SEALS provide the corrugated graphite covering on both surfaces of the double jacketed gaskets.