Metal Jacketed Gaskets

The metal jacketed gaskets consists of a metal covering around a flexible metal filling wich makes it adaptable when sujected to pressure. The metal covering provides resistance to high temperatures, pressures, chemical attack, mechanical and other operating conditions on wich its choice depends. The filling also provides the flexibility and comprensibility conditions that are required for simple, perfect sealing.

This configuration makes the gasket ideal for use the chemical, petrochemical industries and industry in general, where the pressure, temperature and corrosion conditions are determining factors in achieving suitable sealing action.

Dimensions and shapes

Metal jacketed gaskets are manufactured in a very range of shapes: circular, oval, rectangular, square and rhomboid etc.

These gaskets do not have any dimensional limitations, nevertheless, in function of the commercial with of the materials employed, it is sometimes necessary to employ welding, wich is performed in with welding procedures that have been officially approved by specialised companies, with the certification being available to ur costumers.

The standard thickness is 3.2 mm. although depending on usage, this may be increased or decreased.

They are manufactured to order and following current standars.

Materials

Metalic material	Filling material
Carbon steel	Ceramic fibre
AISI 502 (4-6% Cr. _ % Mo)	Graphite
AISI 304 – 304L -304H	Teflon
AISI 316 – 316L	Asbestos free compressed fibre
AISI 316 Ti
AISI 317L
AISI 321
AISI 409 – 409L
AISI 410
AISI 430
Cobre
Latón
Aluminio
ALLOY 400 – MONEL
ALLOY 600 – INCONEL
Titanio
ALLOY 200 – NIKEL

Profiles

IntercambiadoresOther aplications

FIGURES

Heat exchangers are the most usual application for metal jacketed gaskets since both the operating conditions and desing are optimum for this type of equipment

SINGLE PIECE GASKETS

In single pieces gaskets, both the crown and the ribs are manufactured from the same metal plate without employing any welds whatsoever.

The unions between the crown and the ribs, as well as between the ribs themselves are manufactured with the radius required by the costumer, which permits perfect mating to the box.

If the metal plate is not large enough o produce the gasket without welds, then, under no circumstances, would these made in the area of the crown-rib unions or in the rib intersections.

WELDED RIBS

The crows of these gaskets may be manufactured in a single piece (provided that the size of metal plate permits this) however, the ribs are welded to the crown and to each other by spot welding.

SINGLE PIECE RIBS WELDED TO THE CROWN

When this type of gasket is possible (if the metal plate size permit it) it is manufactured with a single piece crown, together with the ribs, whatever shape they have, and with the radi as specified by the customer, however, the ribs are spot welded to the crown.

Metal jacketed gaskets also find application in the sealing in flat face surface of valve bonnets, gas, piping, boilers, ovens, flanges, reactors, motors, and all types of pressure vessels.

Transmecánica can produce these gaskets in accordance with any customer specification as well as current standars.

CURRENT STANDARS

These are used to seal flanged joints. When the gasket is tightened between two flanges, the central part a compression which stabilizes the seal.

When employed with various shapes and sizes of flanges, they are efficient in compensating for inexact or incorrect aligment

SPECIAL GASKETS

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Always up-to-date standars on our web site. Click here to consult us.

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