Metal Jacketed Gaskets

Metal Jacketed - Group Image 1

A metal jacketed gasket is characterized by its metallic outer shell paired with a compressed fiber filler, which can be either metallic or non-metallic. In this design, the filler material provides resilience, while the metal jacket safeguards the filler, offering resistance against pressure, temperature fluctuations, and corrosion. 

The engineering of our metal jacketed gaskets is focused on achieving exceptional sealing performance, rendering them a perfect choice for scenarios characterized by extreme temperatures and elevated pressures. Whether dealing with corrosive settings or needing dependable sealing solutions for applications like heat exchangers, our gaskets are meticulously crafted to cater to your precise requirements. They consist of a robust metal jacket that encases a soft filler material, providing the perfect balance of strength and resilience for your sealing requirements. 

Metal Jacketed gaskets are manufactured following industry standards such as ASME B16.20 to suit ASME B16.5, ASME B16.47 Series A & B Flanges and customized size  ensuring compliance with recognized gasket design and performance benchmarks. 

Metal Jacketed Gaskets Characteristics

Our Metal Jacketed Gaskets offer the following performance advantages: 

  • High-Pressure and High-Temperature Capabilities: These metallic gaskets excel under extreme conditions, ensuring reliable seals and system integrity, especially in applications with high temperature and pressure requirements. 
  • Effective Sealing Performance: Superior sealing prevents fluid or gas leakage, minimizing the risk of downtime, a crucial factor in applications like heat exchangers. 
  • Resistance to Corrosive Environments: Ideal for industries with aggressive media, like chemical processing and petrochemical sectors, where opposition to corrosion and chemicals is crucial. 
  • Longevity and Durability: Known for exceptional lifespan and reduced maintenance, particularly in applications with high temperatures and high pressure. 
  • Application-Specific Advantages: Tailored for industry-specific needs, from oil and gas to power generation and ring joint applications

Material Selection 

Selecting suitable materials is paramount when it comes to metal jacketed gaskets. The choice of jacket and filler materials significantly influences the gasket’s performance. Common materials for jackets include stainless steel, carbon steel, and Monel, while filler materials may include flexible graphite, PTFE, and ceramic fiber. 

Considerations for Material Selection: 

  • Operating Environment: Temperature, pressure, and the nature of the media being sealed.
  • Chemical Compatibility: PTFE and ceramic fiber fillers are ideal for handling aggressive substances. 
  • Corrosion Resistance: Stainless steel jackets excel in corrosive environments.
  • High-Temperature Performance: Flexible graphite fillers offer excellent sealing in high-temperature applications.

At Asian Sealing Products, we are committed to delivering the highest quality metal jacketed gaskets that meet and exceed industry standards. Contact us today to discuss your sealing needs and experience our gaskets’ superior performance and reliability in demanding applications.

 Metal Jacketed Gaskets Uses 

Here are some common uses for metal jacketed gaskets: 

  • Flanged Connections 
  • Heat Exchangers 
  • Pressure Vessels 
  • Chemical Processing 
  • Refining and Petrochemical Plants 
  • Power Generation 
  • Pipeline Systems 
  • Mining and Minerals Processing
Types of Metal Jacketed Gaskets 

We offer a range of metal jacketed gaskets from IDJ1 to IDJ8 to suit diverse industrial requirements, including:

 

Gasket Type Construction Uses Suitability
Double Jacketed
Gaskets
Inner and outer metal
jackets with a soft
filler material, often
graphite or PTFE
Heat exchangers.
Pressure vessels.
High-temperature
applications.
Sealing in fluctuating
conditions.
Exchanger
Gaskets (Double
Jacketed)
Dual metal jackets
with a filler material
provide robust sealing
in demanding thermal
conditions
Sealing joints in heat
exchangers
Ideal for applications
requiring high
temperature and
pressure resistance.
Double Jacketed
Corrugated
Gaskets
It combines the
features of double
jacketing and groove,
providing adaptability
and resilience
Heat exchangers.
Flanged connections.
Suitable for irregular
or non-smooth flange
surfaces.
Resilient under
fluctuating conditions.
Corrugated Metal
Gaskets (CMG)
Thin metal layers
corrugated for
flexibility, offering
adaptability to uneven
or non-standard
flanges
Flanged joints.
Irregular or
non-smooth flange
surfaces.
Effective in
applications with
variable conditions.
Sealing solutions for
irregular flanges.
Single Jacketed
Gaskets
Single metal jacket
with a soft filler
material, offering a
balance of sealing
performance and cost
Pressure vessels.
Flanged connections
Suitable for
general-purpose
applications.
Moderate
temperature and
pressure resistance.
Product Details
  • Economical
  • Easy to handle and install
  • Suitable for high temperatures
  • Suitable for narrow flanges
  • Good blow-out resistance
  • Comprising of soft filler encapsulated by a metal jacket and insert. Designed for use on high temperature and pressure applications
  • Economical
  • Basic with added strength from metallic jacket
  • Metal jacket provides increased gasket stability and blow-out resistance
  • Chemical resistance to a wide range of media can be accommodated by a selection of a suitable metals
  • Double-jacketed gaskets are probably the most commonly used style of gaskets in heat exchanger applications
  • These gaskets are available in virtually any material that is commercially available in 26-gauge sheet
  • Double-jacketed gaskets are also extensively used in standard flanges where the service is not critical
  • Since most double-jacketed gaskets are custom made, there is virtually no limit to size, shape or configuration in which these gaskets can be made
  • The double-jacketed corrugated gasket is an improvement on a plain-jacketed gasket
  • The corrugations on the gasket will provide an additional labyrinth seal
  • Provides the advantage of reducing the contact area of the gasket, enhancing its compressive characteristics
  • A double-jacketed corrugated gasket still relies on the primary seal on the inner lap
  • The Corrugated Metal Gaskets family of products are the standard in respect to corrugated metal gasket technology
  • These gaskets are an excellent choice for 150 and 300 class ASME flanges where available bolt loading is minimal
  • The substrate geometry promotes recovery and resilience through thermal cycles and extended service life
  • Corrugated Metal Gaskets can be direct replacements for Spiral Wound Gaskets
  • Eliminates inward buckling issues while creating a seal at moderate flange stresses
  • Constructed of soft filler completely enclosed in a single jacket
  • Ideal for applications where the width does not permit the use of a double-jacketed gasket
DOUBLE JACKETED GASKETS - Filler Materials and Temperature Requirements
Sl.No Filler Material Temperature Range Maximum Working Pressure
1 Graphite min 200°C – max 450 °C 250 bar
2 PTFE min 200°C – max 240°C 100 bar
3 Aramide (CNAF) min 70°C – max 220°C 150 bar
DOUBLE JACKETED GASKETS – Jacketed Materials and Temperature Requirements
Sl.No Jacketed Material Maximum Temperature
1 Aluminium (Al) 350°C
2 Carbon Steel 500°C
3 Copper (Cu) 310°C
4 Hastelloy B-2 450°C
5 Hastelloy C-276 450°C
6 Inconel 600 1000°C
7 Inconel 625 450°C
8 Incoloy 800 800°C
9 Inconel X-750 1000°C
10 UNS N04400 / MONEL 400 450°C
11 Titanium Gr.2 350°C
12 Incoloy 825 450°C
13 Nickel 200 315°C
14 Soft Iron 500°C
15 Bronze 350°C
16 Brass 250°C
17 UNS S30403 (SS 304L) / UNS S30400 (SS 304) 650°C
18 UNS S31603 (SS 316L) / UNS S31600 (SS 316) 800°C
19 UNS S32100 / SS 321 800°C
20 UNS S34700 / SS 347 800°C
21 UNS S31803 / DUPLEX S31803 800°C
22 Super Duplex 600°C
23 UNS S31254 / SMO 254 600°C

FAQ's

Metal gaskets may leak due to inadequate surface preparation, improper installation techniques, insufficient bolt torque, flange misalignment, or damage to the gasket material.

 

A metal gasket seals by utilizing the inherent strength and deformability of the metal material to create a tight seal between two mating surfaces. When compressed between the flanges, the metal gasket undergoes plastic deformation, filling in surface imperfections and creating a barrier that prevents fluid or gas leakage.

In most cases, metal gaskets do not require additional sealant or gasket compound. Metal gaskets’ ability to deform and conform to flange surfaces, provides adequate sealing without the use of sealant. However, in certain applications or when specifically recommended by the manufacturer, a sealant or gasket compound may be used. It is important to follow the manufacturer’s recommendations and guidelines regarding the use of sealant, if necessary.

Our metal jacketed gaskets offer versatility in manufacturing with the ability to adopt various configurations. These gaskets commonly incorporate a non-asbestos, high-temperature gasket material filler suitable for applications reaching up to 900°F (482°C). For elevated temperatures or specific applications, alternative soft fillers are also accessible. The standard metals utilized in crafting jacketed gaskets include aluminum, copper, brass steel, nickel, Monel®, Inconel®, and stainless steel variations such as types 304, 316, 321, 347, and 410. The selection of jacket metal is contingent upon the specific service conditions encountered.