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Finding the best sealing materials for Food Grade Applications

You will find rubber seals across various industries, providing an important element and operating as a vital fixing across a wide range of different applications and equipment.  However, these FDA gaskets must follow strict, set guidelines, in terms of their material...

The Evolution of Gasket Solutions

When we talk about gaskets and the history of a gasket, we must start at the very beginning.  What is a gasket?  Ultimately, a gasket is a manufactured seal that is used to fill the gap/space between two or more surfaces.  Gaskets are typically manufactured by cutting...

How to preserve your gasket

Gaskets and seals don’t last forever. However, they are designed, or they should be, last for a considerable period.  In this sense, it is vital to look at ways to preserve your gaskets in order to avoid any application downtime.  Downtime that involves additional...

Important Design Features of Rubber Sealings

When it comes to designing the perfect rubber sealing, there are a few design features to bear in mind to help achieve the optimum solution.  In this post, we explore these rubber sealing features further and provide information on the benefits and best uses for these...

Optimal Squeeze for an O Ring to be effective

A doughnut-shaped seal that is primarily used to stop liquids and air from escaping or getting into specific spaces is the function and role of an O Ring.  Also known as a mechanical gasket, O rings are designed to fit between a groove and a compression during the...

High-temperatures and O Rings, what you need to know

Fluctuations in temperature and indeed heat is a significant factor across many applications that make use of o rings.  However, what is well known is how destructive heat can be when it comes to compound deterioration.  You are making choosing the ideal o ring...

How to restore your damaged rubber seals

Under the right circumstances and having the right tools to hand, you can restore rubber gasket seals and have them working as good as new in no time.  Rubber gasket seals provide a seal between two separate mechanisms, providing airtight seals to keep liquids and...

The importance of backup rings to O rings

Backup rings are ultimately used to help stop o ring migration, and they achieve this in both static and dynamic fluid power applications as the pressure cycles occur, preventing the extrusion of an o ring in the gap.  Ultimately a backup ring is a rigid ring that...

Gasket manufacturing process explained

Specialist Sealing Products have been providing high-quality gaskets to customers throughout the UK for many years. We pride ourselves in the range of gaskets we have available, suitable for a variety of applications across a range of industries.  Rubber gaskets are...

Designing seals for the food industry

There’s a number of factors to take into consideration when designing seals for the food industry. That’s because seals used within this sector need to work exceptionally hard in all food processing environments where hygiene and health and safety are of the utmost...

Kammprofile Gaskets for Your Industry 

Kammprofile Gaskets are grooved; covered metal gaskets consisting of a serrated metallic core with a soft facing material. The Kammprofile style gasket is mainly used in vessel applications where often the gasket width is limited. Kammprofiles are also often used as an upgrade on applications currently using metal jacketed gaskets due to the improved leak tightness, ease of installation and the possibility of reuse.

The depth and profile of the groove is specially designed to facilitate densification of the facing material and create a very leak tight seal even at relatively low bolt loads and with use on flanges with face imperfections.

Kammprofile Gaskets

Properties and Benefits of Kammprofile Gaskets 

  • Low Sealing Stress required for installation 
  • Suitable for a range of chemicals 
  • Suitable for use in high temperature and high pressure applications 
  • Can be manufactured to suit standard flange applications and vessels 
  • Can be manufactured for use with narrow flanges 
  • Can be used with uneven bolt loading situations 
  • Soft Facing material prevents damage to flange surface 
  • Can be refurbished and re-used 

Kammprofile Styles
Core Design Profiles 

The standard Core design is to have parallel grooves across the sealing face offering the advantages of even stress distribution.  

Alternatively, a convex profile is available reducing the depth of the groove towards the sealing face centre. This alternative style of design ensures a high sealing stress in the centre of the sealing surface making it more effective for low bolt load applications 

Expanded Graphite is the most commonly used facing material but others can also be used, PTFE for chemically aggressive duties and Mica for high temperature applications. 

Kammprofile Styles
Facing Material Maximum Temperature 
Graphite 550C 
PTFE 260C 
Mica 1000C 
Kammprofile Styles

The central steel core can also be manufactured from a large choice of materials 

Winding / Inner / Outer Ring Material Combinations Maximum Temperature 
Carbon Steel 500C 
304 Stainless Steel 550C 
316/L Stainless Steel 550C 
316 Ti Stainless Steel 650C 
321 Stainless Steel 650C 
347 Stainless Steel 650C 
Duplex 800C 
Nickel 200 600C 
Monel 400 600C 
Titanium 350C 
Hastelloy B-2 450C 
Hastelloy C-276 450C 
Inconel 600 950C 
Inconel 625 450C 
Inconel X-750 1000C 
Incoloy 825 450C 
Kammprofile gaskets are often used in heat exchangers and can be manufactured with many bar configurations. The gasket’s core can also be refurbished and reused.
Kammprofile Bar Configurations
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