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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...

Storing your gaskets!

A strange headline for a gasket article, we know.  However, it’s an important area and one, which in this sector is often overlooked.  When we think about most products or items in and around our homes and business, we will recognise that most come with manufacturing...

Flange Gasket materials – What you need to know

Getting the most out of flange gasket materials and ensuring the performance of the gasket is not affected when you come to use it, means several things must be taken into consideration.  For example, factors such as their design, how they’re manufactured, installed,...

Spiral Wound Gaskets and Sheet Gaskets

Gaskets come in a range of different shapes and sizes.  All are offering similar functionality; gaskets are produced using a range of different materials to suit a range and a variety of environmental factors, industrial uses, and product requirements.  When it comes...

Benefits of Kammprofile Gaskets

Used to prevent leakage, gaskets are constructed to fit between a range of different sizes and types of surfaces in order to provide the perfect seal.  Typically used in pipes and heat exchangers, gaskets are widely used as industrial sealants.  Kammprofile gaskets,...

Purpose of a Kammprofile Gasket

The ultimate purpose of a gasket is to stop leaks while being able to deal with varying levels of compression.  When it comes to Kammprofile gaskets, these are ideal for standard pipeline and heat exchanger applications.  As due to their grooved metalcore, with a...

Are your gaskets completely compliant?

In industries where gaskets are not just important but essential, there are numerous challenges to be faced and considerations to take on board.  This is especially true when it comes to making sure this “essential” element is also compliant.  With the implementation...

Everything you need to know about Manway Gaskets

When it comes to manway gaskets, we want to keep things simple, introducing them as the small sealing ring found in hatches/openings that are constructed for large tanks. Openings which give people access to the inside of the aforementioned tanks and vessels. The...

COMBINATION SET PACKINGS

This product, as the name implies, are packing sets manufactured using a combination of material styles designed to meet specific application requirements

MODEL 102

A combination set of packing rings specifically designed for soot blowers. It comprises end rings in braided expanded pure graphite reinforced with stainless steel wire, plus intermediate rings of die moulded expanded graphite

Soot Blower Duties

Maximum Operating Temperature

Steam : +550⁰C

Oxidising : +450⁰C

Minimum Operating Temperature -200⁰C

Maximum System Pressure : 250 bar

Maximum shaft Speed : 20 m/s

Typical Applications

  • Designed primarily for soot blowers.
  • Can be used on travelling carriages, swivel tubes, rotary blowers and valve stems

Material Properties

  • Compatible with media in the range pH 0-14 excluding strong oxidising agents

Main features

  • All rings are manufactured to specific densities to provide the best possible performance
  • Good compressibility and recovery for high integrity sealing
  • Rings do not age or creep under hot or cold operating conditions
  • Inherent flexibility for working efficiently on small diameter shafts and spindles
  • Stainless steel reinforced end rings to withstand pressure surges

MODEL 103

A combination set of packing rings specifically designed for bowl mill worm shaft applications. It comprises rings of braided expanded pure graphite with separator gasket rings of flexible pure graphite, usually 2 mm thick. A typical set will consist of four braided graphite rings with a separator ring top and bottom and in-between each one, five in total

Bowl Mill Worm Shaft Duties

Maximum Operating Temperature

Steam : +550⁰C

Oxidising : +450⁰C

Minimum Operating Temperature -200⁰C

Maximum System Pressure : 250 bar

Maximum shaft Speed : 20 m/s

Typical Applications 

  • Designed primarily for bowl mill worm shaft applications at thermal power stations  
  • Can be used for valve stems 
  • Suitable for use with coal dust, hot dry ash, flue gas, hot air, gas and oil, superheated and saturated steam 

Material Properties 

  • Compatible with media in the range pH 0-14 excluding strong oxidising agents 

Main features 

  • Dimensionally stable under extreme operating conditions 
  • Inherent resilience for high integrity sealing 
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