NEW

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...

BREWERY MANWAY and TANK DOOR SEALS

Also referred to as Tank Lid and Manlid Seals this product is supplied to applications using IBC Tanks, Vessels, Manways and Access Doors such as the Brewery, Dairy, Pharmaceutical and Chemical Process Industry’s for filling and storing many different types of liquids and chemicals. We supply many different shapes and sizes and profile sections in a variety of rubber materials including Nitrile, EPDM, Silicone, Natural and Viton, all of which are available in Food Quality approved grades meeting the necessary specifications and standards required in these industries.

Below are the specific moulded sizes and profile sections that are held in stock in the different material categories. Other sizes, shapes and profiles can be extruded and Vulcanise jointed to meet any dimensional and profile fit you may require

spiral wound gasket styles
Manway Door Profiles

TANK LID PACKINGS 

The sealing of tank lids, furnace doors and crucible lids may appear to be a less demanding application due to the lack of component movement, but these static duties bring their own challenges. 

To meet demands such as the extreme temperatures of lid sealing on aluminium smelting crucibles or chemical resistance for sealing tank lids on hazardous substance shipping tanks, we offer the latest yarn technology to meet both application demands and user safety. 

Using a variety of core and braid materials plus different manufacturing techniques, products are developed to suit specific application demands, whether that is an economic single use tank lid seal or a longer-term option for effective sealing of furnace doors 

We have a complete and comprehensive range of tank lid packing materials for tank, crucible and furnace door sealing applications.  

There are two different packing designs Tankatite and Torrlid, each having its own material combination variations to offer a range of options for individual applications, enabling the end user to choose the performance / cost combination best suited to meet their requirements 

Tankatite® 

Our comprehensive range of tank lid packings developed to meet the increasingly stringent international regulations that cover the maritime transport of chemical and potentially hazardous cargoes. Extensions to the range cover the requirements of road and rail transport, plus static or mobile tank containers 

TorrLid® 

A specialised high-temperature product designed for high temperature static duties such as crucible lids in metal smelting applications and the sealing of furnace doors 

Tankatite 250

Tankatite 250 

A state of the art packing design specifically developed for production in rectangular sections and at smaller sections to suit the smaller tank lid recesses of road and rail tankers. 

Prime Features 

  • Easy to cut and fit in small section lid recesses 
  • Tough, resilient and long-life product 
  • Withstands repeated opening/closing cycles 
  • Controls emission levels from tanks 
  • Protects tank contents from contamination 
  • Withstands arduous cleaning systems

Typical Applications  

Seals to fit smaller tank lid recesses of road and rail tankers. 

Chemical Properties 

Compatible with media in the range pH 1-13 at normal operating temperatures, excluding fluorine gas 

How Supplied 

As length form packing or endless rings to fit popular lid recess dimensions 

Static Duties on Tank Lids 

Maximum Operating Temperature   :  +100⁰C 
Minimum Operating Temperature    :   -30⁰C 
Maximum Tank Pressure :  50kPa / 0.5bar (7psi) 

Tankatite 440

Tankatite 440

A resilient elastomeric core, spirally wrapped with PTFE tape and surrounded by successive braided jackets of inert polypropylene yarn. Specially reinforced corners are incorporated to build the section to the required packing size. The braided structure is spirally wrapped with further layers of PTFE tape to provide an impermeable barrier to liquids and gases, then finally enclosed in a robust, abrasion resistant braid of PTFE yarns.

Prime Features

  • Gas-tight environmental seal
  • Protects cargo from sea water ingress
  • Withstands repeated opening/closing cycles
  • Unaffected by steam and other tank cleaning systems
  • Suitable for smooth recesses in stainless steel lips as well as those with rougher surface finishes.

Typical Applications

Sealing of tank lids, main hatches, inspection and cleaning covers on tankers carrying all known bulk liquid cargoes in all International Maritime Organisation (IMO) classes.

Chemical Properties

Compatible with media in the range pH 0-14 including all known bulk cargoes in all IMO classes

How Supplied

As length form packing or endless rings to fit specific tank lid recess dimensions

Static Duties on Tank Lids

Maximum Operating Temperature : +120⁰C
Minimum Operating Temperature : -50⁰C
Maximum Tank Pressure : 70kPa / 0.7bar (10psi)

Tankatite 660

Tankatite 660 

A heat resistant grade of Tankatite. Similar in construction to Tankatite 440, but with braided jackets of high quality glass fibre yarns instead of polypropylene. 

Prime Features 

  • Gas-tight environmental seal for heated cargoes 
  • Protects cargo from sea water ingress 
  • Withstands repeated opening/closing cycles 
  • Unaffected by steam and other tank cleaning systems 

Typical Applications  

Seals for tank lids that cover heated cargoes, such as molten bitumen, which need to be transported at elevated temperatures to prevent solidification in the tank. 

Chemical Properties 

Compatible with media in the range pH 0-14 including all known bulk cargoes in all IMO classes. 

How Supplied 

As length form packing or endless rings to fit popular lid recess dimensions 

Static Duties on Tank Lids 

Maximum Operating Temperature   :  +230⁰C 
Minimum Operating Temperature    :   -50⁰C 
Maximum Tank Pressure :  60kPa / 0.6bar (9psi) 

Tankatite 880 ACR

Tankatite 880 ACR

A new economical grade of general purpose lid packing for tank containers and , road and rail tankers, especially where the packing needs to be changed after each trip/cargo.

It is a white packing constructed from spun acrylic fibre yarns impregnated with PTFE suspension. Dense but flexible, it is easy to cut and fit, and to remove when it needs to be replaced.

Prime Features

  • Excellent value for money
  • Contains no grease or oil – no lubricant to squeeze out when packing is compressed
  • Easy to cut and fit in small section lid recesses
  • Easy to remove when it needs replacing
  • Protects tank contents from external contamination
  • Approved, specified and used by major tank container operators world wide

Typical Applications

Seals for lids and fittings on tank containers for road, rail or static use that contain chemicals, petroleum products or foodstuffs. This general purpose lid packing for tank containers, road and rail tankers, proves invaluable when the packing needs to be changed after each trip/cargo.

Chemical Properties

Compatible with media in the range pH 2-12

Compatible with a full range of cargoes including chemicals, petroleum products and foodstuffs

How Supplied

Available in popular sections from 10 mm up to 20 mm in coils of 50 metres and also as cut lengths to suit individual lids

Static Duties on Tank Lids

Maximum Operating Temperature : +250⁰C
Minimum Operating Temperature : -50⁰C
Maximum Tank Pressure : 200kPa / 2bar (29psi)

Tankatite 880 ACR

Tankatite 880 Super

A clean, length form packing manufactured from an inert reinforced polypropylene yarn, impregnated with PTFE and an inert resin to provide a non-stick surface.

It contains a resilient elastomeric core for improved performance.

Prime Features

  • Excellent value for money
  • Equivalent performance to moulded rubber seals
  • Easy to cut and fit in small section lid recesses
  • Excellent sealing capability on repeated opening/closing cycles
  • Controls emission levels from tanks
  • Protects tank contents from external contamination
  • Withstands arduous cleaning systems

Typical Applications

Seals for lids and fittings on tank containers for road, rail or static use, that contain chemicals, petroleum products or foodstuffs. Also for lids and fittings on dedicated tanks that handle aggressive cargoes under an inert gas blanket. It readily replaces moulded rubber sealing components and low cost packings.

Chemical Properties

Compatible with media in the range pH 0-14

Totally compatible with a full range of cargoes including chemicals, petroleum products and foodstuffs

How Supplied

As coil form packing and endless rings in sections to fit popular lid recess dimensions

Static Duties on Tank Lids

Maximum Operating Temperature   :  +120⁰C

Minimum Operating Temperature    :   -50⁰C

Maximum Tank Pressure                  :  200kPa / 2bar (29psi)

TorrLid 162B

TorrLid 162B 

This specialised product has been developed specifically as a lid seal to hold a vacuum within crucibles of molten aluminium.  

It features a resilient hollow-centred core of ethylene-propylene elastomer, over-braided with a jacket of filament glass yarns. The exterior surface is coated with a layer of red-coloured silicone rubber. 

Prime Features

  • Developed specifically as a vacuum seal for aluminium crucible lids 
  • Readily withstands the temperatures and compressive forces involved 
  • Tough silicone rubber coating provides abrasion resistance 
  • Withstands repeated opening/closing cycles 

Typical Applications 

This exceptionally well-proven product is used worldwide as a vacuum lid seal for crucibles containing molten aluminium. It has also proved a great success on new plant using the latest AP35 technology. 

How Supplied 

Manufactured to order, in a wide range of sections and lengths to meet specific customer requirements 

Static Duties with Crucible Lids 

Maximum Working Temperature : Suitable for holding a vacuum over molten aluminium in  crucibles.(please consult SSP) 
Pressure Range : From partial vacuum up to 0.9 MPa / 9bar (131 psi) 

TorrLid 297

TorrLid 297

This highly specialised product features a resilient, hollow-centred elastomeric core that resists higher temperatures than the ethylene-propylene used in TorrLid 162B.

The core is over-braided with a jacket of filament glass yarns, and the exterior surface is then coated with a proprietary graphite dispersion.

Prime Features

Developed as a higher temperature vacuum seal for the lids of crucibles as used in specific aluminium smelting plants

Readily withstands the temperatures and compressive forces involved

Withstands repeated opening/closing cycles

Typical Applications

This well-proven product is used as a vacuum lid seal for crucibles containing molten aluminium. It is particularly popular with aluminium plants in the southern hemisphere.

How Supplied

Manufactured to order, in a wide range of sections and lengths to meet specific customer requirements

Static Duties with Crucible Lids

Maximum Working Temperature : Suitable for holding a vacuum over molten aluminium in crucibles.(please consult SSP)
Pressure Range : From partial vacuum up to 0.9 MPa / 9bar (131 psi)

Manway Door Profiles

These are standard sizes and profiles readily available from stock in many differnet material options.

Contact Us
close slider

Your Details

Let us know how to get back to you.


How can we help?

Feel free to ask a question or simply leave a message.