Durlon 9000® Gasket Material

durlon-blue

Gasket Resources Inc.’s Durlon® 9000 (blue) and 9000N (neutral) materials are designed for use in process piping and equipment in chemical, pulp & paper, pharmaceutical, oxygen & industrial gases, food & beverage, and other general industrial applications.

These gasket sheets are excellent choices where physical properties such as non-contamination and resistance to highly aggressive chemicals are required.

Durlon® 9000 has been tested, approved and used for chlorine and caustics services. Unlike generic skived PTFE, the various shapes of fillers in Durlon® 9000 are homogeneously blended with pure PTFE resins and do not wick or cause corrosion on flange faces.durlon-white

 

Also, independent testing has shown the fillers in Durlon® 9000 to be more evenly dispersed than filled PTFE with layered construction. Therefore, it has more consistent physical and mechanical properties and does not have voids, separation and chemical compatibility problems found in layered PTFE.

Benefits Versatile & Reliable Seal

  • Recommended for a wider range of severe chemical services than competitive filled PTFE blends
  • Maintains a tighter seal than conventional PTFE gasketing
  • Has a higher bolt torque retention than other filled PTFE  and conventional PTFE gasketing materials
  • Listed in Pamphlet 95 of the Chlorine Institute as an acceptable gasket material for chlorine service
  • Certified for Oxygen Service by the Federal Institute of Materials Testing & Research: Berlin, Germany
  • Conforms to FDA standards
  • Exceptional performance in emissions control

Sheet Size

  • Durlon® 9000 is available in the largest sheet sizes of any conventional or filled PTFE blend gasketing in the industry
  • Allows improved yield with less waste
  • 60″ x 60″ | 60″ x 120″ | 60″ x 180″

Cost Saving Technology

  • Can readily provide large diameter gaskets at extremely competitive prices
  • Eliminates waste and readily available

Contact Seal & Design Inc. for more information about Durlon® 9000 or visit the website here.

PTFE Products

molded-ptfePolytetrafluoroethylene (PTFE) also known as Teflon® is a synthetic fluoropolymer of tetrafluoroethylene. Invented by DuPont, PTFE can be modified and shaped for use as a gasketing material with strong chemical resistance properties.

 

 

ptfe-orings

Advantages of using PTFE include:

  • Not affected to most chemicals.
  • Can be used at temperatures up to 500°F (260°C).
  • The lowest coefficient of friction of any solid material.

Seal & Design offers PFTE Gasket materials from producers such as Inertex® and Garlock® GYLON® as well as PTFE O-Rings.

For more information on usage of PTFE products and other sealing solutions using this material contact Seal & Design or visit our website.

Avoiding Leaks in Multiple Effect Evaporators and Stream Systems

Used frequently in the pulp & paper industry, multiple effect evaporators boil water through a sequence of vessels held at increasingly lower pressures. However, the evaporators dome lids are prone to leaking if the gaskets used are unreliable or a poor fit for the application.

The Solution: Durlon® 9000 series welded gaskets

Seal & Design offers high-quality welded gasket solutions for a variety of chemical applications including:
durlon-blueDurlon® 9000/9000N

Tested and approved for extreme temperatures, caustics, and liquid and gaseous dry-chlorine service, this PTFE model is widely used in the pulp and paper industry.

 

 

Durlon® 9200W

durlon-whiteA blend of Barium Sulfate and PTFE makes this model resistant to the aggressive chemicals such as caustics,hydrogen peroxide, sodium hypochlorite, nitric acid, liquors, and digesters used in pulp and paper processes.

 

 

 

 

To learn more about Durlon® 9000 gaskets contact Seal & Design or visit our website.

Spiral Wound Gaskets in the Power Generation Industry

PowerGen
In today’s changing landscape, there are more options than ever in the power generation industry; from natural gas, fossil fuels, coal, and nuclear to renewable methods such as hydroelectric, wind, solar, and biomass.

To withstand the extreme temperatures and conditions of these applications, manufacturers depend on durable gaskets and sealing solutions.

The gaskets used throughout these plants must be able to handle a range of operating conditions and pressures in order to evenly distribute power across long distances.

Reliable gasket solutions allow companies to easily meet the needs of the communities they serve while staying ahead of the curve in power generation trends.

Spiralwound Gaskets: High-Performance Technology

seals-metallicSeal & Design’s Spiral Wound Gaskets (SWG) are manufactured according to ASME B16.20 standards with quality assurance to comply with API specifications Q1 and ISO 9001:2008.

These gaskets are crafted with a combination of various smart materials: a preformed metal strip alternates with a more compressible, soft filler material, allowing for a highly responsive and extremely tight seal.

To learn more about these innovative components and our spiral wound gasket offerings, contact Seal & Design or visit our website.

Silicone vs EPDM

EPDM

EPDM (Ethylene Propylene Diene Monomer) is a synthetic rubber commonly used in automotive and constructive industries but has a disadvantage of having a lower heat resistance.

Silicone

Silicone is an inorganic polymer used in many industries and applications with the advantage that it can withstand extreme temperatures and keep its physical properties. Silicone is safe to use in the food and beverage industry.

How is Silicone Manufactured?

Depending on the type of silicone being used there are numerous ways to manufacture it. Silicone can come in three forms: LSR (Liquid Silicone Rubbers), RTV (Room Temperature Vulcanisation), HTV (High Temperatur Vulcanisation)

Technical Comparison

  • Temperature – EPDM has a max temperature of 130°C compared to silicone which can reach temperatures of 230°C and 270°C for high-temperature silicones.
  • Elongation – Silicone is seen as the stretchier rubber hence why it is used as vacuum membranes and has a tear resistance and elongation of up to 800% and can stay flexible up to -60°C.
  • Oil Resistance – both materials are prone to swelling
  • Environmental Resistance – Both EPDM and Silicone can withstand general weathering, Ozone, and UV
  • Tear Strength – EPDM is seen as the more durable rubber

Maximum Hot and Cold Temperatures for EPDM and Silicone

Hot Cold
+130°C EPDM starts to degrade -40°C EPDM reaches brittle point
+230°C Silicone starts to degrade -60°C Silicone reaches brittle point

Varying temperatures (hot or cold) have negative effects on all rubbers, particularly when heated.

silicone-heat-diagram

It is important to choose the right material

Silicone is superior when it comes to needing mechanical strength under intense heat and cold resistance as well as being flame resistant. It is important to look at all of the factors that these materials will be subjected to when looking to choose what rubber will be used.

To learn more about Silicone, click here.

To learn more about EPDM, click here.

EMI Shield Seal Gasketing

shield_seal_gasketing3Shield Seal Strip is available in various material combinations and sizes. The versatility of materials and sizes provides assurance of protection against weather conditions including temperature extremes as well as protection against Electro Magnetic Interference and Radio Frequency Interference leakage. The material used conforms to the military specifications.

The elastomers (Neoprene or Silicone) are available with or without an adhesive backing. Adhesive backing on the elastomer is often preferred due to the ease of strip mounting The knit wire meshing is available in various wire materials with Monel and Ferrous material being the most popular. Double Shield Seal materials are available for added shielding effectiveness.

The Shield Seal Strip is used in applications such as electronic cabinets where this type of material is utilized around the doors of the cabinet to seal off stray EMI signals. The shield Seal Strip is also used extensively to shield electronic boxes of various sizes and shapes.

Shield Seal Stip with adhesive backing is a convenient method of getting the optimum combination of materials for engineering or prototype models. In production, it is more convenient and economical to have the complete gasket manufactured with the necessary mounting holes, compression stops, and other special mechanical consideration incorporated. Each gasket would be complete and ready for installation thereby increasing reliability and reducing labor costs during assembly of the end product.

Learn more about Seal & Design’s EMI / RFI offerings