Durlon Gaskets and Sheets

Durlon Economy Compressed Gaskets and Sheets

Manufactured to the highest standards, our Durlon® economy compressed sheet gasket materials are used for general purpose applications. Durlon® materials outperform other traditional economy sheets with their compressibility, recovery, and ability to maintain a tight seal across a wide range of applications.

This superior sealability is proven to significantly lower emission levels, while the homogeneity and consistency of ingredients provides for improved handling. All full-sized economy sheets are date-coded and quality assurance traceable.

Durlon® 5000

This is a commercial grade gasket sheet made of high strength mineral fibers and NBR. It is designed for moderate service conditions and is suitable for a continuous operating temperature of 450°F (232°C). With the ability to handle pressures up to 1000 psi (69 bar) at ambient temperatures, this sheet can be used in environments containing steam, oils, water, mild alkalis and acids, hydrocarbons, and solvents.

Binder

Fibers

Color

Mineral

NBR

Light Green

Temperature Continuous, Max

Pressure, Max

1000 psi (69 bar)

450° F (232° C)

Durlon® 5300

This is a commercial grade compressed non-asbestos sheet gasket material for moderate service conditions. With an ABS Product Design Assessment (PDA) Certificate, its intended service includes marine and offshore applications. Other suitable applications include steam, oil, water, mild alkalis and acids, hydrocarbons and solvents.

Binder

Fibers

Color

Mineral

NBR

Rust

Temperature Continuous, Max

Pressure, Max

1000 psi (69 bar)

450° F (232° C)

Durlon® 7900 / 7925 / 7950

  • Durlon® 7900: This is an economy grade gasket material developed using aramid fiber. It is color-coded with an off-white shade for easy identification. Designed for service ranges and applications that are not particularly severe, the material provides superior protection, temperature resistance, and bolt torque retention.

  • Durlon® 7925: This is an economy grade general service compressed sheet with an NBR rubber binder for mild service in piping, equipment, and OEM applications in steam, hydrocarbons and refrigerants. It is color-coded with a green tone.

  • Durlon® 7950: This economy grade gasket is made from an NBR general-purpose gasket material and is color-coded blue for easy identification. As with Durlon® 7900 and Durlon® 7925, the Durlon® 7950 economy gasket is designed for service ranges and applications that are not severe. It provides superior impenetrability, temperature resistance, and bolt torque retention.

Binder

Fibers

Color

Aramid

NBR

7900 - Off-White
7925 - Green

7950 - Blue

Temperature Continuous, Max

Pressure, Max

1200 psi (83 bar)

450° F (232° C)

Durlon® 7910

This is a well-performing, quality general service gasket for applications requiring an NSF/ANSI 61 Certified gasket material. Durlon® 7910 is a compressed fiber sheet gasket material specially developed to meet the requirement of NSF/ANSI 61 for potable water applications. It contains high strength mineral fibers bonded with nitrile (NBR) synthetic rubber.

Binder

Fibers

Color

Mineral

NBR

White

Temperature Continuous, Max

Pressure, Max

1200 psi (83 bar)

500° F (260° C)

DuraSwell® 7760

This gasket material is designed to react by a controlled swell when in contact with oils and fuels which assists to increase gasket stress in applications that require increased gasket loading that may be previously limited due to insufficient bolting or flange design factors. 

Binder

Fibers

Color

Synthetic

SBR

Off-White

Temperature Continuous, Max

Pressure, Max

1000 psi (69 bar)

400° F (205° C)

 

Durlon Premium Compressed Gaskets and Sheets

Durlon® compressed gasket materials are high-density products that contain the most homogeneous combination of minerals, elastomers, and synthetic fibers. They possess excellent flexibility and recovery that prevents the material from breaking during cutting and installation, and guarantees a tight seal during thermal cycling. An anti-stick coating is applied to both sides of all gaskets to allow for easy installation and removal.

 

Durlon® 8300

This is a multi-service, high strength carbon and NBR gasket sheet. Specifically designed for use in applications that are commonly found in the chemical processing and power generation industries, Durlon® 8300 has very good chemical resistance, and is designed to handle both elevated temperatures and pressures. It can resist oils, water, alkalis, mild acids, and solvents. Additionally, Durlon® 8300 maintains excellent sealability during thermal cycling, even in the presence of steam, hot oil, aliphatic hydrocarbons, natural gas, gasoline, solvents, inert gases, mild alkalis, and acids.

Binder

Fibers

Color

Carbon

NBR

Black

Temperature Continuous, Max

Pressure, Max

2000 psi (139 bar)

650° F (343° C)

Durlon® 8400

This material provides the widest range of chemical resistance of any compressed non-asbestos material available on the market today. It has been designed for use in the pulp and paper, chemical processing, and power generation industries for high pH applications. It can also be used with steam, mild caustics, and acids. This gasket is ideal for pump casings, valves, filters, and flange insulation kits, due to its excellent sealing in challenging chemical services and its superior dielectric breakdown and volume resistivity.

Binder

Fibers

Color

Phenolic/ Mineral

NBR

Gold

Temperature Continuous, Max

Pressure, Max

1500 psi (103 bar)

554° F (290° C)

Durlon® 8500

This gasket is known as a general-purpose “workhorse” material. It is made of a unique blend of high strength aramid and inorganic fibers that make it an excellent gasket in applications where pressure and temperature cycling cause lesser quality gaskets to fail. Durlon® 8500 gaskets passed a modified API 607 fire test in an independent laboratory and provide superior sealing in cycling applications that involve hot oils and steam. They have also passed HVAC service fitness and compatibility tests for most next generation refrigerants and lubricants.

Binder

Fibers

Color

Aramid / Inorganic

NBR

Green

Temperature Continuous, Max

Pressure, Max

1500 psi (103 bar)

548° F (287° C)

Durlon® 8600

This gasket material provides excellent sealability in applications involving steam, condensate, or dilute acids where a “white” gasket material or an SBR binder is required. It can also be used in environments containing water, inert gases, alcohols, alkalis, and many other liquids and gases.

Binder

Fibers

Color

Aramid / Inorganic

SBR

White

Temperature Continuous, Max

Pressure, Max

1500 psi (103 bar)

548° F (287° C)

Durlon® 8700

This is a premium neoprene (CR) gasket designed to provide excellent sealability in applications involving refrigerants, oils, and fuels. This gasket material excels in traditional style HVAC applications, such as refrigerant systems that contain ammonia. It can resist ozone, oils, and non-aromatic solvents.

Binder

Fibers

Color

Aramid / Inorganic

Neoprene

Blue

Temperature Continuous, Max

Pressure, Max

1500 psi (103 bar)

548° F (287° C)

Durlon® 8900

This is a premium grade compressed non-asbestos sheet gasket material specially developed to withstand extreme temperature and pressure applications with good chemical resistance. The Durlon® 8900 gasket material has passed a modified API 607 fire test in an independent laboratory. It is suitable for saturated and superheated steam, oil, dilute acids and alkalis, hydrocarbons, solvents and refrigerants. The Durlon® 8900 contains high strength fibers and graphite fillers bonded with high performance nitrile (NBR) synthetic rubber.

Binder

Fibers

Color

high strength fibers and graphite fillers

NBR

Black

Temperature Continuous, Max

Pressure, Max

2000 psi (138 bar)

752° F (400° C)

Durlon PTFE Gaskets and Sheets

Due to its ability to withstand harsh environment conditions, PTFE gaskets are often used within industries that require resistance to aggressive chemicals, including:

Gasket Resources Inc. manufactures several different types of PTFE materials to accommodate the diverse sealing applications seen in these industries and more. 

All of the following Durlon® PTFE sheet products are available in full sheets or as cut gaskets: 

 

Durlon® 9000 / 9000N

Inorganic fillers homogeneously blended with pure PTFE resins. Durlon® 9000 and 9000N are designed for applications where resistance to highly aggressive chemicals is required. Available in unpigmented white as style 9000N. Both styles 9000 and 9000N, (including branding) conform to FDA requirements.

Filler

Color

Inorganic

9000 = Blue

9000N = White

Temperature Continuous, Max

Pressure, Max

1500 psi (103 bar)

520° F (271° C)

Durlon® 9002

Designed to meet extreme cryogenic system demands.  Durlon® 9002 is an adaptation of the original glass-filled formula to better meet extreme cryogenic system demands. Durlon® 9002 has passed both gaseous, [up to 260°C (500°F) and 52 bar (754 psi)] and liquid oxygen tests performed by BAM Federal Institute for Materials Research and Testing. Durlon® 9002 has also been tested for LOX Mechanical Impact Sensitivity, passing with zero reactions out of twenty tests (0/20) at a test reaction frequency of 0%.

Filler

Color

Inorganic

Blue

Temperature Continuous, Max

Pressure, Max

1500 psi (103 bar)

500° F (260° C)

Durlon® 9200W

Barium sulfate fillers homogeneously blended with pure PTFE resins designed for use in aggressive chemicals. Including caustics, hydrogen peroxide, sodium hypochlorite, nitric acid, liquors, and digester in pulp and paper service. Durlon® 9200W is also used for hydrofluoric acid service at moderate concentrations and temperatures, or where a barium sulfate-filled PTFE gasket material is specified.

Filler

Color

Barium Sulfate

White

Temperature Continuous, Max

Pressure, Max

1500 psi (103 bar)

520° F (271° C)

Durlon® 9400

Carbon fillers homogeneously blended with pure PTFE resins. Durlon® 9400 is designed for piping and equipment within the chemical, pharmaceutical, food, and other general industries, where resistance to highly aggressive chemicals (including hydrofluoric acid) is required. Style 9400 conforms to FDA requirements.

Filler

Color

Carbon

Black

Temperature Continuous, Max

Pressure, Max

1500 psi (103 bar)

550° F (288° C)

Durlon® 9600

Durlon® 9600 is made with only pure PTFE resins. It is suitable for use in steel flanges as well as flanges where a highly compressible gasket is required. Durlon® 9600 is also suitable for sealing flanges with irregular surfaces. It will not exhibit the cold flow problems associated with virgin PTFE or the hardness problems of some other filled PTFE products.

Filler

Color

N/A

White

Temperature Continuous, Max

Pressure, Max

1800 psi (124 bar)

600° F (316° C)

Durlon® 9000 Step Ring Gaskets

Durlon® Step Ring Gaskets are used extensively in Sulfuric Acid plants often found in Phosphate refineries. Applications include 150# RF (Floating) Lap Joint Flanges and Mondi™ Ductile Iron Sulfuric Acid Piping.

The Durlon® Step Ring Gasket is an improved Step Ring Gasket design which has been used in MONDI™ piping since 1985. Durlon’s Step Ring Gaskets have provided excellent service for many acid producers in a variety of demanding applications.

Filler

Color

Inorganic

Blue

Temperature Continuous, Max

Pressure, Max

1500 psi (103 bar)

520° F (271° C)

Durlon Flexible Graphite Gaskets and Sheets

Durlon® Flexible Graphite is unaffected by heat over a wide range of temperatures. It exhibits low electrical resistivity and high thermal conductivity and is suitable for cryogenic temperatures. This product is suitable for applications in the automotive, refining and petrochemical plant processes.

 

Durlon® FGS95

Standard industrial grade sheet containing no binders or resins. Used in industrial applications such as oil refineries, power plants and chemical process plants.

Minimum Temperature

Maximum Temperature, In Air

Maximum Temperature, In Steam

Pressure, Max

-450ºF (-260°C)

850ºF (454°C)

1200ºF (650°C)

3000 psi (207 bar)

Durlon® FGL316

Standard industrial grade sheet laminated with an adhesive bond on both sides of a .002" thick 316 stainless steel foil insert. Used where high performance and handleability are important.

Minimum Temperature

Maximum Temperature, In Air

Maximum Temperature, In Steam

Pressure, Max

-450ºF (-260°C)

850ºF (454°C)

1200ºF (650°C)

3000 psi (207 bar)

Durlon® FGT316

Standard industrial grade sheet mechanically bonded on both sides of a .004" thick 316 stainless steel metal tang core. Used where stresses and pressures are high and improved handleability is important.

Minimum Temperature

Maximum Temperature, In Air

Maximum Temperature, In Steam

Pressure, Max

-450ºF (-260°C)

850ºF (454°C)

1200ºF (650°C)

3000 psi (207 bar)

Durlon® FGM316

Inhibited flexible graphite sheet adhesively bonded to multiple layers of .004" thick 316 stainless steel foil. Used where stresses and pressures are high and improved handleability is important. Fire safe.

Minimum Temperature

Maximum Temperature, In Air

Maximum Temperature, In Steam

Pressure, Max

-450ºF (-260°C)

1022ºF (550°C)

1200ºF (650°C)

3625 psi (250 bar)