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Armstrong Gasket

Cut Gaskets 

When it comes to cutting gaskets from armstrong materials there are several ways to get the job done. Traditional "clicker presses" are great for larger quantity jobs and have been the standard in the industry for years. The biggest down side to using clicker presses is tooling must be made to produce a gasket. Just as CNC lathes revolutionized the machining industry, laser cutters, routers and water jet are all computer controled ways of cutting a gasket with out the need for tooling or dies.

Gasket material cutter

Non-Asbestos Armstrong Gasket Material Choices:

STYLE 0782 Plant Fiber Rubber Beater Saturated (Armstrong CS-301)

Made from cellulose fibre, cork, and styrene butadiene rubber (SBR). A tendency to swell moderately without disintegrating in water or oil makes this fibre sheet a dependable seal in services not involving aromatic fuels and solvents. Tensile strength minimum 700 PSI. Temperatures to 300°F .

STYLE 0783 Plant Fiber Buna-N Beater Saturated (Armstrong CN-705)

Made from cellulose fiber, cork, and Buna-N. It is generally suitable for oil, gasoline, and water services. Combines high compressibility and high crush strength. Tensile strength minimum 1000 PSI. Temperatures to 300°F .

STYLE 0792 Cork and Neoprene Medium Hardness (Armstrong DC-i 00)

A neoprene rubber sheet to which very fine cork particles have been added to create a homogeneous material with great compressibility combined with the resiliency of neoprene. A general purpose gasket and sealing material that has high cork content, minimum side flow. An excellent material for very narrow flange gaskets and for low bolt load applications. For oil, non-aromatic petroleum derivatives, fatty oils, and solvents (except chlorinated, aromatic, or ketone types). Shore A Hardness 55 to 70. Temperatures to 275°F .

STYLE 0792A Cork and Neoprene Soft (Armstrong DC-i 79) Same type material as Style 0792, only slightly softer, giving greater compressibility. Shore A Hardness 50 to 65.

STYLE 0793 Cork and Buna-N Medium Hardness (Armstrong NC-71 0)

Buna-N sheet with fine particles of cork added, providing a homogeneous material with great compressibility combined with maximum resiliency of Buna N. Excellent for narrow flange gaskets and for low bolt load applications. For oil and non-aromatic petroleum derivatives. Shore A Hardness 55 to 70. Temperatures to 275°F .

STYLE 0793A Cork and Buna-N Soft (Armstrong NC-757) Same type material as Style 0793, except slightly softer giving greater compressibility. Shore A Hardness 50 to 65.

STYLE 0793B Cork and Buna-N Firm (Armstrong NC-711) Same type material as Style 0793, except firm. Shore A Hardness 70 to 85.

STYLE 0794 Cork and Synthetic Sponge Rubber Adhesive Backed (Armstrong DK-1 53T)

Cork and sponge rubber composition that combines lasting resilience with high surface friction. It is used to eliminate squeaks, cushion fragile parts, make slippery surfaces non-skid, and to absorb shock or relative motion between adjoining parts of an assembly. It has a strong, pressure-sensitive adhesive, protected with a polyethylene fiber.

STYLE 0794FC Cork and Synthetic Sponge Rubber Tape, Adhesive Backed (Armstrong DK-1 53T)

Same as Style 0794, except in tape form. Material is slit to your required widths.

STYLE 0N8051 Impervapac Nitrile Binder (Armstrong N-8051)

Recommended for low internal pressure and low flange pressure applications (up to 2000 PSI). Moderate oil resistance. Nitrile Butadiene

STYLE 0N8090 Syntheseal Latent Cure Nitrite Binder (Armstrong N-8090)

Armstrong Syntheseal non-asbestos gasket materials are designed to be a direct substitute for asbestos-containing materials.

Style 0N8090 Is a reinforced cellulose fiber and a Latent Cure nitrile butadiene binder. The Armstrong Latent Cure system is formulated for initial conformability which helps seal rough flanges. The presence of heat in the application activates ingredients which vulcanize the material to provide the benefits of Fully Cured products. This provides Style 0N8090 with outstanding sealing characteristics. Excellent oil resistance. Temperatures below 350°F . Minimum tensile strength 2000 PSI.

STYLE 0N8092 Syntheseal Fully Cured Nitrile Binder (Armstrong N-8092)

Armstrong Syntheseal non-asbestos gasket materials are designed to be a direct substitute for asbestos-containing materials.

Style 0N8092 Is a reinforced cellulose fiber and a Fully Cured nitrile butadiene binder. The Armstrong Fully Cured system contains rubber binders which are vulcanized during formulation or in subsequent processes for added initial strength and fluid resistance.

Style 0N8092 excellent crush resistance at high flange pressures. For sealing oil, fuels, and water. Temperatures below 350°F . Minimum tensile strength 1600 PSI.

STYLE 0S8091 Syntheseal Latent Cure Styrene Butadiene Binder (Armstrong S-8091) Armstrong Syntheseal non-asbestos gasket materials are designed to be a direct substitute for asbestos-containing materials.

Style 0S8091 Is a reinforced cellulose fiber with a Controlled Swell Latent Cure Styrene Butadiepe binder. Armstrong Controlled Swell materials are Latent Cure products Which use Styrene Butadiene Rubber (SBR) binders. Significant thickness increase occurs. (Special order.) at the exposed initial edge of the gasket with many fluids, dramatically improving sealability. The heat of application then vulcanizes the material to limit further swelling and provide Fully Cured performance. For oils, fuels, and low-pressure steam. Temperatures below 350°F . Minimum tensile strength 1800 PSI.

STYLE OTN9001 I Thermo-Tork Latent Cure Nitrile Butadiene Binder (Armstrong TN-9001)

Armstrong Thermo-Tork materials are non-asbestos formulated and are designed to outperform many asbestos-containing products in a wide range of heavy-duty applications.

Style OTN9001 Is aramid fiber with a Latent Cure nitrile butadiene binder. The Armstrong Latent Cure system is formulated for initial conformability which helps seal rough flanges. The presence of heat in the application activates ingredients which vulcanize the material to provide the benefits of Fully Cured products.

Style OTN9001 is designed for heavy-duty applications up to 750°F . Excellent oil resistance. Minimum tensile strength 2000 PSI.

STYLE 0TS90131 Thermo-Tork Latent Cure Styrene Binder (Armstrong TS-9013)

Armstrong Thermo-Tork materials are non-asbestos formulated and are designed to outperform many asbestos-containing products in a wide range of heavy-duty applications.

Style OTS9O13 is a blend of cellulose and aramid fibers with a Latent Cure styrene binder.

The Armstrong Latent Cure system is formulated for initial conformability which helps seal rough flanges. The presence of heat in the application activates ingredients which vulcanjze the material to provide the benefits of Fully Cured products.

Style 0TS9013 is designed for heavy-duty applications up to 550°F . Recommended for water and oil applications. Minimum tensile strength 1200 PSI.

Gasket function 

Fills the space between two objects, generally to prevent leakage between the two objects while under compression. Cut Gaskets save money by allowing less precise mating surfaces on machine parts which can use Cut Gaskets to fill irregularities. Gaskets are commonly produced by cutting from sheet gasket material. Gaskets, such as gasket paper (beater addition), Non-asbestos, Rubber, EPDM, Nitrile, Buna, Neoprene, Flexible Graphite, Grafoil®, Aflas, Kalrez®, Viton®, Silicone, Metal, Mica, Felt or a plastic polymer such as (PTFE), Peek, Urethane, or Ethylene Propylene (EP).  In the past, the Cut Gaskets selected for specific applications may contain have contained asbestos.

Today's sealing products manufacturer's in the United States no longer produce or offer any asbestos containing products. Cut Gaskets containing asbestos have been claimed to have caused Asbestosis. Of course it would take the grinding of Cut Gaskets to release the fibers and then the breathing in of those fibers....possible but in the real world this would be rare. Wetting or oiling a gasket before grinding for removal greatly reduces any risk (not grinding is even better).  Asbestos Cut Gaskets is still used in most of the rest of the world and is a very effective low cost material.

It is usually desirable that the gaskets be made from a material that is compressible such that it tightly fills the space it is designed for, including any slight irregularities. The most common misconception when selecting a Cut Gasketss thickness is to choose a Cut Gaskets that is too thick. The thicker the material the more likely the material being contained can weep through the pores of the Cut Gaskets itself.

Over compression of cut Gaskets is a common problem with metal gaskets which have mechanically designed recovery built into the gasket.  Over compression removes the cut gaskets ability to recover. This is also true of expanded PTFE, once over compressed it will have no recovery and therefore will not longer adapt to maintain a seal.  The common strategy of "The more compressive load exerted on the gasket, the longer it will last" is generally true of elastomeric materials since elastomers (rubbers) are not compressible but deflect compression.  Many materials such as non-asbestos compressed cut gaskets and beater addition (ie; Armstrong) materials contain elastomers in the mix of material they are produced from, making them difficult to over compress.

One of the more desirable properties of an effective cut gaskets in industrial applications is the ability to withstand high compressive loads. Most industrial gasket applications involve bolts exerting compression well into the 14 MPa (2000 psi) range or higher. This is why Non-asbestos cut gaskets are so widely used in industrial cut gaskets applications.

American Seal & Packing cuts gaskets of all types, Including: PTFE, compressed non-asbestos, vegetable fiber, beater add, cork, and various rubbers - Nitrile, Buna-N, SBR, EPDM, Viton®, FKM, Hypalon, Aflas®, natural rubber, closed cell, open cell, Neoprene, GRAFOIL® Flexible Graphite and other "soft goods". Gaskets can be cut based on your drawing or sample of the gasket you desire. Basic I.D x O.D shapes can be cut by hand however most gaskets require a die. Gasket materials are available in rolls or on pallets depending on type and quantity. Name brands we can provide include; Brand Garlock®, DX Seal, Klinger, Johns Manville, RM, Detroit, Utex and GRAFOIL® Flexible Graphite among other gasket styles. So, if you want a cut gasket or gasket material so you can cut your own, we can help.

Call us directly or order Armstrong gasket materials online today!
American Seal & Packing (714) 593-9780

 

 

 

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® 2017 American Seal & Packing, Inc.
GRAFOIL® is a registered trademark of GrafTech International Holdings Inc.
Garlock® is a registered trademark of Garlock Sealing Technologies

American Seal & Packing, Inc., Santa Ana, CA 92708   714-593-9780

A California based, U.S. Supplier of Armstrong Gaskets, Ameri-lon Gaskets, Buna Gaskets, EPDM Gaskets, EPTFE Gaskets, Fish Paper Gaskets, Flexible Graphite, Grafoil® Gaskets, Cork Gaskets, Mica Gaskets, Neoprene Gaskets, Nitrile Gaskets, Non-Asbestos Gaskets, PTFE Gaskets, Rubber Gaskets, Silicone Gaskets, Urethane Gaskets, Viton® Gaskets, FKM Gaskets, Armstrong Gaskets.