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Gaskets made with GraphiteFlexible Graphite Gaskets are ideal for sealing those difficult high temperature flanges, chemical applications, and low bolt load applications. Nothing seals as well as flexible graphite.
Cut FULL FACE Flexible graphite gaskets 1/8" Thick for use between 125/150# piping flanges. Flexible Graphite or Grafoil® products are ideal for sealing those difficult high temperature applications, chemical applications, and low bolt load applications. Nothing seals as well as flexible graphite or Grafoil®.
*Ring Gaskets are I.D. x O.D. Gaskets x Thickness gaskets. There are no bolt holes in this style gasket.
**FULL FACE Gaskets are I.D. x O.D. x thickness gakets with bolt holes. The O.D. on a FULL FACE gasket is larger than the O.D. on a Ring gasket.
Flexible Graphite Sheet
Flexible graphite gaskets made from sheet gasket material typically 98% graphite. Leachable chloride typically less than 50 ppm. Sulfur content: 1200 ppm. Compressibility: 45% Recovery: 20%. Creep relaxation: 5%. Density: 62.4 lbs/ft. Tensile strength: 700 PSI. Temperature range (oxidizing atmosphere): -400” F to 750” F.
316 S.S. Foil Inserted Flexible Graphite
Flexible graphite gaskets reinforced with a 316 stainless steel foil (0.002” thick) made from material typically 98% graphite. Leachable chloride typically less than 50 ppm. Sulfur content: 1200 ppm. Compressibility: 35%. Recovery: 18%. Creep relaxation: 12%. Density: 62.4 lbs/ft. Tensile strength: 5000 PSI. Temperature range (oxidizing atmosphere): -400” F to 750° F.
316 S.S. Tang Inserted Flexible Graphite
Flexible graphite gaskets with tang 316 stainless steel insert (0.005” thick) made from material typically 98% graphite. Leachable chloride typically less than 50 ppm. Sulfur content: 1200 ppm. Compressibility: 35%. Recovery: 18%. Creep relaxation: 10%. Density: 62.4 lbs/ft. Tensile strength: 5000 PSI. Temperature range (oxidizing atmosphere): -400” F to 750” F
Flexible Graphite Cut GasketsSeal like no other sealing material . Flexible graphite gaskets will handle higher temperatures than any elastomeric of non-asbestos gasketing and handle a ph range from 0-14.
Developed originally by Union Carbide under the brand name "Grafoil". Common grades include GHL, GHE, GHR, GTB, GTA, GHP Flexible graphite solves industries difficult sealing applications. For help view the Grafoil Engineering Design Manual.
Call us directly or order Flexible Graphite gasket material online today!
How do you cut graphite gaskets ?
When it comes to cutting gaskets 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 controlled ways of cutting a gasket with out the need for tooling or dies.
Flexible graphite is the raw material which Graphite seal rings and gaskets are made from.It is important to know the nature of flexible graphite material to thoroughly understand the inherent nature of seals made with it.
Flexible graphite is basically a carbon-based sheet material made from graphite “flakes” mined from the ground and processed to prepare the billions of tiny flakes for mechanically bonding them into a homogeneous, monolithic roll of various thickness and lengths.
These rolls are used by fabricators, such as AS&P, to manufacture seal rings using four basic construction techniques, waterjet cutting, CNC oscillating knife cutting (flash cutting) or die cutting, to cut gaskets and die molding (or molding) to form flexible graphite "die formed rings".
It is important to add that at this point that because of the very nature of the raw material, regardless of which constructions is used, graphite flaking is always a possibility in an Unconstrained graphite seals.
CNC Oscillating knife:
Waterjet gasket cutting:
Who are the primary Graphite manufactures?
The graphite sheets you see from Garlock, Thermoseal, Utex, Durlon, Chesterton, Flexitallic, JM Clipper etc, are not actually made by those companies. The primary manufactures of quality flexible graphite include SGL (formerly Polycarbon), Graftech, FMI-SPA and in Europe Mercen. Private branding allows these exceptional graphite manufactures to focus on manufacturing while the names your familiar with handle the sales and distribution.
Whats the most important thing to look for?Flexible Graphite Branding! Each of the distributors mentioned above sell only branded product. Why? Because reputation is everything, and there is a lot of poor quality flexible graphite out there. So how do you protect yourself? Buy only branded product!
In general, unbranded flexible graphite will be high in sulfur. Sulfur will cause pitting on your flanges, allowing leakage to develop. It's the old pay me now or pay me later, and later will cost more. Use quality graphite initial, and protect your equipment.
Die Molding or Forming:
Die Formed rings are made up of crushed graphite ribbon and the fissures or “cracks” on the OD are inherent in their construction. They cannot be removed. We can minimize their appearance by compressing the ring more. However, increased compression increases the ring’s density and can cause performance issues by limiting radial expansion. Our history with flexible graphite has proven the “crack” on the OD of the die molded ring will NOT cause a detrimental condition any more than the presence of the seal itself
We have proven time and time again that the “crack” on the OD of the flexible graphite die molded rings cause a detrimental condition. If extrusion is the concern we can provide designs to minimize or control it with our metal clad seals.
When there is a concern of pressure causing extrusion resulting in a detrimental condition in the seal. AS&P has solutions such as a metal Clad system that encapsulates the graphite material in a thin metal casing. Allowing the compressive advantages of the graphite, but “hiding” it from the rigors of the application forces that cause extrusion.
AS&P has been distributing high temperature seals for applications for more than 30 years. Graphite Gaskets, Flange Gaskets, Valve Seals, Pump Seals, Compressor Seals, Exhaust Seals are just a few of the applications where this material is used today.
Call us directly or order Flexible Graphite Gasket Materials online today!
2018 American Seal & Packing,
Seal & Packing, Inc., Santa Ana, Ca. 92705 714-593-9780
A California based, U.S. Supplier of Flexible Graphite Sheet & Flexible Graphite Gaskets.