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So, How many types of cut gaskets are there?
Die cut gaskets - If it’s used in Industry, Aerospace, Automotive or even a cell phone, the most common gasket is die cut. It’s the fastest per piece production method and will help to keep your costs down.
Lathe cut gaskets - This cost efficient production method allow us to convert a tube of rubber or Plastic (PTFE) into a round Inside Dimension x Outside Dimension gasket. This is done manually on a lathe. The advantage of it is that it produces very little waste material. The disadvantage is it can give you a bowed part (on plastics), of course that flattens when installed between flanges.
Waterjet cut gaskets - A very versatile method of cutting that will cut extremely hard materials including metal. Water jet is used to cut metal gaskets, but also Non-asbestos, plastics and rubber. It is known to be a high maintenance piece of equipment. It also has limitations when considering speed. Like a laser cutter it cuts near precision parts using computer software which can be adjusted easily. Unlike a laser it won’t burn rubber and some plastics, and it won’t reflect off of reflective surfaces like flexible graphite.
Laser cut gaskets - Our favorite thing to cut on our laser is PTFE. It cuts like butter. It’s clean, and consistently produces quality parts. Like water-jet it uses a computer to “print” the gasket. Unlike water-jet the parts do not come out wet.
CNC knife edge cut gaskets - In recent years router technology has been adapted with the addition of an oscillating knife. This allows gasket cutters to produce a part without the need for a die. This saves time as die making takes days. Need to produce a prototype part. This is the answer. Still not near as fast as a clicker press but the method of cutting the gasket (the cad file) can be kept on a memory stick and is portable.
What does all this mean?
You will notice 3 of the above 5 methods all use a computer to control the X and Y axis cutting Laser, Waterjet or CNC. Files are saved electronically and can be sent to us to produce the gasket you have drawn. We will accept drawings and do not require they be prepared in house. You now have the capability to essentially own your tooling, rather than the gasket cutter.
Kiss Cut Gaskets - Are cut using the clicker press method, but are cut just short of through so they are easily separted from the rest of the material. . If you’re an OEM assembling at your location, our kiss cutting can provide you with rolls of gaskets you'll peel off the roll and place it on your part. Peel and Stick gaskets are produced using this method too. This helps to make your assembly faster, lowering the final cost of your completed part.
Dove Tailed - When the gasket dimension is larger than the sheets the gasket material is made from there are few options 1) A bonded gasket (2) A dove-tail gasket (also called a “Jig-Saw” gasket).
Other Gasket Cutting Methods Include:
We cut specialized sealing products like Grafoil® Flexible Graphite, Ameri-lon®, Kalrez®, Chemrez®, and more common materials for cut gaskets like: PTFE, filled Expanded PTFE, PTFE, FKM, Viton®, Silicone, rubber, Buna, EPDM, cork, fish paper, vegetable fiber, and Non-Asbestos.
If you have a cut gasket application that requires more than traditional solutions, let our team of cut gasket professionals help.
Gasket Material types
Materials we cut gaskets from come from manufacturers such as:
What does a Gasket do?A gasket 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 die cuttingFrom sheet Cut 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).
It is usually desirable that the gaskets be made from a material that is compressible so that it tightly fills the space it is designed for, including any slight irregularities. The most common misconception when selecting a cut Gaskets 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. This is a greater issue with some materials than others. A rule of thumb is to have the material thick enough to compensate for any surface face irregularities and to permit some compression.
A word of Caution
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 Gasketss 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. Name brands we can provide include; Interface Solutions, Durlon, FMI, Garlock®, Klinger, Thermoseal, Johns Manville, Detroit, Utex, Sepco and GRAFOIL® Flexible Graphite among other gasket styles. So, if you want a cut gasket please give us a call.
2019 American Seal & Packing,
Seal & Packing, Inc., 1537 E. McFadden Ave. Santa Ana, CA. 92705 714-593-9780
A California based, U.S. Supplier of Ameri-lon Gaskets, Armstrong 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, AFLAS Gaskets.