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Ultem® 1000 and 2300 Sheets and Rods – Polyetherimide or PEI

Ultem® 1000 and 2300 Sheets and Rods – Polyetherimide or PEI

Ultem® Sheets Rods – Polyetherimide, PEI

Polyetherimide or PEI is the generic name for one of the popular engineering resins. The most common resin supplier for this material is Sabic Plastics (formerly known at G.E. Plastics). This High quality, high temp Ultem 1000 amorphous thermoplasticamorphous thermoplastic material comes in two common resin varieties used in the production of plastic shapes, the first is Ultem® 1000 which is an unfilled – natural material, the standard color for unfilled PEI (Ultem Sheet) is a transparent amber. The second is Ultem® 2300, which is a 30% glass filled PEI resin, this resin is a creamy tan color. Several other resins are available, including different percentages of glass fill, black pigment or color, and a few high end specialty grades. Some members our our industry refer to Ultem® as the ‘ultimate’ in plastic materials. With some of the best available properties, this material out performs most plastics in critical applications. This material is certified to: FDA compliance, USDA, 3A and also USP Class VI for medical use. Polyetherimides have exceptional tensile and flexural strengths and excellent electrical properties. Ultem® resins have inherent flame resistance and are UL 94 5VA at .075″. Ultem Sheet and rod machines very well, and can be used at temperatures of 340 degrees continuous.

Polyetherimide – PEI is the Ultimate Resin

The Polyetherimide family of plastic resins really excel in the medical and pharmaceutical industries. These industries have incredible demands on plastic materials, and most plastics fail quickly. Ultem resins handle the heat, chemical, stress better than almost any other material. For complete Sabic Ultem 1000 sheet and slabtechnical data sheets and more information chick for data sheet page. Several of our major manufacturers produce Ultem® PEI resins into stock sheets and rods. Some trade names from these suppliers are: Tempalux®, Sustatec®, Unitem®and many more. Ultem sheet and rod has some of the best properties of all the available plastic materials. Some materials that have some similar properties: Acetal, Radel, PEEK, PTFE. Check the data sheets on each of these materials to help in deciding which material is appropriate for your application.

Rod is normally available in rod from .375″ – 4.0″ diameters, and sheets from .125″ – over 2.0″ thickness, and we stock many items for immediate shipment. Additional sizes are available on request, including larger diameters, thicknesses, molded tube, extruded shapes, strips and bars.
Contact us for more details on this exceptional material. Email us or call us at 866-832-9315

Why You Should Use Homopolymer Acetal or Acetal Copolymer Rod

Why You Should Use Homopolymer Acetal or Acetal Copolymer Rod

Delrin® Homopolymer Acetal compared with Acetal Copolymer

Many of our clients assume that Delrin® rod and Acetal rod are the same thing. This is not true.

Yes, all Dupont Delrin® rod is Homopolymer Acetal rod, but not all Acetal rod is Delrin® rod. Dupont is the maker of Dupont Delrin® resins

Delrin® is the trade name for Homopolymer Acetal made by Dupont. Dupont™ Delrin ® is a popular acetal homopolymer brand name and the most commonly used acetal homopolymer.

This is the most recognized of all trade names for Acetal materials, but not the only available Acetal material.
The Copolymer Acetal resin is produced by a wide variety of large plastic manufacturers, BASF is probably one of the largest and most well known. Some main resin names are: BASF Ultraform® H4320, Kepital® F10-02, Hostaform® M25 and many others.

While Delrin® Homopolymer Acetal is a wonderful material, in a larger cross sections Homopolymer can exhibit center line porosity, or ‘soft centers’. This can sometimes be seen with the naked eye, and is a darker white in a normally milky white natural colored material. This center line porosity can cause problems in some applications. This porosity can cause leakage of fluid if under pressure, or soft center’s of homopolymer rod and sheet.

This should not stop you from considering Delrin® Homopolymer Acetal though. Many other properties of the homopolymer resins are superior to the copolymer resins. These properties are:

General PropertyASTM
Typical Value

Typical Value
Unfilled Co-Polymer
Specific Gravity D7921.421.40
Tensile Strength YieldD6389,600 – 11,0009,000 – 10,200
Tensile ModulusD638450,000400,000
Izod Impact – NotchedD2561.21.0
Hardness – RockwellD785M94M90
Deflection Temp @ 264psiD648257220
Deflection Temp @ 66 psiD648347335
Water Absorption @ 24 hrs
Co. Thermal ExpansionD6966.83X10-55.4X10-5

Some key properties for homopolymer acetal are: higher tensile strength, increased Izod impact, higher deflection temperatures and it is slightly harder. The co-efficient of thermal expansion is a bit higher, and needs to be considered when designing a new part. Extruded Delrin® brand homopolymer resin material also comes in several resin variations, including: Delrin® 150 and Delrin® 507, contact us for details. Dupont™ Delrin® is a popular acetal homopolymer brand name and the most commonly used acetal homopolymer.

Many of our clients prefer the homopolymer rod and sheet for small machined parts. This is due to the increase in a few key properties, and of course brand recognition. Some of our major brand names for quality Copolymer Acetal (POM-C) sheet and Rod include: Tecaform AH®, Sustarin C®, ZL 900® and Pomalux®.

Both resins meet the standard ASTM-D-6778, and the cancelled specs, L-P-395 and ASTM-D-4181. Contact us for certification and specifications you may require.Comparing Dupont Delrin to Acetal Copolymer

The Acetal family of plastic resins are excellent for wear resistance, great mechanical strength, and superior machining properties. It is available in a huge range of sizes and shapes. Click here for more details on Acetal – Homopolymer Acetal Rod, and sometimes referred to as plastic dowel. We also have the capacity to supply colored Acetal Copolymer or Delrin® Homopolymer Acetal rod; click here from more details on the colored Acetal material.

Similar materials to Acetal Copolymer – Homopolymer Acetal are Nylon Rod, PET Rod and Noryl® Rod. Most materials are available as round rod, square rod, bar, strip, sheet and plate.

Please contact us for more details on these and other plastic materials. For a comparison chart of plastic materials click here: Plastic Materials Selection Guide 

**Note:  Delrin® is a registered Trademark of Dupont

PPO – Noryl Sheet and Rod EN265 and EN185

PPO – Noryl Sheet and Rod EN265 and EN185

Noryl versus PPO

What is the difference between Noryl and PPO (or Modified PPO)?

Noryl® is a trade name for Sabic Plastics (formerly GE Plastics) for their Modified PPO (Modified PolyPhenyleneOxide). Sabic is the world leader in engineering and mechanical plastic resins.

This resin is a remarkably versatile material. PPO exhibits unusually low moisture absorption and great machinability. Noryl® is an excellent choice for water filtration and fluid handling parts. Noryl has excellent impact resistance, long term dimensional stability and is light weight. Noryl® has exceptional electrical properties (properties boosted by lack of water absorption). It can be thermoformed and machined to tight tolerances. It carries a UL flammability rating between UL 94-HB to UL 94 V-1. The primary specification covering PPO (Noryl®) is ASTM-D-4349.

Sabic Noryl is available in two standard unfilled varieties, EN-185 and EN-265. The number indicates the heat deflection temperature of the material. This material is easy to machine, holds tolerances well, and is great for water immersion applications. A complete data sheet is found hereNoryl EN-265 machined nozzle.

We stock this material in both sheet and rod. The standard natural color for Noryl is opaque Black and is stocked as the EN-265 grade of resin. Noryl® is also available as a glass filled material which enhances both the mechanical and thermal properties of the resin. Chemical attack from water, most salt solutions, acids and bases is also minimal with Noryl®.

Materials with similar physical properties are ABS, Acetal Copolymer, PET and PBT (Polyester) and Nylon.

Contact us for more details on the range of PPO – Noryl materials. Call us at 866-832-9315 or email us.

HDPE and UHMW Polyethylene Sheet – Cutting Boards

HDPE and UHMW Polyethylene Sheet – Cutting Boards

FDA – NSF Approved Cutting Boards

HDPE and UHMW Polyethylene Sheets

Next time you are cutting vegetables on your cutting board, the material most likely to be used is Polyethylene. Because it is stain, moisture and odor resistant, Polyethylene is a perfect choice. Other cutting boards made out of wood are more susceptible to bacteria and odors because they lack the properties that Polyethylene sheets offer, such as its chemical resistance and FDA approval for food Colored HDPE Cutting Boards NSF approvedcontact. Polyethylene is a very durable and lightweight material that comes in many forms and is a great for a wide variety of applications.

NSF Approved Cutting Boards

The HDPE is available in .500″ thick in several FDA / NSF approved colors, and is great for use in kitchens where cross contamination is a problem. 

The Ultimate Cutting Board

Polyethylene has many names. The most common are HDPE, LDPE, and UHMW. The difference has to with the molecular weight and branching which is when a monomer or atom is replaced by a longer chain of polymers (a long repeating chain of atoms). High Density is commonly used for milk jugs and food containers. Low Density is commonly used for bottles and plastic bags. UHMW, which has higher molecular weight (2-6 million) allows for an even transfer over the length of material which makes it stronger and able to be used for bearing applications due to its great wear resistance. Commonly used in the food and dairy industry, UHMW is a great replacement for other materials and solution to many problems. All of these polymers are derived from the same family but all have certain properties that make them a little different. HDPE provides great chemical resistance, with high impact strength and great energy absorption. LDPE has most of the same properties as High Density but is not as dense at 9.15, opposed to HDPE which is 9.34. It also has a lower tensile strength and easier formability.

UHMW is a strong material that has great durability and low co-efficient making it an ideal for sliding applications. Polyethylene offers a wide range of material choices and properties HDPE can be recycled and made into usable plastic lumberand has great durability that can be suitable for a number of applications. From the food industry to automotive, the kitchen or the warehouse, whatever your Polyethylene needs are; High Density, Low Density or UHMW, Polyethylene is a great choice.

Typical Resin Properties:

General PropertyASTM TestTypical Value HDPETypical Value LDPETypical Value UHMW
Specific Gravity D792.941 – .965.91 – .925.93 – .94
Tensile Strength YieldD6383,800 – 5,5001,400 – 2,0006,800
Izod Impact – NotchedD2562.0 – 3.5>16No Break
Vicat Softening TempD1525257ºF219ºF260
Hardness – RockwellD785D60 -70D42 – 50R64
Continuous Use Temp-100 – 180ºF174ºF180ºF
Deflection Temp @ 66 psiD648171  124174
Co. Thermal ExpansionD6967X10-54.6 -5.5X10-511.0X10-5

Please contact us for more information on FDA and NSF approved plastic materials. Email us here, or call us at: 866-832-9315

Topic: HDPE Cutting Boards – NSF Approved

Nylon Tube and Nylon Tubing made from Nylon 6 or Nylon 6/6

Nylon Tube and Nylon Tubing made from Nylon 6 or Nylon 6/6

Nylon Tube and Tubing can be made from Nylon 6 or 6/6

Nylon is one of the most popular and widely used plastic materials. From the carpet in your home to the yellow Nylon rope you have in your garage, Nylon is a tough and very wear resistant material. This self lubricating mechanical plastic material is very stiff and extremely durable. This material can be machined easily, and is a key industrial plastic resin.

Nylon 6 and Nylon 6/6 Tubing

While Nylon is a common plastic material, in the extrusion and cast grades, it is not a normal stock item for many factories. Nylon can be produced in a huge range of sizes. The cast process enables the range of sizes of a Cast Nylon Tube (Type 6) to be almost unlimited. The extrusion process is a bit more restrictive, which can produce very small sizes to larger sizes of Extruded Nylon Type 6/6 Tubing up to about 2.0″ OD. The properties of these materials are similar, and are listed here. Also, in the case of the Cast Type 6 Nylon Tube, many additives can be mixed into the casting Red Cast Nylon Type 6 Sheet and Platemixture to increase many critical properties. Examples of these additives can yield: Glass Filled Nylon Tube, FDA Approved Oil Filled Cast Nylon Tubing, Cast Nylon MD Tube (molybdenum disulfide), Solid Lubricant Filled Cast Nylon Tube, and a few additional variations. These same filled items are also available in Cast Nylon Rod, Cast Nylon Sheets and Cast Nylon Plates (all made from the same Cast Nylon Type 6 resin). This casting process allows for a wide range of sizes and configurations, from round rod, cast sheet, tubular bar to near net shapes and covers on metal rollers and gears.

Why use Tubular Nylon (Nylon Tubular Bar)

There are numerous reasons to use a Nylon Tubular shaped material. 1. Vast range of sizes to fit most requirements 2. Large reduction of waste due to near net shape 3. Great reduction of machining time due to matching size to finished needs 4. Lower cost due to reduced material and reduced machining time

The difference between Nylon 6 Tubing and Nylon 6/6 Tube

The main differences are the base resin. The Nylon 6 tubing is a cast resin, and the Nylon 6/6 tube is an extrusion grade resin. Both materials are still Nylon, just a different grade of resin. The properties are also very similar, look here for specific Nylon resin properties. The other difference is that the Cast Type 6 Nylon is normally in larger sizes. This is because the cast version is poured as a liquid into molds or rigid tooling, and is done one at a time. This process, while it makes a very high quality part, is a more expensive manufacturing method, and is not cost effective in small or thin cross sections. The extrusion grade of Nylon, the Type 6/6 Nylon is heat processed in large batches. This process requires set up and large runs, and is very cost effective in these large production runs. In addition, the cross sections for the heat processed Nylon 6/6 can not be excessively large. The extruded Nylon 6/6 is therefor done sizes up to about 3″, as larger pieces are more expensive and require extra stress relieving to prevent warping.

Cast Nylon VersatilityLarge Cast Nylon Sheave

The Cast Nylon manufacturing in the USA is very advanced. The production facilities can produce amazing and diverse sizes and shapes in the grades listed above. One of the unique versions of Cast Nylon is in the Glass Filled Nylon Tube, Glass Filled Nylon Rod and Glass Filled Nylon Sheet range. The percentage of glass fill can be custom blended to meet your specific needs, and can also contain additional fillers like MD, Oil or pigments. Many grades of Nylon are also available for very specific applications, like: bearings, sheaves, pulleys, wear plates, food processing applications, FDA approved grades, color matched for identification and many more. Other plastic materials used in these same applications include: Acetal Copolymer, PET (Polyester), PTFE and more. Contact us today for additional information on this or any other plastic sheet, rod or tube material. E-mail us here, or call us toll free at 866-832-9315, or visit our main web page at:

Unitrex Lf20 – Replacement for PCTFE and Vespel SP-1 for many demanding applications?

Unitrex Lf20 – Replacement for PCTFE and Vespel SP-1 for many demanding applications?

Unitrex Lf20 – PTFE Filled PEEK

A newly released form of Filled PEEK is now available. This PEEK is filled with PTFE and is called Unitrex Lf20, and it is filled with 20% PTFE. This new grade of PTFE Filled PEEK plastic was originally produced by Nytef Plastics. It is an extruded thermoplastic that comes in both rod and sheet form. This grade has significantly improved properties over the standard unfilled grades of PEEK. The PTFE filler provides excellent wear properties and has a very low co-efficient of friction, which makes this a great material for sliding and wear applications, and is made to last for long periods of abuse. Unitrex Lf20 has great machinability and dimensionally stability. It has a wide range of uses in such fields as medical, semi-conductor, and aerospace seals, where standard PEEK is too rigid. These properties enable this material to replace Polyimide (Vespel®) and PCTFE (formerly Kel-F) in many applications of high chemical resistance and the ductility for use in seals. This Filled PEEK works extremely well in Medical, Semi-Conductor and Aerospace Seal applications.

PTFE Filled PEEK vs. PTFE Filled AcetalUnitrex LF20 - Mechetec PEEK

Comparable to Lf13 which is 13% PTFE filled Delrin® (Delrin® AF), which is also good for most of the same types of applications but cannot withstand the high temperatures than that of Unitrex Lf20. The PTFE Filled PEEK has a melting point of 650 degrees F while the PTFE Filled Delrin® – Unital® Lf13 has a melt point of 347 degrees F, making both materials high temperature plastics.

Because the Nytef Unitrex Lf20 is filled with PTFE (which has the lowest co-efficient of friction of any plastic), it is ideal for sliding and wear applications. It also has a kinetic and static friction resistance of 0.1 which makes it the perfect choice for jobs were heat from friction should not be generated and part longevity is critical. Unitrex Lf20 offers superior properties to many other plastics, such as high heat and chemical resistance but also great friction resistance along with improved properties to make it a great plastic for a wide spectrum of uses.

Why Change from Vespel SP-1 or PCTFE to Unitrex Lf20?

While this new PTFE Filled PEEK will not replace the Vespel SP-1 and PCTFE in all applications, it certainly will in many applications (see table for comparison). The main reason to make a change is, drum roll please, COST. The Unitrex Lf20 is up to 30% less expensive that the other materials. With similar and comparable properties, consider making the change.

Unitrex® Lf20 also exhibits a far superior chemical resistance to that of its Acetal counterpart due to PEEK having a far better range of chemical resistance to aqueous and organic environments as well as acids and alkalines. Acetal Copolymer tends to degrade when exposed to such chemicals like sulfuric acid and chlorine while PEEK only tends to be attacked by halogens and hydrocarbons such as in crude oils. For additional properties and to compare the Unitrex LF-20 to Dupont Vespel SP-1 and PCTFE see the table below. Here is a copy of the full data sheet on Nytef Unitrex Lf20.

Standard Properties Table

PropertiesTestMethodUnitUnitrexLF20 Nominal ValuePCTFE(Kel-f) Nominal ValueVespelSP-1 Nominal Value
Specific GravityASTM-D-7921.422.1 – 2.141.43
Tensile StrengthASTM-D-638psi11,5004,800 – 5,30012,500
Tensile ModulusASTM-D-638psi460,000207,000
Flexural ModulusASTM-D-790psi500,000180,000450,000
Rockwell HardnessASTM-D-78584-D90-D45 – 60 E
Melting PointDSCdegress F650410 – 415680+
FlammabilityUL 94@ 3.0mmV-0V-0V-0
Kinetic Coef. of FrictionASTM-D-18940.1
Static Coef. of FrictionASTM-D-18940.1

For additional details on these and other materials, please contact us here or call us at 866-832-9315

Unitrex and Unital are registered trademarks of Polymer Industries
Delrin and Vespel are registered trademarks of E.I. Dupont