PLASTICS21XX

PTFE Rotary Shaft Seals - PTFE Lip Seals - Best Choice

PTFE Rotary Shaft Seals (PTFE lip seals) are often used in applications where traditional elastomer solutions would be unable to deliver the required level of performance.

Equipment which is required to operate with high pressures, high speeds or that requires a dry running rotary seal, can often only be accommodated by using products where the seal lips are manufactured from the latest filled PTFE polymer technology.

Several standard ranges of PTFE lip seals are available to cover a broad range of applications. In the case of very demanding or extreme applications, a custom designed solution may present the best opportunity to deliver the required level of performance.

Properties PTFE Rotary Shaft Seals - PTFE Lip Seals

• Excellent chemical resistance
• Suitable for applications with high thermal loads
  from –60°C to +200°C
• Suitable in case of insufficient lubrication and dry runs
• Also suitable for unhardened shafts
• Highly wear-resistant sealing lip compound
• Friction-optimized designs for minimum power loss
• Suitable for high circumferential speeds
• Low breakaway forces after prolonged downtimes (no stick-slip)
• Antiadhesive behavior of the sealing lip
• Special types available for the food processing and pharmaceutical industries
  
  

PTFE Rotary Shaft Seals (PTFE Lip Seals) - Application Examples:

• Mineral and synthetic lubricants
• Pharmaceutical products and foodstuffs (FDA recommendations for certain PTFE compounds)
• Chemical waste water and wash water
• Corrosive, fluid, and gaseous media
• Powders and granulates
• Coolant and lubricant fluids
• Water and steam
• Resins, glues, and pastes
• Air/oxygen (BAM tests for certain PTFE compounds)
• Heat transfer oils

PTFE Piston Seals and Rod Seals - Long lasting, Low friction

PTFE piston seals (PTFE rod seals) as Spring-energized seals and memory packings are always the ideal choice for sealing static or dynamic pistons and rods.

ElringKlinger Engineered Plastics is manufacturer of PTFE seals and offers a broad range of standard PTFE piston seals and PTFE rod seals, supplemented by customer-specific special solutions.

In this area, the focus is on modified PTFE materials and compounds with specifically adapted properties.

Properties

• Outstanding dry-running characteristics
• Low wear
• Low friction
• Variable friction conditions through choice of spring characteristics
• Extremely low breakaway forces even after prolonged downtimes
• No stick-slip effect even at low sliding speeds
• High dimensional stability
• High chemical and thermal stability
• No volumetric change by swelling or shrinkage
• Compact seal, suitable for O-ring assembly spaces in acc. with ARP 568 A, DIN 3771, and ISO 3601/1
• Good cost-benefit ratio
• Dimensions from Ø 2 to 3,000 mm available
• Very good wiping effect with abrasive media, such as paints and lacquers
• Sterilizable
• Easy to rinse
  
  

Suitable for the Following Application Areas

• Automotive industry, e.g., in gasoline direct injection and in headlight cleaning devices
• General mechanical engineering, e.g., in valves, solenoid valves, CNC machines, compressors, and vacuum pumps as well as tank systems
• Aerospace industry, e.g., in landing gear systems
• Food processing industry, e.g., in filling machines and metering systems
• Pneumatics, e.g., in cylinders and other pneumatic components
• Medical engineering and analytics, e.g., in chromatography and endoscopy
• Offshore technology, e.g., as petroleum and natural gas seals
• Chemical plant and equipment technology, e.g., in apparatus and container engineering

PTFE Piston Rings - Environmentally Compatible Sealing even without Lubricant

PTFE Piston Rings and Guide Rings (Rider rings) for dry-running applications are currently a focal point of technical development.

They significantly reduce a machine’s operating costs and, in today’s increasingly environmentally aware society, make it easier for operators to fulfill stricter environmental legislation.

ElringKlinger Engineered Plastics offers a whole range of PTFE piston sealing rings (Guide rings or rider rings for reciprocating compressors).

These products are made possible thanks to our comprehensive technological know-how and our many years of experience with countless customer projects.

We are able to create specially developed PTFE compounds, e.g., for dry-running seals and guides, such as those used in reciprocating compressors—with the help of innovative production processes. Thanks to their specifically adapted filler proportions, these compounds offer decisive advantages:

Properties

• Exceptionally low friction coefficient in combination with metals and plastics
• Antiadhesive behavior without any stick-slip effect
• High elongation properties enabling easy fitting
  of sealing and guide rings to one-piece pistons
• Exceptionally large temperature range from –200°C to +260°C
• Chemically resistant to almost all solid, liquid, and gaseous media
• Ageing-resistant
• 不燃烧的
• Physiologically neutral in the stated temperature range
  
  

Suitable for the Following Application Areas

• Compressors operating under full- and low-lube conditions
• Gas rotary pumps
• Expansion machinery
• Liquid gas and vacuum pumps
• Rocking piston pumps
• Rotary compressors for loading/unloading of silos
• Generation of oil-free compressed air for the
  food processing industry, pharmaceutical industry, and dentistry
• Compressed air for the craft and do-it-yourself market
• Pneumatic hammer drills
• Automotive technology, including ride leveling
  and air-conditioning systems

PTFE Plain Bearings - Friction Bearings

For plain or friction bearings an important prerequisite is that they work reliably over a long period of time and do not fail even under low-lube or dry running conditions.

Plain Bearings made of MoldflonTM or highly wear-resistant PTFE compounds are the solution from ElringKlinger Engineered Plastics.

They are particularly suitable for applications involving high p•v values and high thermal loads. This makes plain bearings (friction bearings) of ElringKlinger Engineered Plastics the ideal choice for use with aggressive media.

What’s more, our plain or friction bearings can be used with confidence in applications involving contact with food or pharmaceutical products.

Properties:

• Excellent chemical resistance
• Large temperature range of –100°C to +250°C
• Suitable for high circumferential speeds under dry running conditions
• Suitable for high p•v values under dry running conditions
• FDA-compliant materials for life science applications
  
  

Application Examples:

• Elringplast plain bearings: very good chemical resistance and wear characteristics in industrial washing machines
• MoldflonTM plain bearings: very high loads with damping properties for use in clutches
• MoldflonTM plain bearings: approvals for use with food and temperature resistance for use in conveyor systems in the food industry
• M-Liner dry plain bearings (wrapped bushes) : low friction and thin layers for use in actuator pins in electromagnets

聚四氟乙烯波纹管-定制的Design and Performance

PTFE bellows are used, for example, as compensating elements between engineered parts. By specifically using different fold geometries, any combination of properties can be achieved as required—for example, high flexibility or compressive strength.

The outstanding material properties of PTFE allow bellows to be used increasingly in the medical and food sectors, as well as in general industry.

聚四氟乙烯波纹管性能

• Almost universal chemical resistance
• FDA conformity for food and pharmaceutical products
• Highly suitable for sterilization
• Antiadhesive behavior
• Large temperature range of –60°C to +200°C
• Cost-effective series production from semifinished product to final product
• High reverse bending strength
• Good dimensional stability
• Low tooling costs
• Freedom of design
  
  

PTFE Bellows Application Areas

• As compensation for expansion in pipe systems
• For shielding sterile areas
• Filling lines
• 无菌阀门
• Solenoid valves
• Metering devices
• Pumps and valves, coating technology, steel mills, fitting industry

PTFE Diaphragms - Reliable Media Separation

A diaphragm is normally used to reliably separate different media or spaces with different pressures. One of the main requirements is chemical resistance to aggressive media. Precisely defined flexibility and a long service life are also important criteria.

ElringKlinger工程塑料的财富experience in this field. We are able to fulfill precisely defined sets of requirements by tailoring the material and design of the diaphragms exactly to the relevant application. PTFE or filled PTFE offer just the right combination of mechanical, thermal, and physiological properties for this range of applications.

PTFE Diaphragms Properties

• Good reverse bending strength
• Almost universal chemical resistance
• Highly suitable for sterilization
• Temperature resistance –60°C to +200°C
• FDA-approved and therefore suitable for contact with
  food and pharmaceutical products
• Freedom of design
• Homogeneous material structure

PTFE Tubes - Optimal Properties for Critical Media

PTFE tubes offer the ideal properties for transporting liquid foodstuffs as well as pharmaceutical products and aggressive chemical liquids. ElringKlinger Engineered Plastics has established itself as a specialist for tubes based on PTFE, a product increasingly used in medical engineering, the chemical industry, and mechanical and electrical engineering.

Besides solutions using pure PTFE, compounds featuring carbon, glass, bronze, or graphite are also used in order to achieve exactly the right material properties required for a particular application.

Properties

• Exceptional thermal loadability from –260°C to +300°C (no embrittlement in boiling helium at –269°C)
• Functional temperature range in case of moderate mechanical stress of –200°C to +260°C
• Physiologically neutral
• Approved for food use in accordance with FDA requirements
• Highly resistant to hot vapor
• Suitable for repeated sterilization
• Certificates of conformity available for various pigmented tubes

Plastic Heat Exchangers from Moldflon™

Heat Exchangers made from Moldflon™ PFA - ECTFE - PVDF - PP or PE have been manufactured by ElringKlinger Engineered Plastics for many decades. Standard solutions as well as custom designs are available and supplied across a wide spectrum of global industries.

The Heat Exchangers are designed using computer models based on customer-specific process data. Apart from the process-related design, the Heat Exchanger is also classified according to the categories and modules of the Pressure Equipment Directive 2014/68/EU.
This includes the strength analysis, design and manufacturing documentation as well as the final pressure test.
Each Heat Exchanger comes with an inspection certificate and a declaration of conformity.

Individual Components with Specific Properties

High-performance plastics based on PTFE are an extremely versatile material that can be given precisely defined properties and allows engineered parts with complex shapes to be produced. ElringKlinger Engineered Plastics has the necessary expertise to offer a comprehensive range of services in this area and can create the optimal solution for every requirement.

These include, for example, combinations of PTFE and metals, elastomers, and other plastics. Various additives can also be used with PTFE in order to achieve precisely tailored material properties.

Materials

• PTFE (polytetrafluoroethylene)
• PTFE compounds
• PE-UHMW (ultrahigh-molecular-weight polyethylene)
• POM (polyoxymethylene)
• PA (polyamide)
• PEEK (polyetheretherketone)
  

基于PTFE层压制品和修改PTFE

Laminates are reinforced PTFE, consisting of a PTFE film or plate on the one hand and a substrate on the other. The layers of material are firmly bonded to each other.

Possible substrates include fabrics, fibers, or knitted fabrics as well as films. They consist, for example, of glass, metal, ceramics, elastomers, or high-performance polymers.
The structure may comprise two or more layers, and constructions with up to 7 layers are not uncommon.

Furthermore we assemle PTFE coated glass cloth to cut length or stamped parts, specially to PTFE coated glass cloth conveoyer belts.

Properties

• Outstanding resistance to a wide range of chemicals
• Very broad functional temperature range, only limited at the upper end by resistance of the adhesive used
• Very good antiadhesive properties
• Dimensional stability and resistance to stress cracking
• No embrittlement, no ageing

When modified PTFE is used as a film material, these properties are enhanced further by:

• Polymer structure with higher density and fewer pores
• Lower permeability
• Better weldability

Application Areas

• Linings in plant engineering
• Components for electrical and electronic applications
• Diaphragms in pump or sensor construction
• Optically transparent compounds for textile construction

PTFE Foil, PTFE Sheets, PTFE Rods, PTFE Pipes

A complex solution or a component with specific geometries is not always required. Sometimes all that is needed is a material with very specific properties to fulfill a certain task.

Besides individual solutions and a broad range of standard products, ElringKlinger Engineered Plastics also offers semifinished products in the form of foils, films, plates, rings, rods, and hoses. The available material versions are virgin PTFE, modified PTFE, porous PTFE, or a PTFE compound with specific fillers. These can be tailored to your requirements in order to precisely fit your application.

Shapes and Dimensions On Demand

All semifinished products made by ElringKlinger Kunststofftechnik are available in the typical standard sizes:

• PTFE Foil and Films with thicknesses of 0.03 to 5.0 mm
• PTFE rods or cylindrical hoses with a diameter of up to 500 mm and a length of up to 300 mm
• PTFE Sheets or PTFE Plates in standard sizes up to 3,000 x 1,000 mm and thicknesses of 6 to 150 mm
• PTFE Rings with a diameter of up to 3,000 mm

Alternatively, customer-specific sizes and geometries within the given maximum dimensions can be produced. This is done using a machining process, for example.

PTFE, FEP, PFA and PVDF High temperature heat shrink tubings

ElringKlinger Engineered Plastics is manufacturer of Heat shrink tubing made from Polytetraflon™-PTFE or Moldflon™-FEP, -PFA and -PVDF.

Our heat shrink tubing from PTFE, FEP, PFA and PVDF is manufactured from selected raw materials. The tubing, which is expanded by a special heat treatment, shrinks back almost to the original diameter when subjected to heat treatment once again.