Materials for Compressor Parts

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Capabilities

Our CNC turning and milling facility means we can offer the full engineering service to our customers.

Our inspection and measuring equipment includes a state-of-the-art CNC Coordinate measuring machine, and optical measuring machines.
- Milling
  
  Learn more about our CNC milling capabilities and how we can help bring your ideas to life. Our expert team is ready to take on your next project. We offer comprehensive plastic CNC milling services from the micro in size to much larger 1 meter long components.
- Turning
  
  CNC turning of PTFE and engineering plastics. Live tooling on our lathes mean competitive pricing and shorter lead times.
- Micro Parts
  
  We are proud to have assisted with development of many insulating components with a diameter of 1mm or less.
Engineering & Design

We provide a bespoke fluoropolymer component design & manufacture service and can deliver the right solution to your problem.
Manufactured Plastic Parts

For over 25 years, we have been manufacturing high-performance plastic parts for our clients, and we have established ourselves as leading experts in the production of certain fluoropolymer products. Whilst we can design and produce almost any part or component that is...
- Seals
  
  We design and manufacture world-class plastic, rubber and elastomer seals.
  - Custom Seals
    
    When you’ve tried standard profile seals without success or know you’re going to need a bespoke solution for a particular project, we can deliver what you need.
  - Standard Seals
    
    AFT Fluorotec have an extensive range of PTFE materials and we can also produce seals in other materials such as VICTREX® PEEK, PU, FPM and NBR.
  - RCD Seals
    
    AFT Fluorotec have a broad range of experience in designing and manufacturing RCD seals for the oil & gas industry.
  - PTFE Seals
    
    From back up rings and mining seals to piston seals and o rings, we offer a wide range of sealing products machined from polytetrafluoroethylene (PTFE).
  - VICTREX PEEK Seals
    
    With outstanding mechanical, thermal and chemical resistance properties, PEEK is an ideal material to use for sealing applications.
  - Compressor Parts
    
    We pride ourselves on our expert knowledge of the compressor parts industry, providing a wide range of compounds suitable for your application.
- Tubes & Rods
  
  We can produce fluoropolymer tubes and rods in any size, shape or material type.
- Backup Rings
  
  We can design and manufacture an almost limitless range of VICTREX PEEK back up rings (BUR’s) as well as PTFE rings.
- Valve Seats
  
  We manufacture valve seats manufactured from our AF range of materials, including PTFE and VICTREX PEEK materials.
- PTFE Bellows
  
  What Are PTFE Bellows? PTFE bellows are flexible, accordion-like structures made from Polytetrafluoroethylene, a synthetic fluoropolymer known for its exceptional properties. These bellows are designed to provide a combination of flexibility and chemical resistance while maintaining their structural integrity. PTFE bellows are...
- Desalter Bushings
  
  Desalter Bushings, also known as Desalter Entrance Bushings, Desalter Vessel Entrance Bushings, and Dehydrator and TR Bushings, are crucial components in the oil refining industry. These specialised bushings are designed to improve the efficiency and reliability of the desalting process, a critical...
Slide Bearings

AFT Fluorotec have been manufacturing slide bearings for the UK construction industry for many years.
- PTFE Bearing Design
  
  Browse some of our typical PTFE slide bearing and skidway plate configurations and get in touch to discuss your requirements.
- Selection & installation guide
  
  PTFE slide bearings can be fixed to the installation by full welding, tack welding, mortar embedment or bolting.

One of the biggest uses of our specially created PTFE and PEEK filled grades can be found in the compressor industry. Piston and rider rings, which can be found in all types of compressors are almost exclusively made out of PEEK & PTFE compounds, which AFT Fluorotec have been specialising in for a number of years.

compressor appropriate materials

We pride ourselves on our expert knowledge of the compressor parts industry, providing a wide range of compounds suitable for your application. You'll find further data relating to each of our grades suitable for use within gas compressors below. AFT can modify these compounds to meet the specific operating performance of your application, and we can offer advice and help to ensure it is suitable for its intended use.

AF106: Lubricated glass-filled PTFE compound

AF106 is a lubricated glass-filled PTFE compound. Due to the glass content, AF106 is somewhat abrasive and care should be taken to not match AF106 with soft mating surfaces. Low creep and low wear, AF106 is the preferred material for natural gas applications. Recommended for both lubricated and non-lubricated applications for piston rings, rider rings, and rod packing.

TENSILE STRENGTH: 21-24 MPa
ELONGATION: 260-500%
APPROPRIATE SEALING COMPONENT: Piston Ring, Rider Ring, Rod Packing

	COMPRESSOR OPERATING CONDITIONS
TYPICAL GAS APPLICATIONS	LUBE	NON-LUBE	NON-LUBE DRY
Air
CO2
CO
CXHY
H2 Pure
H2 Mixes
Ethylene
Refrigeration

Download AF106 Datasheet

AF203: Carbon/graphite filled PTFE compound

AF203 is a compression moulded carbon/graphite filled PTFE compound with good mechanical and wear properties and resistant to most chemicals. A legacy choice for both lubricated and non-lubricated compressor piston rings, rider rings and rod packing, it remains a primary choice.

TENSILE STRENGTH: 14-20 MPa
ELONGATION: 85-180%
APPROPRIATE SEALING COMPONENT: Piston Ring, Rider Ring, Rod Packing

	COMPRESSOR OPERATING CONDITIONS
TYPICAL GAS APPLICATIONS	LUBE	NON-LUBE	NON-LUBE DRY
Air
CO2

Download AF203 Datasheet

AF204: Premium carbon filled PTFE compound

AF204 is a premium material suitable for the majority of non-lube applications, wet gas and oxygen service and all lubricated service. Excellent wear properties, often double the lifespan of traditional carbon filled PTFE compounds. Typical applications include refinery gas, refrigeration gas, hydrocarbons, oxygen and air.

TENSILE STRENGTH: 15 MPa
ELONGATION: 300%
APPROPRIATE SEALING COMPONENT: Piston Ring, Rider Ring, Rod Packing

	COMPRESSOR OPERATING CONDITIONS
TYPICAL GAS APPLICATIONS	LUBE	NON-LUBE	NON-LUBE DRY
Air
O2
NOX
CO2
CI2
NH3
CXHY
H2 Mixes
H2S
HCI
SO2
Vinyl chloride & similar
Ethylene
Ethylene oxide
Refrigeration

Download AF204 Datasheet

AF225: Proprietary PTFE compound for dry conditions

AF225 is a proprietary material offering very high modulus and low creep. Primarily rider rings, piston rings and rod packings in non-lube “dry” and “bone dry” gas compressor applications with a dew point as low as minus 40°C are where this material excels. Excellent performance in dry ethylene, hydrogen, dry natural gas.

TENSILE STRENGTH: 10 MPa
ELONGATION: 100%
APPROPRIATE SEALING COMPONENT: Piston Ring, Rider Ring, Rod Packing

	COMPRESSOR OPERATING CONDITIONS
TYPICAL GAS APPLICATIONS	LUBE	NON-LUBE	NON-LUBE DRY
Air
NOX
N2
CO2
NH3
CXHY
H2 pure
H2 mixes
Vinyl chloride & similar
Ethylene
Ethylene oxide

Download AF225 Datasheet

AF226: Established PTFE multi-filler material

AF226 is a multi-filler material which despite advancements in PTFE material science, remains a primary choice and well established PTFE based material for compressor applications where air, methane, ethylene, propylene or hydrogen is present.

TENSILE STRENGTH: >16 MPa
ELONGATION: >140%
APPROPRIATE SEALING COMPONENT: Piston Ring, Rider Ring

	COMPRESSOR OPERATING CONDITIONS
TYPICAL GAS APPLICATIONS	LUBE	NON-LUBE	NON-LUBE DRY
Air
NOX
CO2
Cl2
NH3
CXHY
H2 mixes
H2S
HCI
SO2
Vinyl chloride & similar
Ethylene
Ethylene oxide
Refrigeration

Download AF226 Datasheet

AF403: Temperature tolerant PTFE compound

AF403 performs particularly well at high discharge temperatures and is recommended for non-lubricated air, oxygen and gas compressors. Similar to AF410, AF403 offers excellent conductivity/heat dissipation. As well as general high-temperature applications, this is a great choice where high ambient temperatures are present.

TENSILE STRENGTH: 2,320psi
ELONGATION: 350-420%
APPROPRIATE SEALING COMPONENT: Piston Ring, Rider Ring, Rod Packing

TYPICAL GAS APPLICATIONS	LUBE	NON-LUBE	NON-LUBE DRY
Air
O2
NOX

Download AF403 Datasheet

AF410: Pressure tolerant PTFE compound

AF410 is a grade specifically developed for high temperature and high-pressure air/wet air compressor applications, piston rings, rider rings and rod packings. AF410 has better thermal conductivity than carbon and glass-filled PTFE compounds. AF410 offers a very low and stable rate of wear, even when operating saturated at high temperatures.

TENSILE STRENGTH: 30 N/mm2
ELONGATION: >260%
APPROPRIATE SEALING COMPONENT: Piston Ring, Rider Ring, Rod Packing

	COMPRESSOR OPERATING CONDITIONS
TYPICAL GAS APPLICATIONS	LUBE	NON-LUBE	NON-LUBE DRY
Air
NOX

Download AF410 Datasheet

AF803: High performance polymer

AF803 is a very high-performance hot moulded polymer material for lubricated very high-pressure applications. Excellent performance in gas applications including hydrogen, ammonia, carbon dioxide and ethylene. A proven high performer in reciprocating compressors worldwide and is also compatible for use with metallic packings.

TENSILE STRENGTH: 141 MPa
ELONGATION: 2.2%
APPROPRIATE SEALING COMPONENT: Piston Ring, Rider Ring

	COMPRESSOR OPERATING CONDITIONS
TYPICAL GAS APPLICATIONS	LUBE	NON-LUBE	NON-LUBE DRY
Air
CO2
CXHY
H2 Pure
H2 Mixes
Ethylene

Download AF803 Datasheet

WHY CHOOSE AFT FLUOROTEC FOR YOUR COMPRESSOR PARTS?

One of AFT Fluorotec's unique selling points is our ability to machine PTFE and PEEK filled grades up to 1800mm, unlike most of our competitors who only have the ability to machine up to 1000mm.

This combined with our rapid turnaround and ability to deliver on your needs while maintaining a very high level of quality is why our customers choose our services.

Machined compressor parts

Due to our continued investment in our CNC machining facilities, we are able to produce solid, segmented or cut rings with incredibly quick turnaround times whilst still achieving exact tolerances. We can also offer custom components if your project requires something unique.

ROD PRESSURE PACKING

Rod Packings or Rod Pressure packings are used to seal any residual gas coming from the cylinder along the Piston Rod. Material selection and packing design depend on the nature of the gas, discharge pressure and temperature as well as the linear speed of the piston rod.

PISTON Rings

Piston Rings are mounted on the pistons of lubricated or non-lube (oil-free) compressors, and are designed to ensure that the gas is compressed and to provide a seal between the piston and the cylinder. The Piston Ring is an essential part of a reciprocating compressor, as it enables the requested or required performance in terms of flow rates and pressures to be achieved.

RIDER RINGS

Rider Rings are used mainly in oil-free or mini-lube compressors to support and guide the piston and rod assembly and prevent contact between the piston and the cylinder. The materials used have the same wear resistance as the Piston Rings, in order to meet the requirements of the most stringent conditions of service.