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Downhole back-up rings are specialized, rigid components designed to prevent O-ring extrusion under high pressure, temperature, and chemical exposure, typically manufactured from PEEK (Polyether ether ketone), PTFE (Polytetrafluoroethylene), and other high-performance thermoplastics. PEEK is preferred for its high strength (up to 500°F/260°C), while PTFE offers superior chemical compatibility and low friction.
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Web results
Backup Rings and Their Importance to High-Pressure ...
CDI Products
https://www.cdiproducts.com › blog › aerospace-backu...
CDI Products
https://www.cdiproducts.com › blog › aerospace-backu...
What are Backup Rings? A Backup ring is rigid ring typically made from thermoplastic material like virgin or filled PTFE (polytetrafluoroethylene), or high ...Read more
PEEK Back-Up Rings
Gallagher Fluid Seals
https://www.gallagherseals.com › blog › the-pros-and-co...
Gallagher Fluid Seals
https://www.gallagherseals.com › blog › the-pros-and-co...
The most common custom material for back-up rings is usually PEEK (polyether ether ketone). PEEK has some distinct advantages as a back-up ring material.
Choosing Backup Rings: A Guide
Global O-Ring and Seal
https://www.globaloring.com › Category: O-Rings
Global O-Ring and Seal
https://www.globaloring.com › Category: O-Rings
Aug 16, 2023 — Chemical Compatibility: Backup ring materials must be compatible with the fluids or chemicals present in the system to prevent degradation.Read more
What Is Back Up Ring?
JST-Seals
https://www.jst-seals.com › blog › what-is-back-up-ring_...
JST-Seals
https://www.jst-seals.com › blog › what-is-back-up-ring_...
In the oilfield of demanding working conditions, PEEK back up rings can be used in multiple down-hole drilling applications where pressures can be up to 5,000 ...Read more
Back-up Rings, Anti-extrusion Rings
AHP Seals
https://ahpseals.com › back-up-rings
AHP Seals
https://ahpseals.com › back-up-rings
Back-up rings provide added extrusion resistance and prevent damage to O-rings and seals when subjected to high pressures, larger extrusion gaps, ...Read more
Back-Up Rings – Hultec – The Future Is Sealed With ...
Hultec
https://hultec.com › solution › back-up-rings
Hultec
https://hultec.com › solution › back-up-rings
Engineered for demanding downhole and subsea environments, they prevent O-ring material from extruding into clearance gaps under high internal pressure— ...Read more
PEEK Backup Rings: Material Advantages and Typical ...
LinkedIn · PEEK CHINA
1 reaction · 4 months ago
LinkedIn · PEEK CHINA
1 reaction · 4 months ago
Compared with traditional backup ring materials such as PTFE or nylon, PEEK backup rings offer superior mechanical strength, thermal stability, ...Read more
Guide to Backup Rings in High Pressure Sealing Industries
AFT Fluorotec
https://www.fluorotec.com › News
AFT Fluorotec
https://www.fluorotec.com › News
Jan 29, 2025 — A backup ring is a rigid ring that is usually made from thermoplastic material like filled PTFE (polytetrafluoroethylene) or PEEK (polyether ...Read more
People also ask
What materials are used in backup rings?
A backup ring is a ring of hard, extrusion resistant material such as high-durometer Nitrile, Viton® (FKM), or PTFE. A backup ring is designed to fit between the o-ring and the extrusion gap and prevent the extrusion of the o-ring.
Backup Rings - Global O-Ring and Seal
Global O-Ring and Seal
https://www.globaloring.com › backup-rings
Global O-Ring and Seal
https://www.globaloring.com › backup-rings
What are backing rings made of?
A backing ring is a drilled, flat collar which is used to bolt a flange to another flange. The ring may be made from various plastic or metallic materials, but the dimensions of the drilling of the ring, unless a custom made one, should conform to set flange tables.
Backing Rings Article - Plastic Pipe Shop
Plastic Pipe Shop
https://www.plasticpipeshop.co.uk › articles › Backing-Ri...
Plastic Pipe Shop
https://www.plasticpipeshop.co.uk › articles › Backing-Ri...
What is a PTFE backup ring?
PTFE Back-Up Rings are used to prevent the extrusion of elastomeric o-rings in a dynamic or static sealing application. Most o-rings will begin to wear when subjected to increasing temperatures and pressures and will begin to extrude into any gaps next to the o-ring groove.
PTFE BACK-UP RINGS - MFP SEALS
MFP SEALS
https://www.mfpseals.com › files › mfp_file_downloads
MFP SEALS
https://www.mfpseals.com › files › mfp_file_downloads
What does a backup ring do for an O-ring?
Backup rings are rigid sealing components installed alongside o-rings to prevent extrusion under pressure. When system pressure forces an elastomeric seal toward the clearance gap between mating components, the backup ring acts as a barrier, supporting the o-ring and maintaining sealing integrity.Aug 16, 2023
Choosing Backup Rings: A Guide | Global O-Ring and Seal
Global O-Ring and Seal
https://www.globaloring.com › Category: O-Rings
Global O-Ring and Seal
https://www.globaloring.com › Category: O-Rings
Web results
ANTI-EXTRUSION BACK-UP RINGS
Engineered Seals & Components
https://www.engseals.com › uploads › 2023/03
Engineered Seals & Components
https://www.engseals.com › uploads › 2023/03
PDF
The anti-extrusion Back-up Ring likely found its roots in the use of leather packings. Leather was used as the sealing.Read more
19 pages
Back-up Rings for Oil & Gas Applications - Trelleborg
oilandgas-seals.com
https://www.oilandgas-seals.com › ... › Static Seals
oilandgas-seals.com
https://www.oilandgas-seals.com › ... › Static Seals
Back-up Rings are protective and supporting elements with no sealing function. Made from extrusion-resistant materials such as Turcon®, Zurcon®, Hi-Mod® or ...Read more
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