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High Performance O-Rings

High Performance O-Rings

Product catalog summary

Introduction to O-Rings:
O-Rings are crucial sealing components in industrial applications, available in various materials with distinct properties and limitations.

FEP-O-SEAL® O-Rings:
These O-Rings feature an elastomer core with a seamless PTFE-FEP covering, combining PTFE's chemical resistance with elastomer resilience. They are available with silicone or fluoroelastomer cores and can withstand temperatures as low as -60°C.

Virgin PTFE O-Rings:
Used as static seals, these O-Rings must be enclosed to minimize creep. They are chemically resistant but prone to cold flow and require high compression forces.

Metal O-Rings:
Made from metal tubing, these O-Rings resist high temperatures and pressures, suitable for aggressive fluids but are single-use and require high compressive forces.

KALREZ® Perfluoroelastomer O-Rings:
KALREZ® combines fluoroelastomer properties with PTFE's chemical and thermal resistance, offering durability and a maximum service temperature of +327°C. They are costly due to complex manufacturing.

Advantages of KALREZ®:

High thermal resistance up to +327°C.
Universal chemical resistance.
Elastic behavior similar to elastomers.
Resistant to aging and weathering.
Low gas exhalation under heat and vacuum.
High dielectric strength and flame resistance.

Chemical Resistance:
KALREZ® components resist most chemicals, including solvents, acids, bases, and fuels, with limitations in liquid alkalis and certain fluorine compounds.

Thermal Stability and Recovery:
KALREZ® maintains properties at high temperatures and performs well under cyclic temperature variations.

Compression Set and Testing:
KALREZ® shows superior performance over time compared to conventional elastomers, evaluated using the Lucas test under practical conditions.

Specifications and Performance:
KALREZ® O-Rings maintain sealing properties across temperature variations, with compression set tests indicating pressure failure as a primary cause of high values.

Testing Procedures:
The Lucas test measures seal tightness after aging, showing KALREZ®'s excellent long-term sealing properties.

Compression Set and Housing Design:
Designs must accommodate KALREZ®'s higher thermal expansion, with increased groove widths recommended.

Software Tools:
KALREZ® provides tools like the Application Guide to assist in designing optimal grooves and determining chemical resistance.

Thermal Expansion and Extrusion:
Consideration of thermal expansion rates is crucial, with PTFE back-up rings recommended to prevent extrusion.

Applications:
KALREZ® is used in industries like chemical processing, aerospace, and electronics, where conventional elastomers fail.

Material Properties:
KALREZ® 4079 is a black compound with excellent chemical resistance, suitable for continuous use up to +315°C.

Overview of KALREZ® Compounds:
KALREZ® compounds are high-performance perfluoroelastomers used in environments where standard elastomers fail.

KALREZ® 4079:
A carbon black-filled material with excellent chemical resistance, suitable for most industrial applications.

KALREZ® Spectrum™ 6375:
Offers optimal performance across a wide range of chemicals and temperatures, ideal for chemical industry applications.

KALREZ® Spectrum™ 7075:
Known for low compression set and high temperature tolerance, suitable for high-temperature applications.

KALREZ® 6221 FDA and 6230 FDA:
Designed for pharmaceutical and food industries, meeting FDA requirements with high chemical resistance.

KALREZ® 1050LF:
Resistant to hot water/steam and amines, used in chemical processing industries.

KALREZ® 2037:
Free from carbon black, suitable for high elastomer purity applications.

KALREZ® 2035:
Offers good general chemical resistance, particularly resistant to hot water and steam.

KALREZ® 3018:
High hardness and modulus, ideal for high-pressure applications.

KALREZ® 1058:
Low hardness and modulus, suitable for applications requiring low compression force.

Overview of KALREZ® Compounds:
Specialized materials used in chemical processing and biochemical industries, tailored for specific applications.

KALREZ® 2035:
Recommended for ethylene oxide and propylene oxide applications.

KALREZ® 3018:
High resistance to hot water, steam, and amines.

KALREZ® 1058:
Contains a fluorinated oil plasticizer, suitable for low sealing force applications.

KALREZ® 4001:
Excellent chemical resistance, especially against acids.

Ultrapure Compounds for Semiconductor Industry:
Developed for ultrapure environments, used in silicon chip production.

FEP-O-SEAL® O-Rings:
Combines elastomer elasticity with TEFLON® FEP/PFA chemical resistance, FDA approved for food contact.

Key Advantages:
High chemical resistance and thermal stability, effective in maintaining seal integrity.

Applications:
Used in chemical plants, food and beverage industry, pharmaceutical plants, and semiconductor industry.

Tolerances:
Detailed tolerances for cross-sectional and inner diameters ensure precise application fit.

Specifications:
FEP-O-SEAL® operates in temperatures from -60°C to +200°C, with short-term exposure up to +230°C.

Function and Structure:
The seamless covering ensures sealing, while the elastomer core provides resilience and uniform pressure.

Gas Permeability and Thermal Stability:
FEP-O-SEAL® can be used from -60°C to +200°C, with PFA covering allowing up to +260°C.

Design and Mounting:
Recommended for static applications, with dynamic use requiring low p·v values and prior testing.

Applications:
Used in industries where aggressive fluids damage conventional elastomers.

Mounting Instructions:
Ensure no sharp edges or dirt in the mounting area, and avoid using force to prevent damage.

Summary Table:
Provides temperature ranges and specifications for different FEP-O-SEAL® versions.

Specifications:
FEP-O-SEAL® O-Rings should be resized after mounting for better recovery.

Procedures:
PTFE O-Rings are used for static seals and require specific housing dimensions.

Norms and Recommendations:
Operating limits and surface finish standards are recommended for effective sealing.

Materials:
PTFE O-Rings are made from virgin PTFE, suitable for aggressive fluids.

Designs:
Standard and self-reinforcing designs are available for different pressure and temperature requirements.

Key Data from Tables:
Includes tolerances and material coatings with their thickness and temperature limits.

Critical Information:
Metal O-Rings require high compression forces and are not reusable, offering high resistance to temperature and pressure.

Catalog excerpts

O-Ring per alte prestazioni High Performance O-Rings

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Indice Contents Note generali sugli O-Ring ad alte prestazioni Elastomero perfluorurato KALREZ ® O-Ring FEP-O-SEAL® O-Ring in PTFE vergine O-Ring e C-Ring metallici Ulteriori informazioni General notes on the High Performance O-Rings KALREZ ® perfluorelastomer O-Rings FEP-O-SEAL® O-Rings Virgin PTFE O-Rings Metal O-Rings, metal C-Rings Further information © Copyright by Angst + Pfister 2003 Con riserva di modifiche i dati tecnici sono da considerarsi informativi. Copyright by Angst + Pfister 2003 Subject to alteration All specification for information only. 3 7 20 28 30 36

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O-Ring ad alte prestazioni High Performance O-Rings 3 Note generali sugli O-Ring ad alte prestazioni General notes on the High Performance O-Rings Assortimento Range Gli O-Ring dell’assortimento «Alte prestazioni» assolvono le esigenze più elevate di effetto di tenuta e si distinguono per la loro resistenza chimica e termica eccezionale. Possono essere raggiunte o addirittura oltrepassate le caratteristiche delle materiale PTFE (TEFLON ®). La mancanza di elasticità del PTFE viene eliminata dal comportamento elastico negli O-Ring in KALREZ ®, e FEP-O-SEAL® Per questo scopo, dei materiali flessibili...

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Resistenza chimica A A B O-Ring KALREZ ® FFKM KALREZ ® FFKM O-Rings O-Ring FEP-O-SEAL® rivestiti con FEP FEP-O-SEAL® with FEP coating O-Rings O-Ring in PTFE vergine Virgin PTFE O-Rings O-Ring metallici C-Ring metallici Metallic O-Rings Metallic C-Rings eccellente ottimo buono scarso A Product/ Material A B C D Chemical resistance Prodotto/ Materiale Scelta secondo criteri d’impiego principali A B C D A (+ 980) C (+ 210) C (+ 200) B (+ 327) (°C) excellent very good good poor High temperature use Impiego ad alte temp. A A B C Low temperature use Impiego a basse temp. Chosen according to main use...

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O-Ring ad alte prestazioni High Performance O-Rings O-Ring in elastomero perfluorurato KALREZ ® In gravose condizioni d’impiego non esiste nessun altro elastomero che raggiunge il comportamento globale d’impiego dell’elastomero perfluorurato KALREZ ® la gomma sintetica KALREZ ® unisce l’elasticità e la forza di tenuta di un vero elastomero con la resistenza chimica del PTFE. Le parti in KALREZ ® resistono all’aggressione di quasi tutte le sostanze chimiche, come per esempio eteri, solventi, chetoni, esteri, ammine, carburanti, acidi e soluzioni saline. Per questo, le tenute in KALREZ ® mantengono...

Open the catalog to page 7

O-Ring ad alte prestazioni High Performance O-Rings O-Ring FEP-O-SEAL® Il FEP-O-SEAL® è un O-Ring con un nucleo in elastomero con un rivestimento senza giuntura di PTFE-FEP. Al contrario degli O-Ring con giuntura periferica, nel FEP-O-SEAL® il mantello è completamente chiuso. Gli O-Ring in PTFE vergine sono universalmente resistenti agli agenti chimici, ma hanno il difetto della deformazione permanente a causa dell’estrusione, specialmente ad alte temperature. Gli O-Ring in elastomero possiedono una forza antagonista permanente, ma non sono universalmente resistenti agli agenti chimici.La combinazione...

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O-Ring ad alte prestazioni High Performance O-Rings 7 Elastomero perfluorurato KALREZ ® KALREZ ® perfluoroelastomer Generalità General notes L’elastomero perfluorurato KALREZ ® unisce molte proprietà dell’elastomero fluorurato FPM alla resistenza chimica e termica del materiale fluorurato PTFE. Gli O-Ring KALREZ ® si distinguono con un eccellente comportamento per lungo tempo, che si rispecchia in un migliore comportamento compression-set con un tempo di servizio a partire da 100 ore. La deformazione permanente dei compound KALREZ ® rimane irraggiungibile ed offre la garanzia di una ottimale...

Open the catalog to page 9

O-Ring ad alte prestazioni High Performance O-Rings 8 Resistenza chimica Resistance to chemicals Le parti in KALREZ ® resistono all’aggressione chimica di quasi tutte le sostanze chimiche, come eteri, solventi, chetoni, esteri, ammine, ossidanti, carburanti, acidi e basi. Per questo garantiscono un funzionamento sicuro a lungo termine praticamente in tutti i procedimenti chimici e petroliferi, spesso anche dove degli additivi corrosivi o delle impurità possono distruggere rapidamente altri elastomeri. KALREZ ® components withstand attack by virtually all chemicals, such as ethers, solvents, ketones,...

Open the catalog to page 10

O-Ring ad alte prestazioni High Performance O-Rings Prospetto generale della resistenza chimica General chemical resistance table Mezzo Means Temp. di prova Test temp. Aumento di volume dei compound KALREZ® Increase in KALREZ® compounds volume 4079 °C Acidi 9 <10 % 6375 <15 % <10 % 1050LF <15 % <10 % 2035 <15 % <10 % <15 % Acids Acido cloridrico/Hydrochloric acid, 30% 50 © © Acido fluoridrico/Hydrofluoric acid, 30% 85 © © Acido nitrico/Nitric acid, 40% 50 © © Acido nitrico/Nitric acid, 70% 50 © © Acido nitrico/Nitric acid, 90% 200 © © © © © © © ©ቢ © Acido solforico/Sulphuric acid, 70% 50 © ©...

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O-Ring ad alte prestazioni High Performance O-Rings 10 Stabilità termica Thermal stability Le parti in elastomero fluorurato KALREZ ® mantengono le loro proprietà elastiche in servizio a lungo tempo a + 327° C ed in servizio intermittente fino a + 350° C, anche a contatto con sostanze corrosive. Questo significa un comportamento affidabile in servizio con temperature fino a 120° C superiori a quelle che possono sopportare le parti in altri elastomeri del commercio. KALREZ ® components retain their elastic properties in continuous service at temperatures up to + 327° C and in intermittent service...

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O-Ring ad alte prestazioni High Performance O-Rings Il Lucas test permette di ottenere risultati più affidabili di ogni altro test. Nel diagramma seguente sono comparate le forze di tenuta residue di O-Ring in KALREZ ® 4079, 7075 e FPM (fluoroelastomero) in funzione dell’invecchiamento in aria a +200°C. La prova evidenzia come KALREZ ® continui ad avere funzioni di tenuta eccellenti per molti anni. 11 More reliable results are obtained by the Lucas Test than by any other test. The following diagram compares the residual tightness strengths of KALREZ ® 4079, 7075 and FPM (fluoroelastomer) O-rings...

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