A chart listing the most popular compounds and their fluid compatibility / technical information.
GPlast (Gapi) Perfluoroelastomer O-Ring
GPlast perfluoroelastomer o-ring material is a high-performance perfluoroelastomer. These compounds were formulated to meet the needs of a variety of industries, including aerospace, automotive, chemical processing, construction, food, gas, heavy industry, oil, pharmaceutical, and semiconductor.
What Is GPlast®?
GPlast® is a family of perfluoroelastomer (FFKM) compounds developed by Gapi Group, engineered to offer high-performance sealing in extreme chemical and thermal environments. As part of GAPI’s advanced elastomer portfolio, GPlast® combines the chemical inertness of PTFE with the elasticity and sealing properties of rubber, making it well-suited for demanding static and dynamic applications.
GPlast® materials are designed for use across a broad range of industries, including semiconductor manufacturing, chemical processing, pharmaceutical production, oil & gas, and food & beverage, where aggressive media, high purity requirements, or extreme temperatures can quickly degrade standard elastomers. Depending on the compound grade, GPlast® can perform in continuous service temperatures up to 260 °C (500 °F) while resisting acids, solvents, hydrocarbons, steam, and more.
Contact us today to discuss your custom GPlast part requirements.
As an authorized distributor and experienced fabricator, we have deep expertise in working with GPlast perfluoroelastomer materials across a wide range of industries, including semiconductor, chemical processing, pharmaceutical, and food & beverage.
Have a unique sealing challenge?
Let Seal & Design help you solve it. Our team is ready to partner with you to create a custom GPlast sealing solution that meets your exact specifications.
Key Features & Benefits of GPlast®
- Excellent Chemical Resistance
Resists degradation from a wide spectrum of aggressive media, including strong acids, oxidizers, bases, esters, and amines. - High Thermal Stability
Operates reliably in elevated temperatures, typically up to 260 °C (500 °F), depending on the compound. - Low Compression Set
Maintains long-term sealing performance in both static and dynamic applications. - Wide Industry Compatibility
GPlast® compounds are used in environments that demand clean processing, chemical resistance, and extended seal life. - Available in Regulatory-Compliant Grades
Select formulations are compliant with FDA and other industry-specific regulations, making them suitable for food, pharma, and biotech sectors.
Typical Applications
GPlast® perfluoroelastomer seals are used where performance and reliability are critical:
- Semiconductor Processing — wet and dry process seals, vacuum system components
- Chemical Manufacturing — gaskets and O-rings in reactors, pumps, and mixers
- Oil & Gas — seals exposed to sour gas, high pressure, and elevated temperatures
- Pharmaceuticals & Biotech — cleanroom and CIP/SIP process seals
- Food & Beverage — hygienic seals in compliant formulations
Why Choose GPlast®?
GPlast® is a trusted solution for those who need high-performance FFKM seals at a competitive cost, particularly when compared to other branded materials like Kalrez®, Chemraz®, or Perlast®.
GPLAST COMPOUNDS
Style
Description
Temp. Ranges °F (°C)
Durometer
Color
Datasheet
260B
This Black material provides excellent temperature resistance up to +260ºC (+500ºF) and has similar chemical resistance to that of PTFE but with elastomeric properties comparable to standard fluorocarbon rubbers. This grade is suitable for use in a wide range of applications where other polymers are not suitable.
-15 to 260
75
Black
260W
Developed for applications where Carbon Black filled materials are not suitable.
-15 to 260
80
White
300W
It has been formulated specifically for use in the semiconductor industry to offer low weight loss in oxygen and fluorinebased plasma with low outgassing.
-15 to 300
75
White
316B
Developed for optimum resistance through thermal cycling. This material is not suitable for high temperature water and steam applications.
-15 to 316
80
Black
330B
Developed for its performance at constant elevated temperatures. This material is not suitable for high temperature water or steam applications.
-15 to 330
80
Black
643
This white material has been specifically developed for use with a wide range of potent active pharmaceutical ingredients (API’s) and aggressive cleaning agents, being especially suited to withstand steam-in-place (SIP) and clean-in-place (CIP) procedures.
-10 to 230
75
White
LT-40
Has similar chemical resistance to that of PTFE but with elastomeric properties comparable to standard fluorocarbon rubbers. Along with all our GPlast™ range, this grade is suitable for use in a wide range of applications where other polymers are not suitable.
-45 to 240
75
Black
LT-40
Has similar chemical resistance to that of PTFE but with elastomeric properties comparable to standard fluorocarbon rubbers. Along with all our GPlast™ range, this grade is suitable for use in a wide range of applications where other polymers are not suitable.
-15 to 260
65
Green
GPLAST OIL AND GAS AED RESISTANT
Style
Description
Temp. Ranges °F (°C)
Durometer
Color
Datasheet
ED105
This black explosive decompression material provides excellent temperature and high-pressure resistance. Along with all our GPlast™ range, this grade is suitable for use in a wide range of applications where other polymers are not suitable.
-15 to 260
90
Black
T128 NORSOK M-710
This compound is designed to give the best performance for rapid gas decompression.
-15 to 230
90
Black
300B AED
Black anti-explosive decompression material. Developed for optimum resistance through thermal cycling. This material is also suitable for high temperature water and steam applications.
-15 to 300
90
Black
316B AED Resistant
Black anti explosive decompression material. Developed for optimum resistance through thermal cycling. This material is not suitable for high temperature water or steam applications.
-15 to 316
90
Black