GRAFOIL® Flexible Graphite Grades
STYLE GTA – NUCLEAR GRADE: A special grade having an extremely low ash content.
Standard nuclear grade 99.5% graphite minimum. Certification of less than 50 ppm leachable chlorides will be furnished upon request. Contains no binders or resins.
STYLE GTB – INDUSTRIAL GRADE: Our most popular style sheet. Recommended for
gasketing applications up to 3000 degrees Fahrenheit in non-oxidizing atmospheres. Virtually
all chemical services. 95% graphite minimum. 100 PPM leachable chloride maximum. Monolithic sheet, no binders or resins, mechanical bond.
STYLE GHE – CORROSIVE SERVICE: Metal inserted GTB sheet. GRAFOIL® Flexible Graphite sheets mechanically bonded to a .006″ thick sheet of 316 SS which provides a stronger gasket for corrosive services. Available in 24″ x 24″ x .062″ thick.
STYLE GHG – NON-CORROSIVE SERVICE: Metal inserted GTB sheet. Flexible Graphite sheets are bonded to a .002″ think sheet of carbon steel providing a stronger gasket for non-corrosive services.
Other Available Grades
GRADE GTK – A new corrosion and oxidation inhibiting packing and gasketing material. GRAFOIL®Grade GTK contains an inorganic passivating corrosion inhibitor, which is Uniformly distributed throughout the product during its manufacture. This process eliminates localized “hot spots” of corrosion which can occur with impregnated or coated passivating and sacrificial inhibitors.
GRADE GHL – Uncured adhesive bonded laminate made from GTB.
GRADE GHB – Cured laminate sheet made from GTB
GRADE GHS – SS 316 wire mesh (screen) inserted and laminated GTB sheet adhesive bonded laminate. Screen is 24 mesh (24 wire/inch)(.0075 screen) uncured.
GRADE GHR – SS 316 or 312 inserted laminate made of GTB. Insert .002 thickness adhesive bond. Uncured.
GRADE GHQ – Aluminum insert .005 Tk. Laminate made of GTB material. Uncured.
STYLE GTH – THREAD SEALANT TAPE: A self-adhesive, corrosion resistant all temperature GRAFOIL® Flexible Graphite tape thread sealant for pipe joints. Available in .005″ x 1/2″ x 25′ and .005″ x 1″ x 25′.
GRAFOIL® is a registered trademark of GrafTech International Holdings Inc.