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DONIFLEX® G-U Gasket Sheet

DONIFLEX® G-U Gasket Sheet

DONIFLEX® G-U Gasket Sheet

Product catalog summary
Overview: The document describes DONIFLEX® G-U, a graphite-based composite material that combines aramid and special functional inorganics. It is designed for heavy-duty applications, offering excellent physicochemical properties such as thermal, chemical, and stress resistance. The material is highly compressible and flexible, making it suitable for uneven surfaces. It is particularly useful in steam supply, heating systems, and the chemical industry. A version with a metal insert is available for higher pressure applications, and it features an anti-stick property for easy gasket replacement after high-temperature service.
Composition and Approvals: The composite is composed of graphite, aramid fibers, functional inorganic fillers, and an NBR binder. It is optionally available with expanded metal reinforcement (AISI 316L, 0.15 mm). The color of the material is anthracite.
Properties and Applications: The material exhibits superior sealability, excellent thermal and mechanical resistance, and very good chemical resistance. It is suitable for general purposes, steam supply, chemical and petrochemical industries, paper and cellulose industries, power plants, and high-temperature applications.
Technical Data: For a thickness of 2 mm, the material has a density of 1.25 g/cm³, compressibility of 35%, and recovery of 25%. It has a tensile strength of 5 MPa longitudinally and stress resistance of 42 MPa. The material shows minimal thickness and weight increase when exposed to oil and fuel.
Pressure-Temperature Diagram: The P-T diagram provides guidance on the maximum permissible combination of internal pressure and service temperature for the gasket. Thinner gaskets generally exhibit better P-T properties.
Chemical Resistance: The document includes a comprehensive chemical resistance chart, indicating the material's compatibility with various chemicals. It is recommended for use with many substances, including acetic acid, ammonia, and various hydrocarbons, while not recommended for others like sulfuric acid and nitric acid.
Dimensions and Availability: Sheet dimensions are available in sizes of 1500 x 1480 mm and 2000 x 1480 mm, with thicknesses ranging from 0.5 mm to 3.0 mm. Rolls are also available, and other sizes can be requested.
Contact Information: The document provides contact details for DONIT TESNIT, d.o.o., including their address in Slovenia, phone numbers, and email for further inquiries.
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Catalog excerpts

DONIFLEX® G-U Gasket Sheet-1

0DONIT Devoid of any trace of organic solvents, this graphite-based composite allaying aramid and special functional inorganics, is an advanced heavy-duty material. It displays excellent physicochemical properties (thermal, chemical and stress resistance, etc.) with a high compressibility and flexibility enabling it to conform to uneven surfaces. Steam supply, heating systems, and chemical industry are amongst its well-suited application. The version with a metal insert withstands higher pressures. Also, fitted with a highly performant anti-stick, gasket replacement is quite effortless following prolonged elevated temperature service. THERMAL RESISTANCE APPROPRIATE INDUSTRIES & APPLICATIONS SUPERIOR EXCELLENT VERY GOOD GOOD MODERATE MECHANICAL RESISTANCE SEA^ABI LITY CHEMICAL PERFORMANCE RESISTANCE POTABLE WATER SUPPLY «> B O STEAM SUPPLY CHEMICAL INDUSTRY PETROCHEMICAL INDUSTRY P-T diagram indicates the maximum permissible combination of internal pressure and service temperature which can be simultaneously applied to a given gasket according to its material type, thickness, size and tightness class. Given the wide variety of gasket applications and service conditions, these values should only be regarded as guidance for the proper gasket assembly. In general, thinner gaskets exhibit better P-T properties. ■ General suitability - Under common installation practices and chemical compatibility. ■ Conditional suitability - Appropriate measures ensure maximum preformance for joint design and gasket installation. Technical consulation is recommended. Limited suitability - Technical consultation is mandatory. ■ Saturated steam curve

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DONIFLEX® G-U Gasket Sheet-2

All information and data quoted are based upon decades of experience in the production and operation of sealing elements. This data may not be used to support any warranty claims. With its publication this latest edition supersedes all previous issues and is subject to change without further notice. Head office: DONIT TESNIT, d.o.o. Cesta komandanta Staneta 38 1215 Medvode, Slovenia Phone: +386 (0)1 582 33 00 E-mail: [email protected] For disclaimer please visit http://donit.eu/disclaimer Copyright © DONIT TESNIT, d.o.o. All rights reserved Date of issue: 04.2021 / TDS-DGU-1 1-2020

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.