KLINGER® Graphite Laminate PDM

The more highly compressed pure graphite gasket with two rough sheet metal inserts

Basis

Glueless gasket material consisting of expanded graphite and two 0.1mm thick tanged stainless steel insert. The material is free from resins, impregnations or other organic compounds. Therefore it is free of eventual toxic risks. Stable physical properties over the whole temperature range.

Areas of application

KLINGER^® Graphite Laminate PDM is suitable for high-pressure applications, hot water and steam at high temperatures up to 450°C.

Key features

Mechanically bonded tanged stainless steel inserts
Free of organic resins or toxic risks
Excellent chemical resistance
Excellent high temperature resistance

Benefits

Stable physical properties over the whole temperature range
Very good tightness
Suitable for high pressure applications

Typical technical data for thicknesses 1.0, 1.5 and 2.0 mm

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			1.0 mm	1.5 mm	2.0 mm
Density of the graphite layer	DIN 28090-2	g/cm³	1.3	1.3	1.3
Purity of graphite¹⁾	DIN 51903	%	≥ 99.0	≥ 99.0	≥ 99.0
Metallic reinforcement	Tanged metal Thickness Number of sheets	mm	1.4401 0.10 2	(oder 1.4404) 0.10 2	0.10 2
Compressibility ASTM F 36 A		%	15 – 25	15 – 25	15 – 25
Recovery ASTM F 36 A		%	35 – 45	35 – 45	35 – 45
Stress relaxation DIN 52913	16 h / 50 MPa / 300 °C	MPa	≥ 48	≥ 48	≥ 48
KLINGER cold/hot compression 50 MPa	Thickness decrease at 23 °C Thickness decrease at 300 °C	% %	20 – 28 1 – 3	20 – 28 1 – 3	20 – 28 1 – 3
Specific leakrate λ	DIN 28090-2	mg/s x m	< 0.08	< 0.10	< 0.10
Chloride content of graphite layer²⁾	DIN 28090-2	ppm	≤ 40	≤ 40	≤ 40

¹) Nuclear quality with a purity of ≥99,8 available on request
²) Detailed specifications of the used graphite foils are found in our Graphite vademecum, which will be sent to you on request with pleasure

Dimensions of the standard sheets

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Sizes	1000 x 1000 mm, 2000 x 1000 mm, 1500 x 1500 mm
Thicknesses	1.0 mm, 1.5 mm, 2.0 mm, 3.0 mm
Tolerances	Thickness ±5 % Length ±4 mm, Width ±4 mm

Other thicknesses, sizes and inserts on request.

Function and durability

The performance and service life of KLINGER gaskets depend to a large extent on proper storage and fitting – factors beyond the manufactor’s control. We can, however, vouch for the excellent quality of our products. With this in mind, please also take note of our installation manual.