Brand: Klinger

Klinger top-chem 2006 Alkali-Resistant PTFE Gasket Sheet

Name: Klinger top-chem 2006 PTFE Gasket Sheet – Datasheet & Quote
Brand: Klinger
SKU: top-chem 2006

Description

Barium-sulfate PTFE sheet for strongly alkaline media

KLINGER top-chem 2006 is made from PTFE filled with barium sulfate and, according to Klinger, is free from pigments. It offers excellent resistance in strongly alkaline applications and good mechanical properties at medium and low temperatures and loads, and is used mainly in the chemical industry.

Features named on the product page are use mainly in alkaline media, consistent material composition and resistance to cold flow; the benefits are excellent chemical resistance, very good mechanical properties at medium temperatures and no ageing. Sheets are 1500 x 1500 mm and 1.0 to 3.0 mm thick.

Technical specifications

Parameter	Specification
Manufacturer / model	Klinger (Rich. Klinger Dichtungstechnik), KLINGER top-chem 2006
Basis composition	PTFE filled with barium sulfate (pigment-free)
Colour	White
Sheet size	1500 x 1500 mm
Thickness	1.0, 1.5, 2.0, 3.0 mm
Tolerances	Thickness per DIN 28091-1; length and width plus or minus 50 mm
Certificates and approvals as printed	Oxygen-tested, DIN-DVGW, DNV approval, TA-Luft (Clean air), FDA conformity (components comply with FDA requirements), VDI 2200 blowout
Industries listed	General industry, chemical, oil and gas, energy, infrastructure, pulp and paper, marine, automotive, food and beverage, pharma
Compressibility, ASTM F 36 M (2.0 mm)	4 %
Recovery, ASTM F 36 M	40 %
Stress relaxation, DIN 52913, 30 MPa, 16 h	18 MPa at 150 °C (30 MPa)
Klinger cold/hot compression, 50 MPa, thickness decrease	12 % at 23 °C; 41 % at 260 °C
Tightness, DIN 28090-2	0.01 mg/(s x m)
Specific leak rate, VDI 2440	3.60E-06 mbar x l/(s x m)
Thickness / weight increase after immersion (percent): 100 % H2SO4 18 h at 23 °C; 100 % HNO3 18 h at 23 °C; 33 % NaOH 72 h at 110 °C	no value printed (H2SO4); 1 / 2 (HNO3); 1 / 1 (NaOH)
Density	3.0 g/cm3
Thermal conductivity	0.40 W/mK
ASME code sealing factors, 2.0 mm, tightness class 0.1 mg/(s x m)	y 12 MPa, m 3.1
Chemical resistance chart in datasheet	A (small or no attack) in all twelve media groups printed on the chart

All values are typical values for a 2.0 mm sheet as printed in the Klinger datasheet; other thicknesses can differ.

Alkali service and the limits of top-chem 2006

The immersion test is the relevant evidence: 33 % sodium hydroxide for 72 hours at 110 °C produced 1 % thickness and 1 % weight increase. Nitric acid at 100 % gave 1 and 2 %, and no value is printed for sulfuric acid, so use top-chem 2005 or 2000 for acid duty. White, pigment-free material is also useful where colour contamination of the product is a concern.

The density of 3.0 g/cm3 is the highest of the PTFE grades. Hot compression at 260 °C is 41 %, stress relaxation at 150 °C is 18 MPa and the y and m factors are 12 MPa and 3.1, so keep temperature and bolt load in the medium range. The certificate list is shorter than for top-chem 2000: oxygen-tested, DIN-DVGW, DNV, TA-Luft, FDA conformity of components and VDI 2200 blowout.

Related KLINGER gasket sheets

Sheets that cover the same chemical-industry ground as top-chem 2006 are summarised below.

Model	Basis	Colour	Positioning printed by Klinger
KLINGER top-chem 2005	PTFE filled with inorganic fillers	Red	Strongly acidic media
KLINGER top-chem 2000	PTFE filled with silicon carbide	Grey	Heavy-duty, high mechanical load at high temperature
KLINGER top-chem 2003	PTFE filled with hollow glass microspheres	Blue	Sealing at low surface load; acids and alkalis
KLINGERSIL C-4500	Carbon fibres, heat-resistant additives, NBR	Black	Alkaline media and superheated steam; chemical industry

Documents, ordering details and quotation

Specify the alkali concentration and temperature, and whether a pigment-free sheet is required. To quote correctly we need the medium and concentration, working and test pressure, temperature, flange standard and facing, bolting, thickness and whether you want a whole sheet or gaskets cut to size. Klinger states that its values are typical and that site conditions vary, so confirm the grade with your own engineering or with Klinger before ordering for a critical duty. See also our wider range of gaskets, seals and pipe fittings.

Datasheets & Documents

Datasheet KLINGER top-chem 2006 datasheet, January 2026 Download

Reviews (0)

Reviews

There are no reviews yet.

How would you rate this product?

About brand

KLINGER is the Austrian sealing and valve group behind the KLINGERSIL fibre gasket sheets and the top-chem PTFE sheets. Richard Klinger founded the company in Vienna in 1886, and its headquarters is in Gumpoldskirchen, Austria. In 1898 he developed Klingerit, a fibre-reinforced gasket material, and in 1982 KLINGERSIL replaced asbestos with aramid fibres.

Seven Star LLC is an independent supplier in Muscat. We list KLINGER gasket sheets in fibre, graphite and PTFE grades, and supply them to refineries, plants and fabricators in Oman and the GCC by grade, thickness and sheet size.

KLINGER at a glance

Established	1886, Vienna, Austria, by Richard Klinger; headquarters in Gumpoldskirchen
Milestones	Reflex water level gauge in the 1880s and 1890s; Klingerit fibre-reinforced gasket in 1898; asbestos-free KLINGERSIL in 1982
Product families	Compressed fibre gasket sheets, PTFE sheets, graphite sheets, cut gaskets, valves and level gauges
Applications	Flanged joints on steam, water, oil, gas, chemical and acid lines

KLINGER gasket sheets we list

Grade	Material	Typical use
KLINGERSIL C-4400, C-4300	Aramid fibre, NBR binder	General service: water, steam, oils, fuels and gases
KLINGERSIL C-4324, C-4430	Synthetic fibre, NBR binder	Water, steam, oils and gases; grade checked against the pT diagram for the duty
KLINGERSIL C-4500	Carbon fibre, NBR binder	Hot oil, heat transfer fluids and alkaline media
top-graph 2000	Graphite fibre, NBR binder	High temperature service with good sealing under lower bolt loads
Quantum	Fibre sheet, HNBR binder	High temperature service where NBR-bound sheets age too fast
top-chem 2000, 2003, 2005	Filled PTFE	Acids, alkalis, solvents and other aggressive chemicals

The gasket grade is chosen from the medium, the temperature, the pressure and the flange. Fibre sheets with an NBR binder cover most utility and hydrocarbon service. HNBR and graphite grades move the temperature limit up. Filled PTFE sheets handle strong chemicals, with the filler (silicon carbide, glass microspheres or another acid-resistant filler) setting creep resistance and chemical range. Thinner gaskets generally seal better under the same bolt load.

Where KLINGER gaskets are used

In Oman and the GCC, KLINGER sheets and cut gaskets seal flanges in refineries, gas plants, petrochemical and fertiliser plants, power and desalination stations, and steam and water systems in industry and buildings.

Ordering KLINGER sheets and gaskets: what we need

Send the grade, thickness (for example 1.5, 2 or 3 mm) and sheet size, or for cut gaskets the flange standard, size and pressure class. For a new duty, send the medium, the temperature and the pressure so the grade can be checked against KLINGER's pT diagram.

Facts checked against KLINGER company history, October 2026.

Browse Klinger products by category: Pipes & Fittings.

FAQ

Questions about the Klinger top-chem 2006 Alkali-Resistant PTFE Gasket

Answers from our engineering team on installation, compatibility and integration.

01What is top-chem 2006 filled with?

Barium sulfate in PTFE, white and free from pigments according to Klinger.

02Which media is it recommended for?

Strongly alkaline applications; the product page says mainly alkaline media.

03How did it perform in 33 percent NaOH?

1 % thickness and 1 % weight increase after 72 h at 110 C, per the datasheet.

04Which approvals are printed?

Oxygen-tested, DIN-DVGW, DNV, TA-Luft, FDA conformity of components and VDI 2200 blowout.

05What is the density?

3.0 g/cm3, the highest among the top-chem grades.