Klinger KLINGERSIL C-4300 Gasket Sheet

Name: Klinger KLINGERSIL C-4300 Gasket Sheet – Datasheet & Quote
Brand: Klinger
SKU: C-4300

Aramid-NBR sheet for hot water, steam and oil joints

KLINGERSIL C-4300 is an olive-green aramid-fibre and NBR sheet that Klinger sells as a universal high-pressure gasket giving more safety across a wide range of applications. The datasheet names resistance to hot water, steam, oils, hydrocarbons and other chemicals.

The product page lists three features: a general-purpose gasket material, dimensional stability and consistent material composition. Benefits stated are an excellent price and performance ratio and suitability for many different media. Compared with the other sheets in the range it has the highest compressibility, 14 %, so it conforms well to flanges that are not perfectly flat.

Technical specifications

Parameter	Specification
Manufacturer / model	Klinger (Rich. Klinger Dichtungstechnik), KLINGERSIL C-4300
Basis composition	Aramid fibres bonded with NBR
Colour	Olive green
Sheet size	1000 x 1500 mm, 2000 x 1500 mm
Thickness	0.5, 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	DIN-DVGW, DIN 16421 (W 270), Elastomer-Guideline, DNV approval, SVGW approval
Industries listed	General industry, chemical, oil and gas, energy, infrastructure, pulp and paper, marine, automotive, food and beverage
Compressibility, ASTM F 36 J (2.0 mm)	14 %
Recovery, ASTM F 36 J	50 %
Stress relaxation, DIN 52913, 50 MPa, 16 h	32 MPa at 175 °C; 20 MPa at 300 °C
Stress relaxation, BS 7531, 40 MPa, 16 h at 300 °C	23 MPa
Klinger cold/hot compression, 50 MPa, thickness decrease	10 % at 23 °C; 22 % at 300 °C
Tightness, DIN 28090-2	0.03 mg/(s x m)
Thickness increase after immersion, ASTM F 146	5 % (oil IRM 903, 5 h at 150 °C); 10 % (fuel B, 5 h at 23 °C)
Density	1.6 g/cm3
Thermal conductivity	0.39 W/mK
Classification, BS 7531:2006	Grade Y
ASME code sealing factors, 2.0 mm, tightness class 0.1 mg/(s x m)	y 15 MPa, m 3.0
Chemical resistance chart in datasheet	A (small or no attack) for paraffinic hydrocarbon, motor oil, alcohol, water, diluted acid and diluted base; B (weak to moderate attack) for motor fuel and mineral lubricants; C (strong attack) for aromates, chlorinated hydrocarbon fluids, ketone and ester

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

Fitting C-4300 to the duty

Use C-4300 where hot water or steam is mixed with oil or hydrocarbon service and the temperature stays moderate. Its stress relaxation figures are 32 MPa at 175 °C and 20 MPa at 300 °C, with a 22 % thickness loss at 300 °C under 50 MPa; for hotter or longer steam duty C-4430 or C-4500 retain more load.

The m factor of 3.0 and y factor of 15 MPa are the ASME values for a 2.0 mm gasket at tightness class 0.1 mg/(s x m). The approvals printed are DIN-DVGW, DIN 16421 (W 270), the Elastomer-Guideline, DNV and SVGW; there is no oxygen test or fire-safe entry on this datasheet, so specify another grade if the project requires them.

Related KLINGER gasket sheets

The sheets below are the closest relatives of C-4300.

Model	Basis	Colour	Positioning printed by Klinger
KLINGERSIL C-4400	Aramid fibres, NBR	Green	Universal grade; very good resistance to refrigerants
KLINGERSIL C-4324	Synthetic high-performance fibres, NBR	Black or green	General-purpose sheet for liquids and steam at lower pressure and temperature
KLINGERSIL C-4430	Synthetic fibres, NBR	White or green	Outstanding stress relaxation; hot water and higher-temperature steam
KLINGERSIL C-4500	Carbon fibres, heat-resistant additives, NBR	Black	Alkaline media and superheated steam; chemical industry

Documents, ordering details and quotation

Mention the steam or hot-water temperature so that stress retention can be checked against the data above. 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.

Fibre, graphite and PTFE gasket sheets

The Klinger sheets listed here include the aramid fibre KLINGERSIL grades, graphite based top-graph material and the PTFE sheets of the top-chem family. Each official datasheet gives the thickness range, pressure and temperature limits, gasket factors, chemical resistance and the approvals printed by the manufacturer.

Seven Star LLC links the manufacturer document on every product page, so buyers can verify the figures and approvals themselves before they send an inquiry.

Choosing the right sheet

The correct grade depends on the medium, temperature, pressure, flange design and bolt load. Send these details with your request for quotation and we compare them with the published Klinger data before we quote, so the sheet and thickness suit the joint. Sheets can be quoted as whole sheets or as gaskets cut to size.

Frequently Asked Questions