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Klinger® Gaskets > Gasket materials / PTFE Products > KLINGERSIL range > KLINGERSIL C-4500 - Technical data

  Gasket materials / PTFE Products
Technical data
High pressure gasket for special applications. Suitable for use with strong alkali medias and steam at
higher temperatures as well as to oils, gases, salt solutions, fuels, alcohols, organic and inorganic acids,
hydrocarbons, lubricants and refrigerants. Premium material grade with very high stress retention.
Typical values
Compressibility ASTM F 36 J % 12
Recovery ASTM F 36 J min % 60
Stress relaxation DIN 52913 50 MPa, 16h/175°C MPa 35
50 MPa, 16h/300°C MPa 32
Stress relaxation BS 7531 40 MPa, 16h/300°C MPa 30
Klinger cold/hot compression thickness decrease at 23°C % 10
50 MPa thickness decrease at 300°C % 15
Tightness according DIN 3535/6 mg/s x m < 0.1
Tightness class L DIN 28090-1 0.1
Specific leakrate λ VDI 2440 mbar x l/s x m 4.94E-06
Cold compression DIN 28091-2 % 7 - 11
Cold recovery DIN 28091-2 % 3 - 5
Hot compression DIN 28091-2 % 9
Hot recovery DIN 28091-2 % 1
Spring back R DIN 28091-2 mm 0.019
Thickness increase after fluid oil JRM 903: 5 h/150°C % 3
immersion ASTM F 146 fuel B: 5 h/23°C % 5
Density g/cm3 1.4
Average surface resistance ROA Ω 5.7x10E4
Average specific volume resistance ρD Ω cm 7.5x10E4
Average dielectric strength kV/mm < 0.1
Average power factor 1kHz, ca.3 mm thickness tan δ 0.147
Average dielectric coefficient 1kHz, ca.3 mm thickness εr 9.7
Thermal conductivity W/mK 0.2
ASME-Code sealing factors
for gasket thickness 2,0 mm tightness class 0.1 mg/s x m MPa y 25
m 4
Dimensions of the standard sheets
1000 x 1500 mm,2000 x 1500 mm.
0.5 mm, 1.0 mm, 1.5 mm, 2.0 mm, 3.0 mm; other thicknesses and sizes on request.
thickness ± 10%, length ± 50 mm, width ± 50mm
KLINGERSIL® gasket materials are generally furnished with surfaces of low adhesion. On request, graphite
facings and other surface finishes on one or both sides are also available.
Function and durability
The performance and service life of KLINGER gaskets depend in large measure 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 observe our installation instructions.
Tests and approvals
Fire safe according API SPEC 6 FA. BAM approval in accordance with UVV 28, oxygen( VGB 62)
tested up to 100 bar and 85° C. Approved for gas supply in accordance with DIN 3535/6.
DIN - DVGW permit NG 5123AN0539. ÖVGW permit, KTW recommended Lab. National d`Essais 105.097
Germanischer Lloyd. BS 7531 Grade X. TA Luft ( Clean air ) approval, tested in accordance with VDI 2440 at 250° C.