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KLINGERSIL Dielectric Flange Gasket
QS Gasket: KLINGERSIL Dielectric Flange Gasket
Name: KLINGERSIL Dielectric Flange Gasket
Standard: ASME B16.5
Material: Klingersil C4400
Max Temperature: 400℃
Size: 4 Inch
Pressure: 150LB
Complete Set: with G10 Sleeve and Washers and ZPS
Compound: with Aramid Fiber Reinforced with a Nitrile Binder
Standard: ASME B16.5
Material: Klingersil C4400
Max Temperature: 400℃
Size: 4 Inch
Pressure: 150LB
Complete Set: with G10 Sleeve and Washers and ZPS
Compound: with Aramid Fiber Reinforced with a Nitrile Binder
Quantity
KLINGERSIL Dielectric Flange Gasket, 4"150LB is made of imported Klingersil C4400 non-asbestos sheet, a composite of aramid fibre plus NBR rubber, rated for 400 °C and electrical insulation ≥40 kV/mm. Supplied together with G10 insulating sleeves, washers and ZPS metal overlay, it meets ASME B16.5 and solves the three main pain-points—corrosion, current leakage and thermal-cycling loosening—in one shot, making it the safety-first choice for chlor-alkali plants, offshore platforms and high-voltage VSD piping.
What are the characteristics of the KLINGERSIL C4400 insulating gasket?
The core characteristics of KLINGERSIL Dielectric Flange Gasket can be summarised in six points:
The core characteristics of KLINGERSIL Dielectric Flange Gasket can be summarised in six points:
1. Asbestos-free, eco-friendly formula
Aramid fibre + nitrile-butadiene rubber (NBR) rolled under high pressure, complies with asbestos-substitute regulations and is TA-Luft clean-air certified.
Aramid fibre + nitrile-butadiene rubber (NBR) rolled under high pressure, complies with asbestos-substitute regulations and is TA-Luft clean-air certified.
2. Wide temperature & pressure range
Continuous service –100 °C to +400 °C, short-term peak 400 °C; maximum seal pressure 100 bar (10 MPa), compression 11 %, recovery ≥55 %, torque loss <20 % under thermal cycling.
Continuous service –100 °C to +400 °C, short-term peak 400 °C; maximum seal pressure 100 bar (10 MPa), compression 11 %, recovery ≥55 %, torque loss <20 % under thermal cycling.
3. Excellent electrical insulation
Volume resistivity 10¹³ Ω·cm, breakdown voltage ≥40 kV/mm; KLINGERSIL Dielectric Flange Gasket can be used directly in 150 LB and 300 LB dielectric-isolation kits to prevent galvanic corrosion.
Volume resistivity 10¹³ Ω·cm, breakdown voltage ≥40 kV/mm; KLINGERSIL Dielectric Flange Gasket can be used directly in 150 LB and 300 LB dielectric-isolation kits to prevent galvanic corrosion.
4. Broad chemical compatibility
Resists water, steam, oils, fuels, alcohols, refrigerants and medium-strength acids/alkalis; gas leakage rate only 0.2 ml/min (DIN 3535/6), meeting VOC fugitive-emission controls.
Resists water, steam, oils, fuels, alcohols, refrigerants and medium-strength acids/alkalis; gas leakage rate only 0.2 ml/min (DIN 3535/6), meeting VOC fugitive-emission controls.
5. Double-sided anti-stick 3XA coating
No adhesion to flanges, zero damage on disassembly, no sealant needed, cuts maintenance time by >30 %.
No adhesion to flanges, zero damage on disassembly, no sealant needed, cuts maintenance time by >30 %.
6. Dimensionally stable & easy to fabricate
Thickness tolerance ±0.05 mm, can be die-cut into any shape; sheet size 1500 × 2000 mm, 0.8-3 mm
Thickness tolerance ±0.05 mm, can be die-cut into any shape; sheet size 1500 × 2000 mm, 0.8-3 mm
Therefore KLINGERSIL Dielectric Flange Gasket combines “high-temperature sealing + electrical insulation + chemical protection” in one sheet, making it the ideal insulating gasket for petrochemical, power, marine and new-energy pipeline flanges.
What does the cost of KLINGERSIL C4400 insulating gasket consist of?
The “cost” of KLINGERSIL Dielectric Flange Gasket can be broken into five major blocks, covering both the material itself and the full chain of turning “sheet” into “usable gasket”:
The “cost” of KLINGERSIL Dielectric Flange Gasket can be broken into five major blocks, covering both the material itself and the full chain of turning “sheet” into “usable gasket”:
1. Raw-material cost (≈50 %)
a) Aramid fibre: governs strength & temperature, high-grade para-aramid ≈30 USD/kg;
b) NBR binder: oil & alkali resistant, price tracks butadiene/acrylonitrile, ≈2.2–2.8 USD/kg;
c) Mineral fillers & aids: barite, kaolin, curing agents, 15 wt %, 0.4–0.6 USD/kg;
d) 3XA double anti-stick coating: aqueous PTFE system, 3 g/m² per side, ≈0.25 USD/m².
→ Theoretical sheet cost ≈4.5–5.2 USD/kg (density 1.6 g/cm³ → ≈7.2–8.3 USD/m²).
a) Aramid fibre: governs strength & temperature, high-grade para-aramid ≈30 USD/kg;
b) NBR binder: oil & alkali resistant, price tracks butadiene/acrylonitrile, ≈2.2–2.8 USD/kg;
c) Mineral fillers & aids: barite, kaolin, curing agents, 15 wt %, 0.4–0.6 USD/kg;
d) 3XA double anti-stick coating: aqueous PTFE system, 3 g/m² per side, ≈0.25 USD/m².
→ Theoretical sheet cost ≈4.5–5.2 USD/kg (density 1.6 g/cm³ → ≈7.2–8.3 USD/m²).
2. Manufacturing expense (≈18 %)
Wet-laid web, continuous double-steel-belt hot-press, vulcanisation, stress-relief, cooling, edge-trimming—total line energy 1.8–2.0 kWh/m², plus labour & depreciation, ≈1.1 USD/m².
Wet-laid web, continuous double-steel-belt hot-press, vulcanisation, stress-relief, cooling, edge-trimming—total line energy 1.8–2.0 kWh/m², plus labour & depreciation, ≈1.1 USD/m².
3. Inspection & certification amortisation (≈7 %)
Annual TA-Luft, BAM, WRAS, DNV, GL and third-party test fees, spread over volume, ≈0.4 USD/m².
Annual TA-Luft, BAM, WRAS, DNV, GL and third-party test fees, spread over volume, ≈0.4 USD/m².
4. Distribution markup (≈15 %)
Austria plant → China CIF (ocean freight + 6.5 % import duty + 13 % VAT) + regional stock; distributors usually quote ≈2000 CNY/kg (≈280 USD/kg), already including 12–15 % channel margin.
Austria plant → China CIF (ocean freight + 6.5 % import duty + 13 % VAT) + regional stock; distributors usually quote ≈2000 CNY/kg (≈280 USD/kg), already including 12–15 % channel margin.
5. Finished-part & kit cost (≥10 %)
Die-cutting sheet into DN100 150 LB isolation kit (1 C4400 gasket + 2 G10 sleeves + 2 G10 washers + ZPS SS overlay):
- Cutting scrap 8 %;
- G10 epoxy sleeve ≈0.35 USD/pc;
- washer ≈0.12 USD/pc;
- labour & QC ≈0.20 USD/set.
Die-cutting sheet into DN100 150 LB isolation kit (1 C4400 gasket + 2 G10 sleeves + 2 G10 washers + ZPS SS overlay):
- Cutting scrap 8 %;
- G10 epoxy sleeve ≈0.35 USD/pc;
- washer ≈0.12 USD/pc;
- labour & QC ≈0.20 USD/set.
Result: one 4"150 LB dielectric isolation kit sells for 18–22 USD, of which the KLINGERSIL Dielectric Flange Gasket itself accounts for ≈6–7 USD; the rest is machining, insulating accessories and margin.
Summary
If you buy only sheet, factory cost of KLINGERSIL Dielectric Flange Gasket ≈6 USD/m², market price 2000 CNY/kg (≈14–15 USD/m²);
If you buy the “insulation kit”, the cost structure becomes “material 50 % + machining/accessories 25 % + certs/channel 25 %”, with end prices ranging 15–50 USD/set depending on size.
If you buy only sheet, factory cost of KLINGERSIL Dielectric Flange Gasket ≈6 USD/m², market price 2000 CNY/kg (≈14–15 USD/m²);
If you buy the “insulation kit”, the cost structure becomes “material 50 % + machining/accessories 25 % + certs/channel 25 %”, with end prices ranging 15–50 USD/set depending on size.
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