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Klingersil Sheet Material C4430 Gasket
QS Gasket: Klingersil Sheet Material C4430 Gasket
Name: Klingersil Sheet Material C4430 Gasket
Standard: ASME B16.5
Material: Klingersil C4430
Compound: with Aramid Fiber Reinforced with a Nitrile Binder
Size: 6 Inch
Pressure: 150LB
Complete Set: with G10 Sleeve and Washers and ZPS
Standard: ASME B16.5
Material: Klingersil C4430
Compound: with Aramid Fiber Reinforced with a Nitrile Binder
Size: 6 Inch
Pressure: 150LB
Complete Set: with G10 Sleeve and Washers and ZPS
Quantity
Klingersil Sheet Material C4430 Gasket is compressed from aramid-fibre-reinforced nitrile rubber, suits ASME B16.5 flanges, resists oil, steam and chemicals, gives ≥40 % compression-recovery and ≤0.1 ml/min leakage; delivered as a set with G10 insulating sleeves, insulating washers and ZPS metal spacers, it delivers both electrical isolation and sealing in one on-site operation—the reliable, energy-saving choice for refinery, chemical and FPSO flange joints.
In the gasket world A, B, C, D, E and F are not random letters of the alphabet but codes for different “skeleton” spiral-wound constructions; the skeleton fixes the facing match, pressure rating and installation method.
Whenever a service demands both electrical isolation and oil-/steam-resistance, Klingersil Sheet Material C4430 Gasket can be chosen first: its aramid/nitrile composite keeps leakage ≤0.1 ml/min up to 550 °C and the built-in G10 isolating kit lets it drop straight in to replace a traditional metal spiral-wound gasket.
1. Style A (basic)
Only the “metal strip + filler” winding body, no inner or outer ring. Thin and most sensitive in compression-recovery; mates exclusively with tongue-and-groove (TG) flanges, e.g. a 3.2 mm thick gasket in a 4 mm deep groove on a hydrogen-reactor man-way, located by the groove walls, rated 25 MPa / 550 °C—but the groove must be precision-machined or the gasket will extrude.
Only the “metal strip + filler” winding body, no inner or outer ring. Thin and most sensitive in compression-recovery; mates exclusively with tongue-and-groove (TG) flanges, e.g. a 3.2 mm thick gasket in a 4 mm deep groove on a hydrogen-reactor man-way, located by the groove walls, rated 25 MPa / 550 °C—but the groove must be precision-machined or the gasket will extrude.
If groove accuracy is poor, switch to a 1.5 mm thick blank-cut Klingersil Sheet Material C4430 Gasket of Style A; it gives the same seal without needing a metal groove for location.
2. Style B (with inner ring)
A 3 mm thick SS304 ring is added inside Style A for male-and-female (MFM) flanges. The ring blocks the annular space, stops solid hold-up and radial blow-by; typical service: FCC main-fractionator reflux line, 6 MPa / 380 °C hydrocarbon vapour. The ring also acts as a compression stop to prevent over-crushing of graphite filler.
A 3 mm thick SS304 ring is added inside Style A for male-and-female (MFM) flanges. The ring blocks the annular space, stops solid hold-up and radial blow-by; typical service: FCC main-fractionator reflux line, 6 MPa / 380 °C hydrocarbon vapour. The ring also acts as a compression stop to prevent over-crushing of graphite filler.
For an insulating reflux line the ring can be changed to a G10 sleeve and the sealing face to Klingersil Sheet Material C4430 Gasket, keeping Style B’s anti-blow-by feature while stopping galvanic corrosion.
3. Style C (with outer ring)
A 4 mm thick “centering ring” of the same steel grade as the flange is placed outside the body. It does not touch the fluid, serving only for assembly location and compression limit; used on raised-face (RF) flanges at PN ≤ 6.3 MPa. A city-gate filter-separator DN300, PN25 usually takes Style C 304 + graphite; the ring’s OD is slightly smaller than the bolt-pitch circle—hang it and it is centred, cutting maintenance time.
A 4 mm thick “centering ring” of the same steel grade as the flange is placed outside the body. It does not touch the fluid, serving only for assembly location and compression limit; used on raised-face (RF) flanges at PN ≤ 6.3 MPa. A city-gate filter-separator DN300, PN25 usually takes Style C 304 + graphite; the ring’s OD is slightly smaller than the bolt-pitch circle—hang it and it is centred, cutting maintenance time.
Where fire-safe isolation is needed the sealing element can be swapped for Klingersil Sheet Material C4430 Gasket while keeping the carbon-steel centering ring, easily passing API 6FA fire tests.
4. Style D (inner + outer rings)
The “full-dress” B + C combination: inner ring guards the medium, outer ring centres and limits compression—the first choice for high-pressure RF. An offshore 6 inch Class 900 water-injection line, RF flange, 15.3 MPa / 120 °C, uses Style D 316L + graphite; the two rings lock gasket compression at 0.25 mm, leakage <1 ml/min.
The “full-dress” B + C combination: inner ring guards the medium, outer ring centres and limits compression—the first choice for high-pressure RF. An offshore 6 inch Class 900 water-injection line, RF flange, 15.3 MPa / 120 °C, uses Style D 316L + graphite; the two rings lock gasket compression at 0.25 mm, leakage <1 ml/min.
If the water contains corrosion inhibitor and needs electrical isolation, switch the sealing ring to Klingersil Sheet Material C4430 Gasket, make the inner ring of G10 and keep the 316L outer ring for location; system insulation resistance ≥100 MΩ while still meeting ASME B16.5 high-pressure class.
5. Style E (full-face with bolt holes)
Not a ring but a full disc drilled with every bolt hole, dedicated to flat-face insulating sets. Example: FRP to CS flange at a power-plant FGD tower outlet uses 5 mm epoxy-glass Style E, breaking galvanic corrosion and giving seal; bolts pass straight through, quick to align, for PN10, mildly corrosive, low-vacuum duty.
Not a ring but a full disc drilled with every bolt hole, dedicated to flat-face insulating sets. Example: FRP to CS flange at a power-plant FGD tower outlet uses 5 mm epoxy-glass Style E, breaking galvanic corrosion and giving seal; bolts pass straight through, quick to align, for PN10, mildly corrosive, low-vacuum duty.
When tower outlet temperature >150 °C epoxy-glass ages; upgrade to 3 mm perforated Klingersil Sheet Material C4430 Gasket, rated 400 °C, still keeping the through-bolt design and tripling life.
6. Style F (grooved C-shape elastomer)
Cross-section is a “C” that snaps into a pipe-end groove, sealing by radial compression on the OD; used in grooved mechanical couplings. A high-rise sprinkler DN80 rigid grooved joint uses EPDM Style F, one joint in 3 min, allows 0.5° pipe deflection without leak, seismic performance better than flange.
Cross-section is a “C” that snaps into a pipe-end groove, sealing by radial compression on the OD; used in grooved mechanical couplings. A high-rise sprinkler DN80 rigid grooved joint uses EPDM Style F, one joint in 3 min, allows 0.5° pipe deflection without leak, seismic performance better than flange.
If glycol antifreeze is added to the fire-water EPDM swells; change the C-ring to a moulded Klingersil Sheet Material C4430 Gasket, chemical resistance rises five-fold, elasticity kept down to –50 °C, meeting UL 213 fire approval.
One-sentence wrap-up:
A for TG, B for MFM, C saves cost on low-pressure RF, D secures high-pressure RF, E gives full-face insulation cover, F clicks into a groove; whichever letter the duty book shows, when the medium asks for seal + isolation + oil resistance, Klingersil Sheet Material C4430 Gasket can step in at once and keep the seal inside the circle.
A for TG, B for MFM, C saves cost on low-pressure RF, D secures high-pressure RF, E gives full-face insulation cover, F clicks into a groove; whichever letter the duty book shows, when the medium asks for seal + isolation + oil resistance, Klingersil Sheet Material C4430 Gasket can step in at once and keep the seal inside the circle.
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