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KLINGER Maxiflex Spiral Wound Gaskets
KLINGER Maxiflex spiral wound gaskets pair a specially profiled, spring-like metallic winding strip with a softer filler — graphite, PTFE or mica — wound in alternating plies. Under compression the filler densifies and flows into flange imperfections while the V-profile metal strip acts as a spring, so the gasket recovers under fluctuating loads from pressure and temperature cycling, flange rotation, bolt relaxation and creep.
Manufactured to ASME B16.20 on computer-controlled winding machines, Maxiflex gaskets deliver a very tight, reliable seal at high pressures and temperatures, suit standard and custom flange designs, and remain easy to handle and install. Common configurations include Type CR (outer ring), Type RIR (inner ring), Type CRIR (inner and outer rings), Type R, Type R Graflex faced and Type HTX for heat exchangers.
Filler choice sets the service envelope: graphite for steam, oils and hydrocarbons to 500°C; PTFE where chemical resistance is paramount (to 260°C); and mica for extreme temperatures up to 1000°C. A wide range of winding and ring materials — from stainless grades through Monel, Inconel and Hastelloy to titanium — covers virtually any duty.
- High pressure and high temperature flanges
- Steam, oil and hydrocarbons (graphite filled)
- Aggressive chemical duties (PTFE filled)
- Extreme temperatures to 1000°C (mica filled)
- Vessels, valves, pumps and heat exchangers
- Fire-safe critical services
- Construction: V-profile metallic winding strip with alternating soft filler plies
- Filler options: graphite (to 500°C), PTFE (to 260°C), mica (to 1000°C), mica/graphite (to 900°C)
- Winding and ring materials: 304/304L, 316/316L, duplex, 347SS, 321SS, Monel 400, Nickel 200, titanium, Inconel, Incoloy, Hastelloy, super duplex, Alloy 20, 254 SMO, zirconium, carbon steel
- Configurations: Type CR, RIR, CRIR, R, R Graflex faced, HTX
- Standard sealing element thicknesses: 3.2 / 4.5 / 6.4 / 7.2 mm (measured to the metallic windings)
- Gasket factors: M = 3, Y = 69 MPa (ASME flange design values)
- Graphite filled: maximum temperature 500°C, maximum pressure >400 bar
- PTFE filled: maximum temperature 260°C, maximum pressure >100 bar (inner ring required)
- Mica filled: maximum temperature 1000°C, maximum pressure >100 bar
- Recommended flange surface finish for general duties: 3.2–6.3 µm
- Manufactured to ASME B16.20
- Fire Safe to API 6FB
- Suits flange standards ASME B16.5, DIN, BS 10, JIS, AS2129 and customer designs
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