With around 250 locations and 90 serve centers, we are represented in the most important economic regions of the world. The advantages are clear: short paths to our customers, fast response times and a shared language.
Statotherm V cover seals V901 (self-sealing) are precision-made seals made from permanently elastic, expanded graphite (purity ≥ 99%) without binders or fillers. Cover seals are successfully used as self-sealing closures in high pressure valves, e.g. for power stations at high temperatures and up to 1,000 mm diameter.
Advantages
Easy to assemble and disassemble
No damage to the sealing surfaces
Long service life
Do not harden
Optimized sealing result
Minimum wear of the contact surface
Operating range
Pressure: p = 500 bar
Sliding velocity: vg = 2 m/s
Temperature
Continuous operation:
t = -200 °C … +500 °C
Steam: tmax+550°
Recommended surface roughness:
RZ = 10 - 40 μm
Chemical resistance: pH = 0 … 14
Resistant to almost all organic and inorganic acids, alkalis, oils and solvents.
Density (raw material): 0.7 or 1.0 g/cm3
V901/B5: density 1.3 g/cm3
V901/B6: density 1.4 g/cm3
V901/B7: density 1.6 g/cm3
V901/B8: density 1.8 g/cm3
Recommended applications
Industries
Process industry
Petrochemical industry
Chemical industry
Power plant technology
Building services industry
Valves
Variants
Rectangular profile (without, or with one or with two end caps):
V901/R7, V901R7K, V901RKK, V901RWK
Outer chamfer (without, with one or with two caps):
V901/A7, V901A7K, V901AKK
Inner chamfer (without, with one or with two caps):
V901/I7, V901I7K, V901I
For applications in nuclear power plants, with a graphite purity > 99,85%:
V901/7N
Notes
Design and ordering information
The design of the cover seal depends on the pressure and dimensions. Please specify the operating conditions and profile shape with any enquiries or orders (example: pressure in bar, diameter d1 and d2, profile shape I, A or R).
Forms of supply
Die-pressed rings, to drawing, measurements or other agreement
Similar products
Statotherm R profile rings R901/B..
Statotherm R profile rings R901/B are made from permanently elastic, expanded graphite (purity ≥ 99.85%, ash content ≤0.15 %, chloride content ≤20 ppm) without binders or fillers. Statotherm R profile rings R901/B are almost maintenance-free and are intended for exposure to extreme temperature cycling and/ or high or low temperature ranges which cannot be withstood by elastomeric O-rings.
Statotherm V cover seals V881 (self-sealing) consist of pure graphite rings (purity > 99%) with an embedded stainless steel reinforcement. They are used in particular in applications with large gaps and high pressures. For example, Statotherm V cover seals V881 are used successfully in power stations at high temperatures and with diameters of up to 1,000 mm.