Product name
BLACKTIGHT (basic design)
Features1
Spiral wound gasket using Graphite tape applied as filler material
Features2
The basic-shape gasket is used for male-female and tongue and groove flanges, bonnets of valves, as well as covers for pressure vassels, towers, and tanks. It only requires a narrow width, and safe for use under high pressure.
Features3
Excellent airtightness greatly improves sealing performance against gas in general and vacuum.
Features4
Excellent response to heat and pressure cycles reduces the frequency of retightening.
Features5
They also have excellent radiation resistance (products complying nuclear power specifications are available).
Applicable fluids
Water, Sea water, Hot water, Steam, Crude oil, Alcohol, Animal & vegetable oil, Heat transfer oil, General solvent, Weak acid, Weak alkali, Strong oxidizing acid, strong alkali, Air, Nitrogen gas, Inert gas, Exhaust gas, Inflammable gas, Poisonous, Extremely low temperature liquids,
Inappropriate fluid
Oxidizing acids such as hot, concentrated sulfuric acid, concentrated nitric acid and oxygen.
Application
In particular best suited as gaskets for use handling high temperature & high pressure steam (except HTS), as well as very low temperature fluids such as LNG, liquid nitrogen and liquid hydrogen.
Standard Flange
For JIS pipe flanges＝10K、16K、20K、30K、40K、63K For JPI and ANSI pipe flanges＝Classes 150, 300, 400, 600, 900, 1500, 2500 Gaskets complying with other standards such as ASME and MSS are also available. ▼ For non-st
Non-Standard Flange
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Gasket thickness（mm）
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Manufacturing ranges
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1.6(P)
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10〜150
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3.2(T)
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10〜1500
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4.5(V)
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10〜3000
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6.4(W)
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300〜3400
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Products with a gasket thickness of 6.4 mm can be fabricated with the outer diameter of the outer ring of up to 3,500.
In case of products with gasket thickness of 1.6 mm, only the basic type with hoop made of SUS316 are available.
"( )" shows thickness classifications.