VALQUA No.6590
http://www.seal.valqua.co.jp/en/valquatight/6590/

Features1

Spiral wound gasket using VALQUAFOIL 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.