VALQUATIGHT GASKET
Spiral Wound Gaskets use Non-Asbestos inorganic paper, VALQUAFOIL™ (expanded graphite) and VALFLON™ (PTFE) tape as filler materials, and exhibit good elasticity by means of a V-shaped hoop.
![no image](https://www.seal.valqua.co.jp/en/wp-content/themes/valqua/images/photo/6591VC.jpg)
- VALQUA No.
- 6591VC
- Product name
- BLACKTIGHT(with outer ring) for cryogenic application
- Features1
- Gasket for cryogenic application has excellent sealability at even low gasket stress as making 6590 series more flexible.
- Features2
- Version of Spiral wound gasket using VALQUAFOIL tape applied as filler material with outer ring
- Features3
- The circumferance of the outer ring of a gasket with an outer ring inscribes the bolt of the flange, making gasket centering easy. This ring is also useful as a guide for adjusting the amount of reinforcement and tightening of the gasket. For use with a raised face flange, No. 6596 (with inner and outer rings) is recommended, as deformation of the inner diameter of the gasket is possible.
- Features4
- This gasket possesses an excellent sealability under cryogenic conditions such as LNG.
- Features5
- A process has adopted that can seal even under low gasket stress.
- 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
- oxygen
- Application
- These are suitable gaskets to be used for applications where very low temperature fluids such as LNG, liquid nitrogen and liquid hydrogen and that requires sealing property at low tightening forces.