여기에

The spiral wound gasket is a type of semi-metallic
gasket, rationally designed to provide a high performance in use at high temperature and pressure. It is equipped with an ample compressibility and an increased demand has been seen in these years because of the merit that a gasket seating stress can be controlled by an optimum compression thickness. It is widely used at process line and lines handling heating medium in oil refineries and petrochemical plants as well as steam processing lines in thermal power stations, atomic power stations and vessels of steam turbine engines. It is made of V-preformed thin metal strip and a selected filler material which are tightly and spirally wound together with only metal strip wound in several folds and spot-welded at the beginning and the end of winding.



- The gasket to flange design rating permits easy product selection and handing
- The gasket can be used for a wide pressure range.
- Stable sealing characteristics of high integrity can be maintained for an extended period of time in the absence of leakage due to permeability
- The gasket seating stress is balanced across its surface to alleviate problems from uneven tightening, insufficient or over tightening of the gasket.
- Freedom from the creation of excessive stress in the gasket ensures longer service life.
- Stable sealing from the gasket is ensured even under stringent operating conditions involving heat cycling, vibration and bending moments.
- The tightening criterion for the gasket is see it is compressed to the thickness of the outer ring. Thus all personal variation in tightening force can eliminated, giving easy installation.