INSEAL Spiral Wound Gaskets are semi metallic products designed for high pressure and temperature applications. A variety of forms of the gasket are available and these can be manufactured in various materials or sizes to suit your requirement.
With over thousands of satisfied customers in India and around the world who have procured INSEAL spiral wound gaskets, we are confident that we can meet all your service requirements.
How they work
The sealing element of the spiral wound gasket consists of a V-shaped metal strip spirally wound in combination with a soft sealing material as a filler. The metal strip provides outstanding resilience, while the flexible sealing filler guarantees excellent sealing.
Due to this combination of materials, the spiral wound gasket is suitable for sealing under severely fluctuating temperature and pressure conditions. Depending on the application the spiral wound gasket can be specified with outer and/or inner rings.
- Spiral Wound Gaskets are suitable for use across a wide range gasket stress range
- Spiral Wound Gaskets can be used to seal fluid pressures up to 400 bar and from cryogenic temperatures up to 1000oC
- Spiral Wound Gaskets are robust and simple to install
- The outer guide ring simplifies assembly and prevents blow-out of gasket
- By combining different winding materials and metals, the gasket can be tailored to suit a wide variety of operating conditions
- The gasket is easy to remove after service and does not cause any damage to the flange faces
How to Order
Please specify the following when ordering Spiral Wound Gaskets.
- Type of Spiral Wound Gasket required
- Standard of the gasket (flange standard)
- Nominal size and pressure class
- Gasket Thickness
- Inner Ring
- Metal winding
- Outer Ring
Hints Of Installation & Maintenance
When installing a Spiral Wound Gasket, check the dimensions of the Gaskets for use between pipe and pressure vessel flanges. The procedure is as follows
Measure ID of flange contact face.
Measure Gasket ID. If Gasket ID is not 1/8″ larger than flange ID, do not use it unless it can be installed perfectly centered.
A Spiral Wound Gasket does not have the same feel as other Metallic or Non-Metallic Gaskets during the bolting-up. It’s different-because it gives a little bit under each bolt as it is tightened. It is therefore important to tighten the bolts in small steps in proper sequence as shown hereunder. Final tightening must be uniform with each bolt pulling same load. This will guarantee a trouble free joint. If not uniform, the joint may leak-particularly after it has been in hot service. Tighten the bolts after 24 hours and again a week later.