We deal with the full range of spiral wound gaskets ranging from 15mm to 3500mm inner diameter, manufactured to international standards like API 601, ASME B16.2, ASME 16.47 A&B series, DIN, BS, JIS etc. Fillers used are Graphite, Asbestos & PTFE. Approved by all major consultants.
Superior quality of our spiral wound gaskets meeting international standards, is achieved by means of imported computer controlled winding machines, which ensure total repeatability in such critical areas as:
- Winding profile
- Tensiong of winding
- Winding pressure
- Number of primary, secondary and tertiary windings
- Number of weld points
- Weld penetration
All of these factors are vital for control of manufacturing spiral wound gaskets for critical service applications.
Design principle
The basic sealing component of every spiral wound gasket is the wound element. The unique profiled metal strip is spirally wound to integrate with the specified sealing element material. To improve the mechanical strength and other sealing characteristics and to comply with international standards, some layers at the beginning and at the end are wound without soft material and spot-welded over the total circumference. Consistency of winding tension combined with the profile of the winding, provide for a superior sealing performance.
This advantage is achieved by special process of feeding preformed metal strip and soft filler material.
This gives the gasket, the required recovery properties at designed bolt load, even at fluctuating operating conditions. Spiral Wound Gaskets are now available as sealing elements and also with inner and/or outer rings.
A major requirement of any gasket is its ability to recover and maintain a constant sealing force under variable loads.
The effect of pressure and temperature fluctuations, together with radial forces, stress relaxation and creep, demand a gasket with adequate flexibility and recovery to maintain a seal even under trying conditions. Spiral Wound Gaskets can meet this requirement adequately.
Seal Maintained Under the most exacting Conditions
- From Cryogenic to + 900°C
- From high vacuum to 400 bar
- Thermal cycling, vibration, mechanical shock, dry gases
Ease of Installation
- Quick and simple to fit
- Do not need grooved or lapped flange face finishes
- Can often be used on flanges where other gaskets have failed
- Will not cause corrosion
- Will not adhere to flange faces when opened, thus minimizing expensive cleaning time.
The Components and construction of Spiral Wound Gaskets, undergo a constant evolution and improvement program to keep pace with the ever increasing demands of industry, in both precision and performance.