PG Spiral

Wound Gaskets

High-performance semi-metallic gaskets engineered for high pressure, high temperature, and critical sealing applications involving thermal cycling, vibration, and aggressive media.

what it does

Reliable Sealing for Extreme Service

PG Spiral Wound Gaskets deliver reliable flange sealing in demanding services where pressure fluctuations, thermal cycling, and mechanical stress require controlled elasticity and structural strength.

High

Pressure
High
Temperature
Thermal

Cycling
Flange Irregularity

Sealing
CoRE FEATURES

Designed for Critical & Cyclic Services

Metal–Filler Composite Construction

Metallic winding provides strength and resilience; soft filler ensures tight sealing.

Elastic Recovery Under Load

Maintains gasket stress during thermal and pressure cycling.

Flange Surface Compensation

Conforms to minor flange irregularities, improving seal reliability.

Corrosion & Media Resistance

Filler selection enables compatibility with corrosive and aggressive process media.

Product information

configured for demanding service

Engineered to maintain sealing integrity under fluctuating loads, aggressive media, and extreme operating conditions ensuring safety, reliability, and extended flange life in critical industrial systems.

Types

PGI Type

Spiral Wound Gaskets with Inner and Outer Ring. Spiral Wound Gaskets with Inner and Outer Ring.

PG Type

Spiral Wound Gaskets with Outer Ring. Provides reliable centering, flange protection, and consistent sealing performance across standard industrial operating conditions.

R Type

Spiral Wound Gaskets without Rings. Suitable for controlled assemblies where flange alignment is assured and operating conditions are stable.

Special Constructions

Engineered Spiral Wound Gaskets for Extreme Service. Custom-designed for extreme pressure & chemical environments requiring enhanced sealing reliability.
Benefits
01

Thermal Strength

Withstands high temperatures and repeated pressure cycling across demanding industrial flange assemblies.

02

Seal Integrity

Spiral wound design maintains compression and sealing reliability under fluctuating loads and vibration.

03

Load Recovery

Metal winding provides elastic recovery, preserving gasket stress during thermal expansion and contraction.

04

Media Resistance

Filler options ensure compatibility with corrosive chemicals, steam, hydrocarbons, and media.

Specifications
Features
Measuring
Notes / Options
Winding Material
Stainless Steel, Carbon Steel, Alloy Steel, Duplex, Nickel Alloys
Selected Based On Media, Pressure, And Corrosion Resistance Requirements
Filler Material
Graphite, PTFE, Ceramic, Mica
Chosen According To Chemical Compatibility And Operating Temperature
Construction Type
With Inner & Outer Ring, With Outer Ring, Ringless Type
Inner Ring Improves Blow-Out Resistance And Protects Flange Bore
Pressure Class
ASME Class 150 To 2500
Suitable For High-Pressure And Critical Service Applications
Temperature Range
Dependent On Filler And Metal Combination
Graphite For High Temperature, PTFE For Chemical Resistance
Application
Pipelines, Heat Exchangers, Pressure Vessels, Refining Units
Designed For Cyclic Service, Vibration, And Thermal Expansion Conditions
Surface Finish Requirement
Ra 3.2 – 6.3 µm (125 – 250 AARH)
Recommended Flange Finish For Optimal Sealing Performance
Manufacturing Range
Standard ASME Sizes Or Custom Per Drawing
Custom Configurations Available For Extreme Service Conditions
Feature:
Winding Material
Measuring:
Stainless Steel, Carbon Steel, Alloy Steel, Duplex, Nickel Alloys
Notes / Options:
Selected Based On Media, Pressure, And Corrosion Resistance Requirements
Feature:
Filler Material
Measuring:
Graphite, PTFE, Ceramic, Mica
Notes / Options:
Chosen According To Chemical Compatibility And Operating Temperature
Feature:
Construction Type
Measuring:
With Inner & Outer Ring, With Outer Ring, Ringless Type
Notes / Options:
Inner Ring Improves Blow-Out Resistance And Protects Flange Bore
Feature:
Pressure Class
Measuring:
ASME Class 150 To 2500
Notes / Options:
Suitable For High-Pressure And Critical Service Applications
Feature:
Temperature Range
Measuring:
Dependent On Filler And Metal Combination
Notes / Options:
Graphite For High Temperature, PTFE For Chemical Resistance
Feature:
Application
Measuring:
Pipelines, Heat Exchangers, Pressure Vessels, Refining Units
Notes / Options:
Designed For Cyclic Service, Vibration, And Thermal Expansion Conditions
Feature:
Surface Finish Requirement
Measuring:
Ra 3.2 – 6.3 µm (125 – 250 AARH)
Notes / Options:
Recommended Flange Finish For Optimal Sealing Performance
Feature:
Manufacturing Range
Measuring:
Standard ASME Sizes Or Custom Per Drawing
Notes / Options:
Custom Configurations Available For Extreme Service Conditions
For full technical details, download the official datasheet.
use cases

Suited for High-Stress Sealing Applications

Ideal for applications requiring controlled gasket elasticity, high sealing reliability, and resistance to mechanical and thermal stress.

Oil &

Gas

Petrochemical
& Refining

Power & Steam
Systems

Chemical
Processing

PG Spiral Wound
Gaskets DATASHEET

For full technical details, construction options, and installation guidance, download the official Spiral Wound Gasket datasheet.

Download PDF