LATTYgraf HPML

LATTYgraf HPML is a high-carbon expanded graphite sheet reinforced with multiple stainless steel foils and an oxidation inhibitor, engineered for demanding sealing assemblies.

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Manufacturer Documentation

Our Quebec facility manufactures custom-cut flat gaskets to your exact specifications. VAMECA can also evaluate the supply of this part number or engineer a suitable replacement.

AT A GLANCE

Multi-layer graphite

Product Family

Graphite

Material Composition

Expanded Graphite >99% C

TECHNICAL SPECIFICATIONS

Material Specifications

Maximum temperature and pressure limits cannot be applied simultaneously.

TEMPERATURE

Min. -210 °C · Standard Catalog Max. 650 °C

PRESSURE

650 bar (catalogue maximum, verify according to P/T rating)

THICKNESSES

Thickness specifications not available in reference documentation

Applications and Key Features

LATTY specifies seals and gaskets for pipe flanges, valve bodies and bonnets, covers, and manholes across water, steam, gas, and hydrocarbon applications.

Published Testing and Approvals

Standards, Testing, and Certification References

Testing and approvals certified by LATTY: API 6FB, DVGW, and oxygen service.

PART NUMBER ANALYSIS

To properly select or replace this material

Construction and Key Features

Multiple inserts enhance the mechanical strength of the graphite sheet, facilitating cutting and handling. The oxidation inhibitor is an additional element of the formulation.

Selecting the Right Grade

Evaluate the thermal service type, blowout resistance, and flange bolt-up properties. Any stated approval must be matched to the exact certificate and its specific scope.

To compare constructions: LATTYgraf HPML NUC and TEADIT GR 1700. The number of layers, metal foil insertions, and oxidation protection must be evaluated.

Construction and Key Features

Multiple inserts enhance the mechanical strength of the graphite sheet, facilitating cutting and handling. The oxidation inhibitor is an additional element of the formulation.

Selecting the Right Grade

Evaluate the thermal service type, blowout resistance, and flange bolt-up properties. Any stated approval must be matched to the exact certificate and its specific scope.

To compare constructions: LATTYgraf HPML NUC and TEADIT GR 1700. The number of layers, metal foil insertions, and oxidation protection must be evaluated.

REPLACEMENT TO BE EVALUATED

Compare designs and alternatives

KEY COMPARISON CRITERIA

The multilayer structure of HPML sets it apart from single-insert graphite sheet materials such as LATTYgraf EFI or EFA.

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Part Number: LATTYgraf HPML

Please provide the part number, thickness, dimensions, quantity, and process fluid. We will review material availability for the specified grade, custom cutting at our Quebec facility, or an engineered alternative tailored to your assembly.

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View official documentation

The manufacturer's latest datasheets, certifications, and P/T curves must be reviewed prior to ordering or substitution.

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RELATED PART NUMBERS

Compare Related Designs

Multi-layer graphite with stainless steel reinforcement. The nuclear qualifications of HPML NUC do not apply to other materials. Associated reference constructions: LATTYgraf HPML NUC (multi-layer graphite), TEADIT GR 1700 (multi-layer reinforced expanded graphite), and GRAPH-LOCK 3128 (multi-layer graphite).

REFERENCE SHEET

LATTY