KLINGER® GRAPHITE LAMINATE PSM

KLINGER® GRAPHITE LAMINATE PSM

KLINGER® GRAPHITE LAMINATE PSM is a high-performance graphite sealing with perforated stainless steel insert, providing excellent sealing and mechanical resistance. The material is free from adhesives, resins, and impregnations, eliminating the risk of toxicity and ensuring stable properties across the full range of operating temperatures.

Material

• expanded graphite with purity ≥ 99%
• perforated insert of stainless steel 1.4401 (or optionally 1.4404)
• no resins, adhesives, and impregnations

Applications

• sealing at high temperatures and pressures
• hot water and steam up to 450°C
• chemicals and process media in chemical, petrochemical, and energy industries

Physical Parameters

• density of graphite layer: 1.0 g/cm³
• chloride content: ≤ 40 ppm
• leakage rate (DIN 28090-2): < 0.06 mg/s x m
• compressibility (ASTM F 36 A): 40 - 50%
• recovery (ASTM F 36 A): 10 - 15%
• residual stresses (DIN 52913, 16 h / 50 MPa / 300°C): ≥ 45 MPa

Thermal Resistance

• continuous operating temperature: 350°C
• thickness loss at 23°C: 42 - 48%
• thickness loss at 300°C: 2 - 4%
• thermogravimetric analysis (TGA) according to DIN 28090-2: < 4 %/h at 670°C

Dimensions and Tolerances

• standard sheet sizes: 1000 x 1000 mm, 2000 x 1000 mm, 1500 x 1500 mm
• available thicknesses: 0.8 mm, 1.0 mm, 1.5 mm, 2.0 mm, 3.0 mm
• thickness tolerance: ±5%
• length and width tolerance: ±4 mm

Certificates and Approvals

• BAM tested
• Fire-Safe according to DIN EN ISO 10497
• DIN-DVGW

KLINGER® GRAPHITE LAMINATE PSM is a sealing solution with excellent chemical and thermal resistance, ensuring long-term reliability even in extreme operating conditions.

Technical Specification - KLINGER® GRAPHITE LAMINATE PSM

Below is the professional technical specification of graphite layers for thicknesses 1.0 mm, 1.5 mm, and 2.0 mm:

Scope and Application
This specification defines the technical requirements for graphite layers used in applications requiring high purity, specified mechanical properties, and appropriate metal reinforcement. The document covers three thickness variants: 1.0 mm, 1.5 mm, and 2.0 mm.

Material Properties

Density of Graphite Layer

• Measurement Method: DIN 28090-2
• Value: 1.0 g/cm³ (for all variants)

Purity of Graphite

• Measurement Method: DIN 51903
• Value: ≥ 99.0%
• Note: For nuclear applications, a version with purity ≥ 99.8% is available on request.

Chloride Content in Graphite Layer

• Measurement Method: DIN 28090-2
• Value: ≤ 40 ppm

Metal Reinforcement

• Type: Perforated metal insert
• Characteristics:
  • Insert Thickness: 0.10 mm (according to standards 1.4401 or 1.4404)
  • Number of Layers: 1
• Application: Provides additional structural support for all thickness variants.

Mechanical Properties

Compressibility (ASTM F 36 A)

• Value Range [%]:
  • 1.0 mm: 25 - 35%
  • 1.5 mm: 30 - 40%
  • 2.0 mm: 35 - 45%

Recovery (ASTM F 36 A)

• Value Range [%]:
  • 1.0 mm and 1.5 mm: 15 - 20%
  • 2.0 mm: 12 - 18%

Residual Stresses (DIN 52913)

• Conditions: 16 h / 50 MPa / 300 °C
• Value: ≥ 46 MPa

Strength according to Klingera's method

• Value: 50 MPa

Thickness Loss
Specified for both room temperature and high-temperature conditions:

• At 23 °C (room temperature):

  • 1.0 mm: 30 - 40%
  • 1.5 mm: 35 - 45%
  • 2.0 mm: 35 - 45%

• At 300 °C:

  • Value for all variants: 1 - 3%

Gas Permeability

• Measurement Method: DIN 28090-2
• Value:
  • 1.0 mm: < 0.06 mg/s·m
  • 1.5 mm and 2.0 mm: < 0.10 mg/s·m

Additional Notes

• Graphite Quality: Standard purity is ≥ 99.0%, but for applications requiring the highest quality (e.g., nuclear), a version with purity ≥ 99.8% is available on request.
• Technical Documentation: Detailed specification of the graphite used is available in the Graphite Vademecum, which can be provided upon request.