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Fluoroloy® A21

Product catalog summary

Material Overview:
Fluoroloy® A21 is a proprietary custom PTFE material, characterized by its black color and suitability for back-up rings. It performs excellently in steam and water under severe conditions, offering improved creep and extrusion resistance at elevated temperatures. It is similar to Fluoroloy® A16 but with increased hardness and wear resistance.

Features & Benefits:

Excellent performance in steam and water under severe conditions.
Improved creep and extrusion resistance at elevated temperatures.
Increased hardness and wear resistance compared to Fluoroloy® A16.
Working temperature range: -268°C to +316°C (-450°F to +600°F).

Physical Properties:

Specific Gravity: 2.06 (ASTM D792)
Hardness: 65 Shore D (ASTM D2240)

Mechanical Properties:

Tensile Strength: 12.4 MPa (1,800 psi) (ASTM D4894)
Elongation: 65% (ASTM D4894)
Tensile Modulus: 538 GPa (78,000 psi x 10⁵) (ASTM D4894)
Compressive Stress @ 1% Strain: 14.5 MPa (2,100 psi) (ASTM D695)
Compressive Modulus: 1,014 MPa (147,000 psi) (ASTM D695)
Deformation under load, 2000 psi & RT: 4.5% (ASTM D621)

Thermal Properties:

Linear Coefficient of Thermal Expansion (Mold Direction): 11.7x10-5 mm/mm/°C (6.50x10-5 in/in/°F) (ASTM D696)
Linear Coefficient of Thermal Expansion (Cross Direction): 11.3x10-5 mm/mm/°C (6.28x10-5 in/in/°F) (ASTM D696)

Tribological Properties:

Coefficient of Friction: 0.10 (ASTM D3702)

Notes:

All testing is performed at room temperature unless otherwise specified.
Compression Strength was measured at 1% Strain.
Deformation Under Load was tested at 13.8 MPa (2,000 psi) for 24 hours.
The values provided are typical and intended for reference only; they should not be used as a basis for design specifications or quality control.

Catalog excerpts

OmnisealSolutions SAINT-GO BAIN BEYOND the boundaries of possible MATERIAL DATASHEET Fluoroloy® A21 Features & Benefits: Black color, proprietary custom PTFE, good material for back-up rings Excellent in steam and water under severe conditions, improved creep and extrusion resistance at elevated temperaturesSimilar to Fluoroloy® A16 but has increased hardness and wear resistance Working temperature range: -268°C to +316°C [-450°F to +600°F] Properties Omniseal Solutions

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