This document is a guideline. Each intended application of this material needs to be adequately evaluated using good engineering principles.

These are our most popular materials, others are available.

GL121-119
A flexible non-asbestos semi-cured exhibiting excellent stability and wear with medium friction and good wear characteristics.
Mechanical Properties
Tensile Strength595 PSI
Flexural StrengthFlexible
Max. Compressive Strength4500 PSI
Max. Operating Pressure150 PSI
Max. Rubbing Speed3500 FPM
Friction Properties
Avg. Coefficient of Friction0.41 Normal
 0.39 Hot
Static Coefficient0.50
Wear Rate/HP Hour0.004 in3
Thermal Properties
Max. Operating Temp.500° F
Physical Properties
Specific Gravity1.98 g/cm3
Shore D Hardness38-42
GL121-110
A flexible non-asbestos molded material with medium to high friction, good stability and good wear characteristics.
Mechanical Properties
Tensile Strength400 PSI
Flexural Strength900 PSI
Max. Compressive Strength2500 PSI
Max. Operating Pressure150 PSI
Max. Rubbing Speed3000 FPM
Friction Properties
Avg. Coefficient of Friction0.43 Normal
 0.41 Hot
Static Coefficient0.53
Wear Rate/HP Hour0.009 in3
Thermal Properties
Max. Operating Temp.500° F
Physical Properties
Specific Gravity2.15 g/cm3
Shore D Hardness38-42
GL121-120
A flexible non-asbestos molded material with medium to high friction, good stability and good wear characteristics.
Mechanical Properties
Tensile Strength1000 PSI
Flexural Strength2000 PSI
Max. Compressive Strength5700 PSI
Max. Operating Pressure150 PSI
Max. Rubbing Speed3000 FPM
Friction Properties
Avg. Coefficient of Friction0.48 Normal
 0.47 Hot
Static Coefficient0.66
Wear Rate/HP Hour0.009 in3
Thermal Properties
Max. Operating Temp.500° F
Physical Properties
Specific Gravity2.01 g/cm3
Shore D Hardness42-48
GL134-142
A flexible non-asbestos molded material with medium to high friction, good stability and good wear characteristics.
Mechanical Properties
Tensile Strength1000 PSI
Flexural Strength900 PSI
Max. Compressive Strength2500 PSI
Max. Operating Pressure450 PSI
Max. Rubbing Speed2500 FPM
Friction Properties
Avg. Coefficient of Friction0.42 Normal
 0.40 Hot
Static Coefficient0.56
Wear Rate/HP Hour0.011 in3
Thermal Properties
Max. Operating Temp.700° F
Physical Properties
Specific Gravity1.60 g/cm3
Shore D Hardness78-82
GL144-516
A rigid non-asbestos aramid material with medium to high friction, exhibiting excellent integrity, good stability and good wear characteristics.
Mechanical Properties
Tensile Strength3500 PSI
Flexural Strength1500
Max. Compressive Strength2500 PSI
Max. Operating Pressure200 PSI
Max. Rubbing Speed5000 FPM
Friction Properties
Avg. Coefficient of Friction0.48 Normal
 0.46 Hot
Static Coefficient0.48
Wear Rate/HP Hour0.006 in3
Thermal Properties
Max. Operating Temp.500° F
Physical Properties
Specific Gravity1.70 g/cm3
Shore D Hardness70-80
GL181-142
A flexible non-asbestos molded material with high friction, good stability and good wear characteristics.
Mechanical Properties
Tensile Strength4000 PSI
Flexural Strength1660
Max. Compressive Strength33000 PSI
Max. Operating Pressureneed to get
Max. Rubbing Speed5000 FPM
Friction Properties
Avg. Coefficient of Friction0.43 Normal
 0.41 Hot
Static Coefficient0.53
Wear Rate/HP Hour0.009 in3
Thermal Properties
Max. Operating Temp.500° F
Physical Properties
Specific Gravity2.15 g/cm3
Shore D Hardness38-42
GL483-115
This material is a composite friction material consisting of extremely wear resistant carbon particles, layered upon a Kevlar mat. The layered composition is bound with a high strength, highly temperature resistant phenolic resin. GL483-115 is effective for applications where a higher static coefficient of friction and lower wear rate is needed.

Fluids and Flow
This material is compatible with motor oil, automatic transmission fluids and gear lubes. Lubricants that are highly alkaline will cause the phenolic binders to break down. Fluid flow is desirable for most GL483-115 applications, flow should be adequate to prevent warping or annealing of the systems components or to prevent exceeding the 750° F max. operating temperature. Fluid flow may have a logarithmic relationship to wear rate, that is, doubling the flow rate may reduce the wear factor by 10. GL483-115 will accept cut groove patterns as may be required.
Mechanical Properties
Max. Compressive Strength1800 PSI
Max. Operating Pressure1800 PSI
Max. Energy Input4.6 hp/in2
Friction PropertiesStatic/Dynamic
Med. Energy0.11/0.12
Wear Rate*12x10-8
Thermal Properties
Max. Operating Temp.600° F
Max. Spike Temp.750° F
*Coefficient and wear rate can vary significantly depending on the environment, such as finish and hardness of mating part, unit load, lubricant and operating temperature. This wear rate has been observed operating at 1400 PSI, in GM Synchromesh fluid against a mating member with a 14 micro-inch ground finish.
GL383-114
GL383-114 is a non-asbestos, cellulose fiber, composite friction paper. The paper composition is saturated with a high strength, highly temperature resistant phenolic resin. GL383-114 is effective for applications where a higher static coefficient of friction and lower wear rate is needed.

Fluids and Flow
This material is compatible with motor oil, automatic transmission fluids and gear lubes. Lubricants that are highly alkaline will cause the phenolic binders to break down. Fluid flow is desirable for most GL383-114 applications, flow should be adequate to prevent warping or annealing of the systems components. Fluid flow may have a logarithmic relationship to wear rate, that is, doubling the flow rate may reduce the wear factor by 10. GL383-114 will accept cut groove patterns as may be required.
Mechanical Properties
Max. Compressive Strength500 PSI
Max. Operating Pressure350 PSI
Max. Energy Input1.3 hp/in2
Friction PropertiesStatic/Dynamic
Med. Energy0.12/0.11
Wear Rate*12x10-8
Thermal Properties
Max. Operating Temp.Fluid Dependent
Max. Spike Temp.Fluid Dependent
*Coefficient and wear rate can vary significantly depending on the environment, such as finish and hardness of mating part, unit load, lubricant and operating temperature. This wear rate has been observed operating at 1400 PSI, in GM Synchromesh fluid against a mating member with a 14 micro-inch ground finish.
GL483-110
This material is a composite friction material consisting of extremely wear resistant carbon particles, layered upon a Kevlar mat. The layered composition is bound with a high strength, highly temperature resistant phenolic resin. GL483-110 is effective for applications where a higher static coefficient of friction and lower wear rate is needed.

Fluids and Flow
This material is compatible with motor oil, automatic transmission fluids and gear lubes. Lubricants that are highly alkaline will cause the phenolic binders to break down. Fluid flow is desirable for most GL483-110 applications, flow should be adequate to prevent warping or annealing of the systems components or to prevent exceeding the 750° F max. operating temperature. Fluid flow may have a logarithmic relationship to wear rate, that is, doubling the flow rate may reduce the wear factor by 10. GL483-110 will accept cut groove patterns as may be required.
Mechanical Properties
Max. Compressive Strength1800 PSI
Max. Operating Pressure1800 PSI
Max. Energy Input4.6 hp/in2
Friction PropertiesStatic/Dynamic
Med. Energy0.12/0.11
Wear Rate*12x10-8
Thermal Properties
Max. Operating Temp.600° F
Max. Spike Temp.750° F
*Coefficient and wear rate can vary significantly depending on the environment, such as finish and hardness of mating part, unit load, lubricant and operating temperature. This wear rate has been observed operating at 1400 PSI, in GM Synchromesh fluid against a mating member with a 14 micro-inch ground finish.