| Composition Cork |
| Products |
Characteristics and Uses |
Specific
Gravity |
Density
(ft/lbs3) |
Durometer
Shore A (pts) |
Tensile
Strength (psi)
(min.) |
Compressibility
% (400 psi) |
Recovery %
(400 psi)
(min) |
| F-22 |
10/20 granule. Highly resilient and compressible. Used as a gasket with low torque loads. Used as serving tray cushioning, shoe insoles, and table mats. |
|
14 (min) |
|
75 |
30-50 |
80 |
| F-23 |
10/20 granule. More dense and compressible than F-22. Qualified in automotive fluid sealing purposes under light and medium bolt loads. Conforms to HH-C-576B, Type IIA, Class 2. |
|
17 (min) |
|
100 |
25-40 |
75 |
| F-28 |
Medium size granules. More dense and less compressible than F-23. Used extensively in high performance applications where high bolt loads are encountered. |
|
20 (min) |
|
150 |
15-30 |
65 |
| F-33 |
Medium size granules high density and tensile strength. Excellent cushioning material under heavy machinery. Also used as a bonded facing material for glass and metal wiping applications |
|
24 (min) |
|
175 |
10-20 |
60 |
| P-24 |
10/20 fine granule, resin bonded. Medium low density resistant to fungus growth. Used in sealing applications on light duty, low load flanges. Used extensively in the shoe industry and for use with cushioning metal to glass assemblies. |
|
17 (min) |
|
100 |
25-40 |
75 |
| P-31 |
Medium granule, resin bonded. Medium density resistant to fungus growth. Used in general sealing applications under high bolt loads. Excellent vibration dampening properties. |
|
20 (min) |
|
150 |
15-30 |
65 |
| P-33 |
Medium granule. High density with low compressibility and high friction characteristics. Used in clutch and brake assemblies, expansion joint filler and gasketing where high bolt pressures are required. |
|
24 (min) |
|
175 |
10-20 |
60 |
| P-46 |
High density, low compressible resin bonded composition cork with fine granules. Used in clutch assemblies, high heat and friction applications as well as special gasket applications. |
|
31 (min) |
|
250 |
5-15 |
|
| Cork/Synthetic Rubber Blend |
| Products |
Characteristics and Uses |
Specific
Gravity |
Density
(ft/lbs3) |
Durometer
Shore A (pts) |
Tensile
Strength (psi)
(min.) |
Compressibility
% (400 psi) |
Recovery %
(400 psi)
(min) |
| NCA-45 |
Medium oil resistance. Used in most automotive and sealing applications including valve covers, oil pans, and transmission pans. |
.56-.76 |
35-47.5 |
50-70 |
140 |
30-55 |
75 |
| NCA-50 |
Medium compressibility and oil resistance. A good general purpose sealing material offering good performance in a wide variety of applications. |
.56-.88 |
35-55 |
50-70 |
150 |
40-50 |
80 |
|
