Compression Set Fixture
Compression Set Fixture is to test rubber under constant deflection in air.
- ASTM D395 Method B,
- ASTM D1056, ISO 815
Compression Set Fixture is to test rubber, elastomer, silicone rubber and others compression set after compressed for certain period under constant strain at given temperature.
| Item | ASTM D395 Method B | ISO 819 |
| Content | Compression set | Compression set |
| Test specimen | Type A:
-thickness 12.5±0.5mm -diameter 29.0±0.5mm Type B: -thickness 6.0±0.2mm -diameter 13.0±0.2mm |
Type A:
-thickness 12.5±0.5mm -diameter 29.0±0.5mm Type B: -thickness 6.3±0.3mm -diameter 13.0±0.5mm |
| Specimen condition temp. | Mini 3h at 23±2℃ | At least 3h at one of temperatures specified in ISO 23529 |
| Compression rate | Type A: 20-26%
Type B: 23-29% |
(10±1)%
(15±2)% (25±2)% |
