Compression Set Apparatus
Available for quotation
Standard Model
i Select between the two standards ISO 815 for WAC3 and ASTM D395 for WAC4Daylight
i Select the daylight required; Single, Double or TripleNeed help selecting the right configuration? Speak to our team to get the best configuration for you.
Compression Set Apparatus
Wallace provide 2 models of Compression Set Apparatus using the constant strain method of testing - the WAC3 model (ISO Standard) and the WAC4 model (ASTM Standard).
- Product Name
Compression Set Apparatus (Constant Strain)
- Overview
Wallace provide 2 models using the constant strain method of testing - the WAC3 model (ISO Standard) and the WAC4 model (ASTM Standard). Each model has 3 versions covering single, double and triple daylight.
- Standard
ISO 815
- Standard
ASTM D395
- Application
The ‘set’ is the residual strain in a rubber test piece after it has been subjected to stress for a given time and then allowed to recover for a given time, the temperature being substantially constant during the test. 'Compression Set' is the residual compression strain after compression, (a) to a given compression strain, or (b) a given compression stress.
- Calibration Options
Not Applicable
- Typical Lead Time
4-6 weeks (to be confirmed at time of quoting)
- What's Included?
- Plates
- Spacers (number & size dependent on daylight model chosen)
- Attachments
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Compression Set Apparatus (Constant Strain) Data Sheet 223 KB
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Compression Set Apparatus - C3
| Compression Set Apparatus - C3 | |||
| C3/1 Single Daylight | C3/2 Double Daylight | C3/3 Triple Daylight | |
| Part Number | WAC3/1 | WAC3/2 | WAC3/3 |
| Dimensions (mm) | 60 (h) x 126 (Ø) | 80 (h) x 126 (Ø) | 100 (h) x 126 (Ø) |
| Weight | 3.2kg | 4.5kg | 6.3kg |
| Spacers | 4.73mm x 3; 9.38mm x 3 | 4.73mm x 6; 9.38mm x 6 | 4.73mm x 9; 9.38mm x 9 |
| Operating Temperature | 10 to 500°C; Altitude 2000m maximum | ||
| Humidity Range | 10 to 80% RH non-condensing | ||
Compression Set Apparatus - C4
| Compression Set Apparatus - C4 | |||
| C4/1 Single Daylight | C4/2 Double Daylight | C4/3 Triple Daylight | |
| Part Number | WAC4/1 | WAC4/2 | WAC4/3 |
| Dimensions (mm) | 60 (h) x 126 (Ø) | 80 (h) x 126 (Ø) | 100 (h) x 126 (Ø) |
| Weight | 3.2kg | 4.5kg | 6.3kg |
| Spacers | 4.5mm x 3; 9.5mm x 3 | 4.5mm x 6; 9.5mm x 6 | 4.5mm x 9; 9.5mm x 9 |
| Operating Temperature | 10 to 500°C; Altitude 2000m maximum | ||
| Humidity Range | 10 to 80% RH non-condensing | ||
Two or more circular steel plates, 12.5mm thick and 126mm diameter, are clamped together with three bolts. Spacers of the appropriate thickness in the form of rings around each bolt are placed between the plates to control the thickness of the test pieces whilst compressed. Loose stainless steel discs are interleaved between the main plates to provide a highly polished surface in contact with the test pieces. These discs may easily be replaced should they become scratched, pitted or damaged.
The apparatus is available with single daylight (2 plates), double (3 plates) and triple daylight (4 plates). It can also be supplied with spacers of the required thickness to meet the ISO (Model C3) or the ASTM (Model C4) specifications. When ordering please state whether ISO or ASTM model is required, and also the number of daylights (or the number of plates).
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The primary difference is the spacer configuration supplied to meet the dimensional requirements of either BS/ISO or ASTM test methods.
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Yes. Alternative spacer thicknesses and configurations can be supplied to meet bespoke test requirements. Please contact us to get a quotation.
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Compression is controlled by precision spacers positioned between the plates. The spacer thickness determines the final compressed specimen height.
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Regular inspection of plates, spacers, bolts, and contact surfaces is recommended to ensure compliance with testing standards and maintain measurement accuracy.
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Yes. The interleaved stainless steel contact discs are designed to be replaced if scratched, pitted, or worn. Contact us to order your replacement.
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Yes, please contact us with the details of your requirements.
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