SCAT Safety Caps - Material Data Sheet
Material properties of the SafetyCaps
The following table lists the material properties and technical data for the individual SafetyCap components (parts A – G).
The complete material data sheet is also available as a PDF for viewing and download:
General product data
| Characteristic | Specification |
|---|---|
| Product Group | SafetyCaps for HPLC solvent supply |
| Intended use / basic function | Blocking solvent vapours during solvent supply to HPLC / UHPLC instruments, prevention of contamination and underpressure. |
| Cap / bottle size(s) | GL 45 |
| Max. flow rate (air valve) | ≤ 400 ml / min (suitable for preparative applications) |
| Pore size (air valve) | 1 µm |
| Tubing connector type | One-piece fitting with integrated ferrule |
| Tubing connector sizes | 1.6 / 2.3 / 3.2 / 4.76 / 6.35 mm OD tubing (depending on model) |
| Number of tubing connectors | 1 / 2 / 3 / 4 / 6 (depending on model) |
Statement on suitability for contact with foodstuff
FDA approved US regulation: Code of federal regulation 21 CFR Ch.1; section 177.1550 Perfluorocarbon Resins of the Food and Drug Administration/US.
EU Regulation: EU 1935/2004 - 10/2011 on plastic materials and articles to come in contact with food.
Operating instruction: Click on sections A–G to show or hide the material properties and technical data for the individual SafetyCap components. The labels A–G correspond to the markings in the illustration.
Material and component data
A BodyPTFE premium grade – medical grade
| Property | Value | Test method |
|---|---|---|
| Color | White | - |
| Specific gravity | 2.130 - 2.190 g/cm³ | ASTM D 792 |
| Water absorption | 0.01 % | ASTM D 570 |
| Flammability | V-0 | UL 94 |
| Tensile strength | ≥ 25 MPa | ASTM D 4894 |
| Elongation | ≥ 280 % | ASTM D 4894 |
| Hardness | ≥ 54 Shore D | ASTM D 2240 |
| Ball hardness | ≥ 23 MPa | ASTM D 785 |
| Compression strength at 1% deformation | ≥ 4 MPa | ASTM D 695 |
| Deformation under load (140 kg/cm² for 24 hrs. at 23°C) | 10 - 13 % | ASTM D 621 |
| Permanent deformation (after 24 hrs. relaxation at 23°C) | 6 - 7.5 % | ASTM D 621 |
| Coefficient of static friction | 0.08 - 0.10 | ASTM D 1894 |
| Coefficient of dynamic friction | 0.06 - 0.08 | ASTM D 1894 |
| Wear factor K | 2,900 | ASTM D 3702 |
| Wear coefficient | 20,000 - 25,000 cm³ min 10⁻⁸ kg m h | |
| Thermal conductivity | 0.34 W/m·k | ASTM C 177 |
| Coefficient of linear thermal expansion from 25 to 100 °C | 12 - 15 × 10⁻⁵ / °C | ASTM D 696 |
| Dielectric strength | ≥ 30 kV/mm | ASTM D 149 |
| Volume resistivity | 10¹⁸ Ohm·cm | ASTM D 257 |
| Surface resistivity | 10¹⁷ Ohm | ASTM D 257 |
B Screw CapPolyphenylensulfide (PPS)
| Property | Value | Test method |
|---|---|---|
| E-Module (bending test) | 13,500 MPa | ISO 178 |
| Bending strength | 260 MPa | ISO 178 |
| Strain of the outer fibre (maximum load) | 2.2 % | ISO 178 |
| E-Module (tension test) | 15,000 MPa | ISO 527 |
| Breaking resistance (tension test) | 190 MPa | ISO 527 |
| Breaking elongation (tension test) | 1.7 % | ISO 527 |
| Izod impact resistance 1U | 50 kJ/m² | ISO 180 / 1U |
| Impact resistance 1eU | 55 kJ/m² | ISO 179 / 1eU |
| Impact resistance 1eU -30°C | 52 kJ/m² | ISO 179 / 1eU |
| HDT / A (1,8 MPa) | 270 °C | ISO 75-1/-2 |
| Melting temperature (DSC) | 280 °C | ISO 11357 |
| Density | 1.650 kg/m³ | ISO 1183 |
| Flammability, 0.75 mm | V-0 | UL 94 |
| Yellow card available | Yes | - |
C Valve HousingPolypropylene (PP)
| Property | Value | Test method |
|---|---|---|
| Melt flow rate (MFR) at 230 °C and 2.16 kg | 10.5 g/10 min | ASTM D 1238 |
| Density | 905 kg/m³ | ASTM D 792 |
| Molecular weight distribution | Broad | - |
| Isotacticity | Medium | - |
| Anti block agent | No | - |
| Slip agent | No | - |
| Tensile test: stress at yield | 36 MPa | ASTM D 638 |
| Tensile test: strain at yield | 9 % | ASTM D 638 |
| Tensile test: secant modulus at 1% elongation | 1,800 MPa | ASTM D 638 |
| Vicat softening temperature at 10 N (VST/A) | 154 °C | ASTM D 1525 |
| Vicat softening temperature at 50 N (VST/B) | 95 °C | ASTM D 1525 |
D Valve MembranePTFE, virginal, porous
| Property | Value | Test method |
|---|---|---|
| Material characteristics | Symmetric, porous structure; Hydrophobic on both sides; Free of PFOA; Free of heavy metals; Free of animal substances | |
| Colour | white | |
| Pore size | 1 µm | |
| Typical water inlet pressure (WIP) | > 0.4 bar | |
| Temperature resistance | -200 to 250 °C | |
| Chemical resistance | Almost universal | |
| Conformity | Protection class IP68; ISO 16750-5:2010; Directive 2000/53/EG; Directive 10/2011/EG; Directive 2002/95/EG; Directive 2003/11/EG |
E Valve FlapSilicone VMQ
| Property | Value | Test method |
|---|---|---|
| Colour | white | |
| Hardness (Shore A) | 50 | |
| Max. flow rate | 400 ml / min | |
| Sterilisation resistance | ETO, Gamma, Steam | |
| Cv | 0.08 | |
| Max. back pressure | 300 kPa | |
| Opening pressure | 0.5 kPa | |
| Conformity | ISO 109993, USP class VI, BGW |
F Tube FittingTeflon™ PFA 340
| Property | Value | Test method |
|---|---|---|
| Melt flow rate | 14 g/10 min | ASTM D 3307 / ISO 12086 |
| Melting point | 305 °C | ASTM D 4591 |
| Specific gravity | 2.15 | ASTM D 792 |
| Critical shear rate, 372 °C | 50 1/s | - |
| Tensile strength: 23 °C | 25 MPa | ASTM D 3307 / ISO 12086 |
| Tensile strength: 250 °C | 12 MPa | ASTM D 3307 / ISO 12086 |
| Ultimate elongation: 23 °C | 300 % | ASTM D 3307 / ISO 12086 |
| Ultimate elongation: 250 °C | 480 % | ASTM D 3307 / ISO 12086 |
| Flexural modulus: 23 °C | 590 MPa | ASTM D 790 / ISO 178 |
| Flexural modulus: 250 °C | 55 MPa | ASTM D 790 / ISO 178 |
| MIT folding endurance (0.20 mm, 8 mil film) | 15,000 cycles | ASTM D 2176 |
| Hardness durometer | D55 | ASTM D 2240 / ISO 868 |
| Dielectric strength, short time, 0.25 mm (0.010 in) | 80 kV/mm | ASTM D 149 / IEC 243 |
| Dielectric constant, 1 MHz (10⁶ Hz) | 2.03 | ASTM D 150 / IEC 250 |
| Dissipation factor, 1 MHz (10⁶ Hz) | < 0.0002 | ASTM D 150 / IEC 250 |
| Volume resistivity | 10¹⁸ Ohm·cm | ASTM D 257 / ISO 1325 |
| Water absorption, 24 hr | < 0.03 % | ASTM D 570 |
| Weather and chemical resistance | Outstanding | - |
| Limiting oxygen index | > 95 | ASTM D 2863 / ISO 4589 |
| Continuous service temperature | 260 °C | - |
| Flammability | V-0 | UL 94 |
G Cap SealVITON (FPM)
| Property | Value | Test method |
|---|---|---|
| Colour | Black | - |
| Hardness | 73 - 77 Shore A | ASTM D 2240 |
| Operating temperature (air) | -20 to 200 °C | - |
| Density | 1.85 - 1.98 g/cm³ | - |
| Tensile strength | 12 - 14.86 MPa | ASTM D 412 |
| Elongation at break | 175 - 216 % | ASTM D 412 |
| Compression strain 22 h / 200 °C | 11 - 12 % | ASTM D 395 |
