STRUT™ Reticulated Foam
Reticulated polyurethane foam
- Definition
- Strut network
- Side by side
Reticulated polyurethane foam
Reticulated polyurethane foam is open-cell foam with the cell membranes removed, leaving a three-dimensional strut network. It is used wherever air, liquid or particles must pass through a controlled pore size.
European buyers of our reticulated foam
How we reticulate
- Block foaming
- Reticulation
- Cutting
- Inspection
Foamed as continuous blocks.
Polyether or polyester foam is poured and rises into blocks up to 60 m long. Automatic mixing and pouring systems.
Chemistry
Polyether vs polyester.
Polyether
Polyester
Hydrolysis resistance
High
Lower in hot, humid conditions
Solvent and oil resistance
Lower
Higher
Cell uniformity
Standard
Finer
Tensile and tear strength
Lower
Higher
Temperature range
−40 to +100 °C typical
−40 to +100 °C typical
Typical uses
Aquarium and water filtration, fuel tank safety foam, wound-adjacent
Air filtration, polishing, ceramic filter templates, technical converting
Cost position
Base
Higher than polyether
Grades
Grade table.
Manufacturer specifications · FR.46 · Revision 03 · 21.08.2026
Manufacturer limits and tolerances from FR.46; not illustrative values or a batch certificate. “Not specified” means the source provides no measurement. PPI nominal values and TA.82 ranges are shown separately.
Open original PDF ↓| Grade | Chemistry | PPI | TA.82 PPI range | Density kg/m³ (ISO 845) | ILD 40% hardness N (ISO 2439) | Tensile kPa (ISO 1798) | Elongation % | Tear strength N/cm (ASTM D3574) | CLD 40% hardness kPa (ISO 3386) | Air permeability dm³/s (ISO 7231) | FR option | Datasheet |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| D 22 RET. U6 10 PPI | Polyether | 10 | 7-13 | 22 (±2) | 190 (±15%) | ≥ 70 | ≥70 | ≥ 4 | 3-5 | ≥ 6 dm³/s | Not specified | View |
| D 22 RET. U10 20 PPI | Polyether | 20 | 17-23 | 22 (±2) | 190 (±15%) | ≥ 70 | ≥ 70 | ≥ 4 | 3-5 | ≥ 6 dm³/s | Not specified | View |
| D 22 RET. U13 20 PPI | Polyether | 20 | 17-23 | 22 (±2) | 180 (±15%) | ≥ 70 | ≥ 70 | ≥ 4 | 3-5 | ≥ 6 dm³/s | Not specified | View |
| D 22 RET. U20 30 PPI | Polyether | 30 | 26-34 | 22 (±2) | 130 (±15%) | ≥ 80 | ≥ 100 | ≥ 4.5 | 2,5-4,5 | ≥ 4.5 dm³/s | Not specified | View |
| D 22 RET. U30 45 PPI | Polyether | 45 | 41-49 | 22 (±2) | 130 (±15%) | ≥ 100 | ≥ 120 | ≥ 5 | 2-4 | ≥ 3.5 dm³/s | Not specified | View |
| D 22 RET. U45 60 PPI | Polyether | 60 | 54-66 | 22 (±2) | 130 (±15%) | ≥ 110 | ≥ 140 | ≥ 5 | 2-4 | ≥ 3.0 dm³/s | Not specified | View |
| D 26 RET. U45 60 PPI | Polyether | 60 | 54-66 | 26 (±2) | 165 (±15%) | ≥ 120 | ≥ 120 | ≥ 4.5 | 3-5 | ≥ 3 dm³/s | Not specified | View |
| D 26 RET. U60 80 PPI | Polyether | 80 | 72-88 | 26 (±2) | 140 (±15%) | ≥ 120 | ≥ 120 | ≥ 4.5 | 2,5-5 | ≥ 1.5 dm³/s | Not specified | View |
| D 26 RET. U60 80 PPI SENBR | Polyether | 80 | 72-88 | 26 (±2) | 140 (±15%) | ≥ 120 | ≥ 120 | ≥ 4.5 | 2,5-5 | ≥ 1.5 dm³/s | SENBR | View |
| D 28 RET. U16 25 PPI | Polyether | 25 | 22-28 | 28 (±2) | 190 (±15%) | ≥ 90 | ≥ 90 | ≥ 4.5 | 3,5-5,5 | ≥ 4,5 dm³/s | Not specified | View |
| D 30 RET. U10 20 PPI | Polyether | 20 | 17-23 | 30 (±2) | 170 (±15%) | ≥ 70 | ≥ 80 | ≥ 4.5 | 4,0-7,0 | ≥ 6 dm³/s | Not specified | View |
| D 32 RET. U10 20 PPI | Polyether | 20 | 17-23 | 32 (±2) | 180 (±15%) | ≥ 70 | ≥ 80 | ≥ 4.5 | 4,0-7,0 | ≥ 6 dm³/s | Not specified | View |
| D 22 EST. RET. U10 20 PPI | Polyester | 20 | 17-23 | 22 (±2) | 200 (±15%) | ≥ 70 | ≥ 70 | ≥ 4.5 | 3,0-5,0 | ≥ 5 dm³/s | Not specified | View |
| D 22 EST. RET. U13 20 PPI | Polyester | 20 | 17-23 | 22 (±2) | 150 (±15%) | ≥ 70 | ≥ 70 | ≥ 4.5 | Not specified | ≥ 5 dm³/s | Not specified | View |
| D 26 P.ESTER RET. U10 20PPI | Polyester | 20 | 17-23 | 26 (±3) | 150 (±15%) | ≥ 80 | ≥ 90 | ≥ 5 | Not specified | ≥ 4.5 dm³/s | Not specified | View |
| D 30 EST. RET. U8 15 PPI | Polyester | 15 | 12-18 | 30 (±3) | 190 (±15%) | ≥ 80 | ≥ 90 | ≥ 5 | 4,0-8,0 | ≥ 5 dm³/s | Not specified | View |
| D 30 P.ESTER RET. U10 20PPI | Polyester | 20 | 17-23 | 30 (±3) | 170 (±15%) | ≥ 80 | ≥ 90 | ≥ 5 | 3,0-6,0 | ≥ 5 dm³/s | Not specified | View |
| D 30 EST. RET. U20 30 PPI | Polyester | 30 | 26-34 | 30 (±3) | 170 (±15%) | ≥ 130 | ≥ 170 | ≥ 4.5 | 3,0-6,0 | ≥ 4 dm³/s | Not specified | View |
| D 30 EST. RET. U30 45 PPI | Polyester | 45 | 41-49 | 30 (±3) | 170 (±15%) | ≥ 130 | ≥ 180 | ≥ 4.5 | 3,0-6,0 | ≥ 3.5 dm³/s | Not specified | View |
| D 30 EST. RET. U45 60 PPI | Polyester | 60 | 54-66 | 30 (±3) | 150 (±15%) | ≥ 110 | ≥ 140 | ≥ 4.5 | 2,0-5,0 | ≥ 2,0 dm³/s | Not specified | View |
| D 30 EST. RET. U60 80 PPI | Polyester | 80 | 72-88 | 30 (±3) | 140 (±15%) | ≥ 130 | ≥ 150 | ≥ 5 | 2,0-5,0 | ≥ 1,3 dm³/s | Not specified | View |
| D 30 EST. RET. MER. HİD. | Polyester | Not specified | Not specified | 30 (±3) | 150 (±15%) | ≥ 90 | ≥ 140 | ≥ 4.5 | 3,0-6,0 | ≥ 1,5 dm³/s | Not specified | View |
| D 30 EST. RET. MER. HİD.SOFT | Polyester | Not specified | Not specified | 30 (±3) | 120 (±15%) | ≥ 90 | ≥ 140 | ≥ 4.5 | 2,0-5,0 | ≥ 1,5 dm³/s | Not specified | View |
| D 35 EST. RET. U65 80 PPI | Polyester | 80 | 72-88 | 35 (±3) | 170 (±15%) | ≥ 150 | ≥ 150 | ≥ 4.5 | Not specified | ≥ 1,5 dm³/s | Not specified | View |
| D 35 EST. RET. MER. HİD. | Polyester | Not specified | Not specified | 35 (±3) | 170 (±15%) | ≥ 80 | ≥ 175 | ≥ 4.5 | 2,0-6,0 | ≥ 1,5 dm³/s | Not specified | View |
| D 40 EST. AİR POLİPAD | Polyester | Not specified | Not specified | 40 (±3) | 250 (±15%) | ≥ 150 | ≥ 120 | ≥ 4.5 | 6,0-13,0 | Not specified | Not specified | View |
| D 45 EST. RET. 60 PPI | Polyester | 60 | 54-66 | 45 (±5) | 225 (±15%) | ≥ 120 | ≥ 150 | ≥ 4 | Not specified | ≥ 0,5 dm³/s | Not specified | View |
| D 45 EST. RET. U80 100 PPI | Polyester | 100 | 90-110 | 45 (±5) | 210 (±15%) | ≥ 120 | ≥ 150 | ≥ 4 | 3,0-6,0 | ≥ 0,5 dm³/s | Not specified | View |
Tolerances and QC
- PPI measurement method
- Cell count per linear inch under magnification, cross-checked by air permeability (ISO 7231)
- Lot-to-lot control
- PPI, density and air permeability recorded for every lot
- Documentation
- Certificate of analysis per shipment
Where it is used.
Questions.
What PPI do I need for air pre-filtration?+
It depends on the dust load and allowed pressure drop. Send your spec through Match my foam and we recommend a grade.
PPI vs density: what is the difference?+
PPI (pores per linear inch) describes cell size. Density (kg/m³, ISO 845) describes mass per volume. The two are specified independently.
Can you match a sample from another supplier?+
Yes. Send the sample or its datasheet through Match my foam. We match and test it in working days and ship a sample with a lab report.
What is the lead time to Germany?+
Quoted per order. Delivered duty-free under the EU–Türkiye customs union.
Do you supply blocks or sheets?+
Both. Blocks up to 60 m, sheets and rolls cut to size. Thickness to your drawing.
Is FR available in reticulated grades?+
Specifications in FR.46. FMVSS 302 results apply to the tested 26 D SENBR sample only; other qualifications must be confirmed per grade.
Do EU buyers pay duty?+
No. Industrial goods move duty-free under the EU–Turkey customs union. VAT applies as with any EU supplier.