
System construction space
2000 x 1000 x 1000 mm
Available materials
PUR rubber 35–100 Shore A in 5-Shore increments
Lead time
2–5 working days
More information
Comparable technology
Vacuum casting is ideal for duplicating models and producing sufficient elastomer components. Starting from a master model, a silicone mold is created, which is then used to duplicate parts made of polyurethane rubber.
Fundamentally, two different types of rubber material are available. An amber-colored rubber, which is then typically colored black. Elongations at break of up to 400% and higher are feasible with cast components.
The second option is a transparent material. Unfortunately, its elongation-at-break properties are worse than those of the amber-colored rubber. However, its advantage is its colorability or, if desired, the feasibility of a transparent elastomer component.
Typical applications
All kinds of soft parts with a hardness of 35–100 Shore A (available in 5-Shore increments). Functional prototypes for all applications cast in near-series material, which will subsequently be manufactured from EPDM, silicone or TPE. Whether vehicle seals, bellows, housing seals or soft-part components on hard parts – almost anything is possible with this technology.
Soft parts in silicone and rubber
1zu1 can now also produce flexible parts, such as hoses or seals made of silicone, as food-grade variants – in any color and with a Shore hardness from 10 A to 70 A.
Elastomer materials (PU rubber) of varying hardness (from 35 – 100 Shore A) are available. For materials similar to thermoplastics, a hardness of 45–85 Shore D can be selected. Typical areas of application include housings, covers, gaskets, covers for vehicle apparatus construction, foundry models, model and prototype construction, mold tubes, hoses ...
Shore A | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 95 | ||||
Shore D | 45 | 55 | 60 | 65 | 70 | 80 |
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Vacuum-cast polyurethane rubber (PUR rubber)
1zu1direkt: Our product range can be ordered online ...In terms of strength values, technical prototypes should be as close as possible to the subsequent series products. Our vacuum-casting process optimally meets all requirements in terms of usage properties and permanent load capacity.
Polyurethane casting resins
Test method | Rubber | |
---|---|---|
Shore A hardness | ISO 868-85 | selectable: 35,40,45,50,55,60,65,70,75,80,85,90,95,100 |
Elongation at break [%] | ISO 37-77 | 200–300 |
Thermal stability [°C] | T.M.A. Mettler | 120 |
Thermal stability [°C] | HDT | |
Shrinkage [%] | 5mm thickness | 0.1 |
Color | black | |
Final curing at 23°C | 5 days |
Chemical resistance of PU rubber, black 40 A
Mass change % after | 7 days | 14 days | 30 days | 150 days |
---|---|---|---|---|
Diesel | 28.8 | 28.9 | 30.1 | 29.5 |
Engine oil | -3.9 | -4.4 | -3.5 | -3.2 |
Brake fluid | 205.1 | 294.1 | Destroyed | Destroyed |
Acetone | 457.6 | 500.1 | Destroyed | Destroyed |
Tap water | 2.0 | 2.1 | 2.1 | 2.6 |
Sea water | 1.8 | 1.8 | 1.7 | 1.7 |
10% sulfuric acid | 1.6 | 1.6 | 1.7 | 2.1 |
10% hydrochloric acid | 1.7 | 1.7 | 1.7 | 1.7 |
10% sodium hydroxide solution | 1.6 | 1.5 | 1.5 | 1.5 |
Coolant | 2.6 | 2.8 | 3.1 | 3.2 |
Chemical resistance of PU rubber, black 80 A
Mass change % after | 7 days | 14 days | 30 days | 150 days |
---|---|---|---|---|
Diesel | 19.4 | 21.1 | 21.0 | 21.0 |
Engine oil | -0.2 | -0.2 | -0.3 | -0.5 |
Brake fluid | Destroyed | Destroyed | Destroyed | Destroyed |
Acetone | Destroyed | Destroyed | Destroyed | Destroyed |
Tap water | 2.0 | 2.0 | 2.0 | 2.0 |
Sea water | 1.9 | 1.9 | 1.8 | 1.8 |
10% sulfuric acid | 1.5 | 1.5 | 1.5 | 1.6 |
10% hydrochloric acid | 1.8 | 1.7 | 1.7 | 1.8 |
10% sodium hydroxide solution | 1.5 | 1.5 | 1.5 | 1.6 |
Coolant | 2.5 | 2.8 | 3.0 | 3.2 |
Chemical resistance of PU rubber, black 100 A
Mass change % after | 7 days | 14 days | 30 days | 150 days |
---|---|---|---|---|
Diesel | 36.1 | 37.7 | 39.5 | 39.9 |
Engine oil | -1.5 | -2.2 | -2.8 | -3.4 |
Brake fluid | 170.0 | 245.1 | Destroyed | Destroyed |
Acetone | Destroyed | Destroyed | Destroyed | Destroyed |
Tap water | 1.8 | 1.8 | 1.8 | 2.6 |
Sea water | 1.7 | 1.6 | 1.6 | 1.7 |
10% sulfuric acid | 1.4 | 1.4 | 1.5 | 2.1 |
10% hydrochloric acid | 1.5 | 1.5 | 1.4 | 1.6 |
10% sodium hydroxide solution | 1.3 | 1.2 | 1.2 | 1.2 |
Coolant | 2.1 | 2.4 | 2.6 | 3.0 |