Vacuum-cast polyurethane rubber (PUR rubber)
Elastomer components from 30 to 100 Shore A

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 ...