Polyurethane Rubbers  Manufacturers, Traders, Suppliers

The ring is crucial. COG is absolutely uncompromising when it comes to quality. Because only in this way can our customers count among the best in their industries. COG supplies a wide range of materials from the world's largest O-ring stock (45 thousand variants ready to be called off), including FFKM. Our portfolio includes O-rings, mouldings, support rings and various Services. Test over 150 years of experience and innovation!

• Over 45,000 items from stock
• Tools for approx. 22.000 different O-ring dimensions available
• All essential materials for elastomer sealing technology available (u.a. FKM, FFKM, FEPM, NBR, VMQ and many more) and many special materials (including PTFE, FEP, TPU and FEP coated)
• Own development and production.
• Production also in small series
• Approvals and approvals available for various materials

O-rings:

• inside diameter from 0.74 to 1.400 mm with cord thicknesses from 0.6 to 30 mm
• any inside diameter from approx. 1,400 mm to 3,000 mm and larger in the cord thicknesses 5 to 14 mm in the continuous vulcanization process.
• moulded parts including sleeves, flat rings, square rings according to samples or drawings made of different materials.

•   ideal for concrete mould production
•   dense cell structure of the negative mould
•   reduced use of formwork oil
•   very low viscosity, no fillers

Even more beautiful concrete surfaces through V-polymer
The main advantage of VytaFlex® compared to other products available on the market is the unique V-polymer.
A special formulation which results in a denser cell structure during the cross-linking process and thus a smoother surface of the negative mould. This enables better separating properties and the economical use of concrete formwork oil. Due to the resulting lower residues in the PUR negative mould, both more uniform and colour-true concrete casts are achieved. The simple mixing ratio and good flowability also make processing easier. Vacuum venting is not necessary. VytaFlex® polyurethanes cure with negligible shrinkage to a durable rubber that can be used for numerous castings and meets the high demands of mass production with concrete, plaster and other abrasive materials. Negative molds made of VytaFlex® 60 are ideal for casting modern types of concrete such as UHPC (Ultra High Performance Concrete) or SCC (Self Compacting Concrete) with high curing temperatures.

mould, injection, cutting, CNC machine