DALMAR S.p.A.

Gaskets Inflatable Seals

Gaskets Inflatable Seals

Dalmar hose Hutchinson because ...

Hutchinson controls the entire production chain within its factories: every year it develops, produces and certifies more than 100 types of compounds formulated to meet the strictest specifications and regulations of the industry. Pioneer in the field of seals. In 1948 he introduced the R-ring in Europe, which would later be known by the common term of O-ring: the simplest and most used seal in the world.

The inflatable seals, in elastomer, are a simple solution to ensure a hermetic seal in the presence of moving elements and / or variable games. They compensate for construction irregularities and deformations undergone by the sealing surfaces and are a practical solution to solve the problems of tightening components, locking or handling devices. Under the action of a motor fluid (generally compressed air) the seal is activated passing from the rest position to the working position. Once the fluid pressure is released, the material is able to resume its initial position by virtue of the memory properties of the elastomer. The internal pressure of the fluid, which allows contact in the sealing area, must always be higher than the external pressure to be contained (from + 0,

The profiles in the catalog, relating to the inflatable seals, have been classified according to the shape, into 4 families:

• Development seals type D• Development seals and runner type P• Seals type H• Extension seals type E