Crane Cylinder Heavy Duty NBR 90 Shore A O Rings

O-Rings

An O-ring, also known as a packing, or a toric joint, is a mechanical gasket in the shape of a torus; it is a loop of elastomer with a round cross-section,
designed to be seated in a groove and compressed during assembly between two or more parts, creating a seal at the interface.

The O-ring may be used in static applications or in dynamic applications where there is relative motion between the parts and the O-ring.
Dynamic examples include rotating pump shafts and hydraulic cylinder pistons.
O-rings are one of the most common seals used in machine design because they are inexpensive, easy to make,
and reliable and have simple mounting requirements. They can seal tens of megapascals of pressure.

DMS SEALS was established in 2008. We are a technology enterprise which specialized in the production of seals,

the development of seals material and the solution of the sealing of special working condition.

We own 120 staffs which including 70 middle and senior technicians.

Our factory covers more than 10000 square meters which including 8000 square meters for the workshop.

Our production equipment and test equipment are on leading level in the same industry.

We are the one of the biggest enterprise who specialized in manufacturing and developing seals in China.

We have long time cooperation and communication with many universities and research institutions at home and board.

We have already passed the certification of ISO 9001 and TS 16949. We have the mature technical reserve for the

solution of ultra-high temperature, ultra-high pressure, ultra-low temperature, highly corrosive and other special working

condition.