Seal Static - O-Ring - MFJ Series Material: NBR Standard: non standard,Hardness: 80~90Shore AWorking Temperature: -35℃~+120℃,Application: Mainly used for guiding the 乐投网:Static seal or guide sleeve the dust resistance, but also as a pneumatic cylinder piston bi-directional seal. As a mine 乐投网:Static seal need to add a guide ring, as a pneumatic piston seal to be added when the double guide ring. O-rings are a one piece object usually molded from elastomeric material. O-rings are in the shape of a torus (donut shape). O-rings can form a static or dynamic seal. A static o-ring seal is used for containing a pressure or maintaining a vacuum. Dynamic o-ring seals can be reciprocating or rotating. An o-ring, when installed, compresses and deforms slightly into the free space within the groove to form a proper seal. O-rings are capable of sealing thousands of PSI pressure. O-rings are one of the most common seals used in machine design. O-rings are one of the most inexpensive seals and easy to make. O-rings are reliable and have simple mounting requirements. And o-ring is measured by its inner and outer diameters. O-rings are described by material composition and hardness. O-rings are typically available in standard sizes per industry standards. O-rings are available in both metric and inch sizes. O-ring selection is based on chemical compatibility, application temperature, sealing pressure, lubrication requirements, quality, quantity and cost.