Material: PTFE

Product size: specifications, thickness, can be customized according to demand, non-standard customization

Color: multiple colors are available

Product features:

High and low temperature resistance, corrosion resistance, wear resistance, wide range of use;

Good chemical properties, heat resistance, oil resistance, friction resistance, good sealing.

Application scope:

Mainly used in petroleum, chemical, medical, electronics, electric power, mining, metallurgy, shipbuilding and other industries.

Machinery is inseparable from the cylinder, the cylinder is inseparable from the seal. A common seal is a seal ring, also known as an oil seal, which acts as a barrier to prevent oil from spilling out or passing through.

The sealing rings commonly used in hydraulic cylinders are as follows: dustproof ring, piston rod seal, buffer seal, guide support ring, end cover seal, piston seal.

Dustproof ring is installed outside the end cover of the hydraulic cylinder to prevent external pollutants from entering the hydraulic cylinder. According to the installation can be divided into plug type and crimping type.

Dust rings are common. As the name implies, the dust-proof ring is stuck in the groove of the inner wall of the end cover, which is suitable for not too harsh environmental conditions. The material of the suction ring is usually polyurethane, and the structure has many changes, such as H and K sections with double lip structure, but they are inseparable.

Push-in dustproof ring is suitable for harsh and heavy load conditions. Instead of being stuck in the tank, it is coated with metal to strengthen the polyurethane material and pressed into the hydraulic cylinder end cap. There are many kinds of pressure into the dust ring, also divided into single lip and double lip type.

Piston rod seal, also known as u-shaped cup, is the main piston rod seal, installed in the hydraulic cylinder end cover, to prevent hydraulic oil leakage. The piston rod seal ring is made of polyurethane or nitrile rubber. In some cases, it needs to be used with a support ring (also known as a retaining ring). The support ring is used to prevent the sealing ring from being squeezed out of shape under pressure. There are also many variations of piston rod seals.

The buffer seal acts as an auxiliary piston rod seal to protect the piston rod in the event of a sudden increase in system pressure. There are three common types of buffer seals. Type A is A single - piece seal made of polyurethane. Models B and C are two pieces designed to prevent seal squeezing and allow the seal to withstand higher pressures.

The guide support ring is installed on the end cover of the hydraulic cylinder and piston to support the piston rod and piston, guide the piston in a straight line, and prevent metal-to-metal contact. Materials are plastic, copper - plated ptfe and so on.

End cover sealing ring is used to seal the end cover and cylinder wall. It is a static seal that prevents hydraulic oil leakage from the gap between the end cap and the cylinder wall. It usually consists of a nitrile butadiene rubber O-ring and a support ring (fixing ring).

The piston seal ring is used to isolate the two chambers of the hydraulic cylinder and is the main seal in the hydraulic cylinder. Usually two - piece, outer ring for polytetrafluoroethylene or nylon, inner ring for nitrile rubber. There are also many variants, including the use of bronze coated ptfe etc. Polyurethane U-cups are also available on single-acting cylinders.