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	Z7 is a single U-shaped seal with the guide surface as one of the single-acting pneumatic piston seal. This design has the following advantages:
 
	• No metal contact between the piston and cylinder to prevent friction, especially for light metal and plastic cylinders.
 
	• By optimizing the geometry of the sealing lip to keep lubricant film, and a suitable choice of materials, it is running smoothly.
 
	• for oil-free dry air when, after initial lubrication can provide a longer service life.
 
	• Z7 Z5 can also be used to install the double-acting piston groove, in order to optimize the piston stroke, the piston should be designed according to the left side of the legend.
 
	• Easy to assemble in one-piece piston.
 
	Since Z7 cross-sectional geometry, should be avoided with Lateral load condition in.
 
	Applications
 
	Working Pressure: 16bar
 
	Working temperature: -30 ℃ to + 80 ℃
 
	Surface speed: 1m / s
 
	Medium: lubricated by air and after initial lubricating oil-free dry air.
 
	Material
 
	Standard materials:
 
	        N3578, nitrile rubber, Shore hardness of about 75 A
 
	Temperature materials:
 
	        N8602, nitrile rubber, Shore hardness of about 70 A
 
	High Temperature Materials:
 
	        V8550, fluorine rubber, a hardness of about Shore 80 A
 
	Installation
 
	Z7 series pneumatic piston seals can be easily mounted on the integral piston by stretching.
 
	Make sure all edges are deburring, to avoid damaging the seal.
 
	For special requirements (temperature, speed, for liquid water HFA, HFB liquid other media), please contact our service department in order to recommend to you the appropriate materials and structures.
 
	The above data are in standard materials and standard media measured, the specific temperature range required depending on the application conditions.
 
	   Order No. D * d * H
 
	Z71610N3578     16*10*8
 
	Z71812N3578     18*12*8
 
	Z72014N3578     20*14*8
 
	Z72518N3578     25*18*9
 
	Z72822N3578     28*22*8
 
	Z73023N3578     30*23*9
 
	Z73225N3578     32*25*9
 
	Z73528N3578     35*28*9
 
	Z74033N3578     40*33*9
 
	Z74538N3578     45*38*9
 
	Z75043N3578     50*43*9
 
	Z75446N3578     54*46*10
 
	Z76353N3578     63*53*13
 
	Z76356N3578     63*56*9
 
	Z77007N3578     70*62*10
 
	Z78070N3578     80*70*14
 
	Z78067N3578     80*72*10
 
	Z7A088N3578     100*88*16.5
 
	Z7A089N3578     100*90*12
 
	 
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