K40 PISTON HYDRAULIC SEAL

K40 is a two piece single acting piston seal which consists of asymmetrical profile with pressure relieving grooves and a thermoplastic back-up ring.

PRODUCT ADVANTAGES
• Superior static and dynamic sealing effect
• Improved sealing gap due to the active back-up ring
• Relief grooves against dynamic pressure
• Easy assembly into the closed groove
• Simple groove design
• Highly wear resistant

APPLICATION
Heavy duty cylinders , scrap cutters and hydraulic jacks.

MATERIAL		CODE
PU	92 SHORE A	PU^₉₄₀₁
POM		PM^₉₉₀₁

OPERATING CONDITIONS

MEDIA

Mineral oils(DIN 51524)

HFA and HFB

HFC

TEMPERATURE

-30°C +100°C

+5°C +50°C

-30°C +40°C

PRESSURE

≤400 Bar

SPEED

≤0.5 m/sn

Note: The above data are maximum values and cannot be used at the same time.

SURFACE ROUGHNESS	Ra	Rmax
Sliding Surface ØD	≤0.4 μm	≤3.2 μm
Groove Base Ød	≤1.6 μm	≤10 μm
Groove Flanks B	≤3.2 μm	≤16 μm
Note: It is recommended to have 50% to 90% of the working surface material contact area value.
INSTALLATION Easily assembled into one piece piston. It is very important that the assembly tools must be of soft material and have no sharp edges. Before installation all individual parts of the seal must be oiled with system oil. NOTESThe permissible sealing gap values of K40 piston seal is given in the below table.

PERMISSIBLE SEALING GAP

Pressure (Bar)	Smax (mm)
100	1.0
150	0.8
250	0.7
400	0.6

Note: The largest sealing gap value occurring on the non-pressurized side of the seal does have a vital importance for the function of the seal and in this respect it is quite important to use the S value lower than the above indicated numbers.


ชื่อสินค้า	ราคา	จำนวน	ID	OD	Thickness	Thickness2	Type	Part NO	Material
K40 PISTON 70X90X13	฿182.00		70	90	13	-	K40	K40-090 PU	PU
K40 PISTON 80X100X13	฿196.00		80	100	13	-	K40	K40-100 PU	PU
K40 PISTON 120X150X13	฿409.00		120	150	19	-	K40	K40-150 PU	PU
K40 PISTON 60X80X13	฿171.00		60	80	13	-	K40	K40-080 PU	NBR

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K40 PISTON HYDRAULIC SEAL

Hydraulic Piston Sealing Elements / K40

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