K40 PISTON 70X90X13

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.

More Information
น้ำหนัก/หน่วย (กก.)	0.1000
Application หรือ MEDIA ที่เหมาะกับการใช้งานใช้งาน	Heavy duty cylinders , scrap cutters and hydraulic jacks.
Temperature Range Min °C	-30
Temperature Range Max °C	100
Max Pressure	400 bar
หน่วย	PCE
หน่วยวัด	mm
แบรนด์	Kastas
I.D. เส้นผ่านศูนย์กลางวงใน	70
OD เส้นผ่านศูนย์กลางวงนอก(มม)	90
THK ความหนา	13
Type	K40
Part NO	K40-090 PU
วัสดุ(Material)	PU

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K40 PISTON 70X90X13

Hydraulic Piston Sealing Elements / K40

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