K23 HYDRAULIC PISTON SEAL

K23 is a single acting piston seal designed to have outer lip shorter than the inner lip in order to be used for piston applications.

PRODUCT ADVANTAGES
• Superior static and dynamic sealing effect
• Wide range of dimensions
• Easy assembly into closed grooves
• Simple groove design
• Economical sealing solution

APPLICATION
Construction machinery , fork-lift trucks , injection moulding machines , agricultural machinery , loading platforms and standard cylinders.

MATERIAL		CODE
NBR	90 SHORE A	NB^₉₀₀₁
PU	92 SHORE A	PU^₉₂₀₁

OPERATING CONDITIONS
NBR
MEDIA	Mineral oils(DIN 51524)	HFA and HFB	HFC
TEMPERATURE	-30°C +105°C	+5°C +60°C	-30°C +60°C
PRESSURE	≤150 Bar	≤150 Bar	≤150 Bar
SPEED	≤0.5 m/sn	≤0.5 m/sn	≤0.5 m/sn
PU
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	≤400 Bar	≤400 Bar
SPEED	≤0.5 m/sn	≤0.5 m/sn	≤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 closed grooves according to the minimum diameter values that are given in the below table. Open grooves or special assembly tools should be used for the values that are outside this table. It is very important that the assembly tools must be of soft material and have no sharp edges. Before installation the sealing element must be oiled with system oil.

MINUMUM DIAMETER VALUES FOR CLOSED TYPE OF GROOVES
(D-d)/2 (mm)	4	5	6	7.7	10	12.5	15
Dmin	25	30	40	50	80	100	105

NOTES
For special applications that require high temperatures , K23 can be produced in FKM material. The permissible sealing gap values of K23 piston seal is given in the below table.

PERMISSIBLE SEALING GAP
NBR	Smax (mm)
t=(D-d)/2(mm)	50 Bar	100 Bar	150 Bar
t≤5	0.40	0.20	0.10
t>5	0.45	0.25	0.15
&n bsp; PU	Smax (mm)
t=(D-d)/2(mm)	150 Bar	250 Bar	400 Bar
t≤5	0.30	0.20	0.15
t>5	0.35	0.25	0.20

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
วัสดุ(Material)	NBR, PU


ชื่อสินค้า	ราคา	จำนวน	ID	OD	Thickness	Thickness2	Type	Part NO	Material
K23 U-RING 50X38X6.50 PU	฿90.00		38	50	6.5	-	K23 U-RING	K23-050/5 PU	PU
K23 PISTON 7X12X2.55 NBR	฿37.00		7	12	2.55	-	K23 PISTON	K23-012	NBR
K23 PISTON 180X160X12 PU	฿325.00		160	180	12	-	K23 PISTON	K23-180/3 PU	PU

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K23 HYDRAULIC PISTON SEAL

Hydraulic Piston Sealing Elements / K23

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