KWK Piston Seals

Function and Usage
KWK Piston Seal is a two way combination seal which are resistance to shock load, Low coefficient of friction, even after a long holding time, the friction force is still small. The slip ring of the KWK seal are made by special thermoplastic, under high pressure, high speed and large clearance, there are strong resistance to extrusion. The KWK piston seal uses Z type open design, it is easy to install, saving installation space, mainly used in high pressure hydraulic cylinder, such as excavator cylinders, loader cylinder, forklifts cylinder, bulldozers cylinders, and etc.
 
Advantage
--Good sealing effect, wear resistant
--Anti extrusion, compression deformation is small
--Impact resistance, suitable for harsh conditions
--Standard components for standard mounting grooves
 
Material
Sealing Body Material: Thermoplastic   Our Material Code: M900
Elestomer Material: Nitrile Rubber (NBR)   Our Material Code: N802
Combination Code: M900N
 
If the working condition is under low temperature, we suggest to use low temperature resistance Nitrile Rubber (NBR) for the sealing body, Our Material Code: NV705, Combination Code: M900NV
 
Technical Data
Working Pressure: ≤60MPa
Speed: ≤1m/s  
Working Temperature：-45℃ to +120℃ 
Working Medium: Mineral hydraulic oil,fire resistant hydraulic oil, water and etc.
Tips: Limit value of the above data, can not be used at the same time. The maximum working pressure depends on the type of material, the pressure, the temperature, the gap, and etc.. In actual usage, due to the mutual influence of working parameters, the maximum value setting is lower.
 
Installation
Groove: Closed
In order to avoid the damage of the seals, during the installation, the seals should be leave away with the shape edge of the parts and tools. The sharp edges and burr in the installation area of the seal must be removed. If the sealing surface need to through the oil hole, angle of chamfer processing to the oil hole must be done.
 
Example of the Order Part No. :
KWK Piston Seal
Series No.: KWK   Cylinder Bore Diameter: d=100mm 
Part Number: KWK100084M900N
KWK: Series Number
100: Cylinder Bore Diameter
084: Groove Diameter
M900N: Material Code
 

KWK Piston Seals
D	d	D1	L	C	Part No.	Remarks
40	26.3	39.2	5.8	7	KWK040026	○
40	29	39.3	4.2	7	KWK040029	○
50	39	49.3	4.2	7	KWK050039	●
60	41.7	59.2	7	7	KWK060041	●
60	49	59.3	4.2	7	KWK060049	●
63	44.7	62.2	7	7	KWK063044	●
63	47.5	62	6.3	7	KWK063047	●
70	51.7	69.2	7	7	KWK070051	●
70	58	69.3	6.3	7	KWK070058	●
70	59	69.3	4.2	7	KWK070059	○
75	54	74.2	8	7	KWK075054	●
80	64.5	79	6.3	10	KWK080064	●
80	59	79	8	10	KWK080059	●
85	64	84	8	10	KWK085064	●
90	69	89	8	10	KWK090069	●
95	74	94	8	10	KWK095074	●
100	84.5	99	6.3	10	KWK100084	●
100	79	99	8	10	KWK100079	●
105	84	103.8	8	10	KWK105084	○
110	89	108.8	8	10	KWK110089	●
110	94.5	109	6.3	10	KWK110094	●
115	94	113.8	8	10	KWK115094	○
120	99	118.3	8	10	KWK120099	●
125	109.5	124	6.3	10	KWK125109	●
125	104	123.8	8	10	KWK125104	●
130	109	128.8	8	10	KWK130109	●
135	119.5	134	6.3	12	KWK135119	○
140	119	138.8	8	12	KWK140119	●
145	124	143.8	8	12	KWK145124	○
150	129	148.8	8	12	KWK150129	●
160	139	158.8	8	12	KWK160139	●
170	149	168.8	8	12	KWK170149	●
180	159	178.8	8	12	KWK180159	●
190	169	188.8	8	12	KWK190169	○
200	179	198.8	8	12	KWK200179	●
220	199	218.4	8	12	KWK220199	●
250	229	248.4	8	12	KWK250229	○
280	255.5	278.4	8	12	KWK280255	●
300	272	297.8	9.5	12	KWK300272	○
320	292	317.8	9.5	15	KWK320292	○
330	302	327.8	9.5	15	KWK330302	○
Notice: 1. “●” means the seal has existing mould; 2. “○” means no existing mould, but can provide the turning type seals. If any special requirements of the materials and sizes, please contact with us.