KA Piston Seals

Function and Usage
KA Piston Seal is a two way double action compact seal. It is consisted by a PTFE slip ring, an elastomer body and two high pressure back up rings. The initial surplus of the elastomer can satisfy the sealing performance under lower pressure and static; when the pressure is increasing, the elastomer pressurizes to the PTFE slip ring, and change the axial force of the system pressure to radial extrusion to ensure the stability of the dynamic seal; the back up ring is impact resistant, can prevents the slip ring to be extruded to the seal gap. KA Piston Seal is suitable for the piston of heavy load walking machine hydraulic cylinder.
 
Advantage
--Good sealing effect
-- wear resistant, long service life
--Anti extrusion, compression deformation is small
--Low friction coefficient under both dynamic and static, without creeping
--Simple design, easy to install
 
Material
Sealing Body Material: Filled PTFE   Our Material Code: T605
Elestomer Material: Nitrile Rubber (NBR)   Our Material Code: N802
Back Up Material: POM    Our Material Code: S805
Combination Code: N8TS
 
If the working condition is under low temperature, we suggest to use low temperature resistance Nitrile Rubber (NBR) for the elestomer , Our Material Code: NV705, Combination Code: NV7TS
 
If the working condition is under high temperature, we suggest to use FKM for the elestomer , Our Material Code: F800, Back Up we suggest to use PTFE, Our Material Code: T605, Combination Code: F8TT
 
 
Technical Data
Working Pressure: ≤50MPa
Speed: ≤1.5m/s  
Working Temperature：-40℃ to +120℃ 
Working Medium: petroleum base hydraulic oil, fire resistant hydraulic fluid, environmental safety hydraulic oil (Bio 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.
 
Example of the Order Part No. :
KA Piston Seal
Series No.: KA   Cylinder Bore Diameter: d=100mm 
Part Number: KA100085N8TS
KA: Series Number
100: Cylinder Bore Diameter
085: Groove Diameter
N8TS: Material Code
 

KA Piston Seals
D	d	d1	L	H	c	Part No.	Remarks
50	36	49.5	9	8.5	4	KA050036	●
55	41	54.5	9	8.5	4	KA055041	●
60	46	59.5	9	8.5	4	KA060046	○
63	48	62.5	11	10.5	4	KA063048	●
65	50	64.5	11	10.5	4	KA065050	●
70	55	69.5	11	10.5	4	KA070055	●
80	65	79.5	11	10.5	4	KA080065	●
85	70	84.5	11	10.5	4	KA085070	●
90	75	89.5	11	10.5	4	KA090075	●
95	80	94.5	11	10.5	4	KA095080	●
100	85	99.5	12.5	12	5	KA100085	●
105	90	104.5	12.5	12	5	KA105090	●
110	95	109.5	12.5	12	5	KA110095	●
115	100	114.5	12.5	12	5	KA115100	●
120	105	119.5	12.5	12	5	KA120105	●
125	102	124.5	16	15.5	6.5	KA125102	●
130	107	129.5	16	15.5	6.5	KA130107	●
135	112	134.5	16	15.5	6.5	KA135112	●
140	117	139.5	16	15.5	6.5	KA140117	●
150	127	149.5	16	15.5	6.5	KA150127	●
160	137	159.5	16	15.5	6.5	KA160137	●
170	147	169.5	16	15.5	6.5	KA170147	○
180	157	179.5	16	15.5	6.5	KA180157	●
185	162	184.5	16	15.5	6.5	KA185162	●
190	167	189.5	16	15.5	6.5	KA190167	○
200	177	199.5	16	15.5	6.5	KA200177	●
210	187	209.5	16	15.5	6.5	KA210187	●
225	202	224.5	16	15.5	6.5	KA225202	●
230	207	229.5	16	15.5	6.5	KA230207	○
240	217	239.5	16	15.5	6.5	KA240217	○
250	222	249.5	17.5	17	7.5	KA250222	●
260	232	259.5	17.5	17	7.5	KA260232	●
270	242	269.5	17.5	17	7.5	KA270242	○
280	252	279.5	17.5	17	7.5	KA280252	●
320	292	319.5	17.5	17	7.5	KA320292	●
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.