KY Piston Seals

Function and Usage
KY Piston Seal is a single action compact type lip seal. When it is static, the sealing effect is played by the interference compression of the two sealing lips.When it is dynamic, the system pressure is applied at the valley of the Y type seal, which increased the contact stress of the seal lip, cylinder bottom and groove bottom diameter, with the increase of pressure, the contact stress also increases correspondingly, which plays the role of dynamic sealing. KY Piston Seal is mainly used in heavy load running machinery and static pressure piston.
 
Advantage
--Good sealing effect, wear resistant
--Good ability to adapt the changes of the pressure
--Impact resistance, suitable for harsh conditions
-Simple design, and easy to install
--Standard components for standard mounting grooves
 
Material
Material: polyurethane  Our Material Code: P902
Back UP Material Code: T600
 
If the working condition is under high pressure, we suggest to use POM for the back up, Our Material Code: S805
 
Technical Data
Working Pressure: ≤40MPa
Speed: ≤0.5m/s  
Working Temperature：-35℃ to +110℃ 
Working Medium: Hydraulic oil
 
Clearance

Working Pressure /MPa		5	10	20	30	40
Maximum Clearance  E	d＜60mm	0.40	0.30	0.20	0.15	0.10
	d≥60mm	0.50	0.40	0.30	0.20	0.15

 
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: Both Closed and Opened (Open type groove is recommended for the limit diameter and limit cross section.)
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. :
KY Piston Seal
Series No.: KY   Cylinder Bore Diameter: d=100mm 
Part Number: KY100080P902
KY: Series Number
100: Cylinder Bore Diameter
080: Groove Diameter
P902: Material Code
 
 

KY Piston Seals
D	d	L	L1       (with back up)	H	C	Part No.	Back Up Part No.	Remarks
16	8	6.3	8.3	5.7	3	KY016008	DF8*16*2	○
16	10	6.3	8.3	5.7	3	KY016010	DF10*16*2	○
20	12	6.3	8.3	5.7	3	KY020012	DF12*20*2	●
24	16	6.3	8.3	5.7	3	KY024016	DF16*24*2	○
25	17	6.3	8.3	5.7	3	KY025017	DF17*25*2	○
25	18	5.6	7.6	5	3	KY025018	DF18*25*2	○
32	22	8	10	7.3	4	KY032022	DF22*32*2	●
32	24	6.3	8.3	5.7	4	KY032024	DF24*32*2	○
35	25	8	10	7.3	4	KY035025	DF25*35*2	○
40	30	8	11	7.3	4	KY040030A	DF30*40*3	○
40	30	7	10	6	4	KY040030B	DF30*40*3	●
40	32	6.3	8.3	5.7	4	KY040032	DF32*40*2	●
45	35	7	10	6	4	KY045035	DF35*45*3	●
50	40	8	11	7.3	4	KY050040A	DF40*50*3	●
50	40	7	10	6	4	KY050040B	DF40*50*3	●
50	42	6.3	8.3	5.7	4	KY050042	DF42*50*2	●
55	45	7	10	6	4	KY055045	DF45*55*3	●
56	41	12.5	15.5	11.4	4	KY056041	DF41*56*3	○
56	46	8	11	7.3	4	KY056046	DF46*56*3	●
60	50	8	11	7.3	4	KY060050A	DF50*60*3	●
60	50	7	10	6	4	KY060050B	DF50*60*3	●
63	53	8	11	7.3	4	KY063053A	DF53*63*3	●
63	53	7	10	6	4	KY063053B	DF53*63*3	●
65	55	8	11	7.3	4	KY065055	DF55*65*3	○
70	60	13	16	12	4	KY070060A	DF60*70*3	○
70	60	7	10	6	4	KY070060B	DF60*70*3	●
70	55	12.5	15.5	11.4	4	KY070055	DF55*70*3	○
75	63	9.5	12.5	8.6	4	KY075063	DF63*75*3	○
80	65	9.5	12.5	8.6	4	KY080065A	DF65*80*3	●
80	65	12.5	15.5	11.4	4	KY080065B	DF65*80*3	●
80	70	7.5	10.5	6.7	4	KY080070A	DF70*80*3	●
80	70	7	10	6	4	KY080070B	DF70*80*3	●
80	60	16	19	14.5	4	KY080060	DF60*80*3	○
90	75	12.5	15.5	11.4	6	KY090075	DF75*90*3	●
100	80	16	19	14.5	6	KY100080	DF80*100*3	●
100	85	12.5	15.5	11.4	6	KY100085A	DF85*100*3	●
100	85	10	13	9	6	KY100085B	DF85*100*3	●
100	90	7.5	10.5	6.7	6	KY100090	DF90*100*3	○
110	90	16.5	19.5	15	6	KY110090A	DF90*110*3	●
110	90	16	19	14.5	6	KY110090B	DF90*110*3	●
110	95	10	13	9	6	KY110095	DF95*110*3	●
115	98	16	19	14.5	6	KY115098	DF98*115*3	○
125	100	20	23	18.2	6	KY125100	DF100*125*3	●
125	105	16	19	14.5	6	KY125105	DF105*125*3	●
125	110	10.6	13.6	9.6	6	KY125110	DF110*125*3	●
130	110	16	19	14.5	6	KY130110	DF110*130*3	●
130	115	10	13	9	6	KY130115	DF115*130*3	●
140	120	16	19	14.5	6	KY140120	DF120*140*3	●
140	125	10	13	9	6	KY140125	DF125*140*3	●
140	115	20	23	18.2	6	KY140115	DF115*140*3	○
150	135	10	13	9	6	KY150135	DF135*150*3	○
160	135	20	23	18.2	6	KY160135	DF135*160*3	●
160	145	10	13	9	6	KY160145	DF145*160*3	●
160	140	16	19	14.5	6	KY160140	DF140*160*3	●
170	155	10	14	9	6	KY170155	DF155*170*4	●
180	155	20	24	18.2	6	KY180155	DF155*180*4	●
180	165	10	14	9	6	KY180160	DF165*180*4	●
180	150	20	24	18	6	KY180150	DF150*180*4	●
190	175	10	14	9	6	KY190175	DF175*190*4	●
200	175	20	24	18.2	7	KY200175	DF175*200*4	●
200	185	10.6	13.6	9.6	7	KY200185	DF185*200*3	○
220	200	16.5	20.5	15	7	KY220200	DF200*220*4	●
250	225	20	24	18.2	7	KY250225	DF225*250*4	●
250	230	16.5	20.5	15	7	KY250230	DF230*250*4	○
280	250	25	29	23	7	KY280250	DF250*280*4	○
320	290	22	26	20	8	KY320290A	DF290*320*4	●
320	290	25	29	23	8	KY320290B	DF290*320*4	○
350	320	23	27	21	8	KY350320	DF320*350*4	●
360	330	25	29	23	8	KY360330	DF330*360*4	○
400	360	32	36	30	10	KY400360	DF360*400*4	○
450	410	32	36	30	10	KY450410	DF410*450*4	○
500	460	32	36	30	10	KY500460	DF460*500*4	○
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.