ZKF Rotary Seals

Function and Usage
ZKF Rotary Seal is composed of a high wear resistance, low friction filled PTFE slip ring, and a rubber square ring. The square  ring provides preload, compensate to the wear of the slip ring. Since the contact area of the square ring and slip ring increases, can effectively prevent the slip ring to be rotated with the Piston Rod or Shaft, at the same time, prevent the seals to be rolled and twisted. According to the slip ring section size, processing one or two annular grooves in the sealing surface to form a lubricating oil cavity, further reduces the friction force, enhances the sealing surface specific pressure, achieves the good sealing effect. The standard ZKF rotary seals are used to the sealing condition which do have rotate or swing rods, shafts, pins, swivel joints, and etc.
 
Advantage
--Small frictional force
--Start no creep, no stick
--Wear resistance, good dimensional stability
--Simple trench, easy to install
--With a lubrication chamber
 
Material
Slip Ring Material: Filled PTFE   Our Material Code: T605
Elastomer Material: Nitrile Rubber (NBR)   Our Material Code: N800  
Combination Code: T605N
 
If the working condition is under high temperature or chemical resistant medium, we suggest to use FKM for the elestomer , Our Material Code: F800. Combination Code: T605F
 
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: T605NV
 
Technical Data
Working Pressure: ≤40MPa
Speed: ≤2m/s  
Working Temperature: Nitrile Rubber (NBR)   -30℃ to +120℃ 
                   FKM  -20℃ to +200℃ 
When the working temperature is greater than 60℃, the continuous working pressure must be reduced.
Working Medium: Hydraulic oil, emulsion, water, air, 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: 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. :
ZKF Rotary Seal
Series No.: ZKF  Cylinder Diameter: D=100mm 
Part Number: ZKF10004T605N
ZKF : Series Number
100: Cylinder Diameter
04: Groove Diameter
T605N: Material Code
 

Series No.	Recommended Standard  Cylinder Bore Diameter Range     d(mm)		Groove Diameter  d(mm)	Groove Width  L(mm)	Chamfer radius r	Maximum Clearance     E(mm)
	≥	≤				25MPa	40MPa
ZKF	10	39	D-4.9	2.2	0.40	0.15	0.10
	40	79	D-7.5	3.2	0.60	0.15	0.10
	80	134	D-11	4.2	1.00	0.15	0.10
	135	329	D-15.5	6.3	1.30	0.15	0.10

When the pressure is more than 40MPa, it is recommended to reduce the extrusion gap, or please contact with us for the best sealing solution.
 

ZKF Rotary Seal
D	d	L	C	Part No.
10	5.1	2.2	4	ZKF01002
12	7.1	2.2	4	ZKF01202
14	9.1	2.2	4	ZKF01402
15	10.1	2.2	4	ZKF01502
16	11.1	2.2	4	ZKF01602
18	13.1	2.2	4	ZKF01802
20	15.1	2.2	4	ZKF02002
22	17.1	2.2	4	ZKF02202
25	20.1	2.2	4	ZKF02502
28	23.1	2.2	4	ZKF02802
30	25.1	2.2	6	ZKF03002
32	27.1	2.2	6	ZKF03202
35	30.1	2.2	6	ZKF03502
38	33.1	2.2	6	ZKF03802
40	32.5	3.2	6	ZKF04003
42	34.5	3.2	6	ZKF04203
45	37.5	3.2	6	ZKF04503
48	40.5	3.2	6	ZKF04803
50	42.5	3.2	6	ZKF05003
55	47.5	3.2	6	ZKF05503
60	52.5	3.2	6	ZKF06003
63	55.5	3.2	6	ZKF06303
70	62.5	3.2	6	ZKF07003
75	67.5	3.2	6	ZKF07503
80	69	4.2	8	ZKF08004
85	74	4.2	8	KZF08504
90	79	4.2	8	ZKF09004
95	84	4.2	8	ZKF09504
100	89	4.2	8	ZKF10004
105	94	4.2	8	ZKF10504
110	99	4.2	8	ZKF11004
115	104	4.2	8	ZKF11504
120	109	4.2	8	ZKF12004
125	114	4.2	8	ZKF12504
130	119	4.2	8	ZKF13004
135	119.5	6.3	10	ZKF13506
140	124.5	6.3	10	ZKF14006
150	134.5	6.3	10	ZKF15006
160	144.5	6.3	10	ZKF16006
170	154.5	6.3	10	ZKF17006
180	164.5	6.3	10	ZKF18006
190	174.5	6.3	10	ZKF19006
200	184.5	6.3	10	ZKF20006
210	194.5	6.3	10	ZKF21006
220	204.5	6.3	10	ZKF22006
240	224.5	6.3	10	ZKF24006
250	234.5	6.3	10	ZKF25006
260	244.5	6.3	10	ZKF26006
270	254.5	6.3	10	ZKF27006
280	264.5	6.3	10	ZKF28006
300	284.5	6.3	10	ZKF30006
320	304.5	6.3	10	ZKF32006
If any special requirements of the materials and sizes, please contact with us.