FH Wipers (Dust Seals)

Function and Usage
FH wiper (dust seal) is a combination seal which are combined by a metal shell and TPU (polyurethane). Through the interference fit between the groove and the outer diameter of the metal ring, the dust ring can be reliably arranged in an axial open groove, which is used to prevent dust, dirt, sand particles, metal scraps and other impurities into the sealing system. The sealing lip which be directed at the media effects the sealing, and also, reduce the oil slick. The FH wiper has the advantages of strong wear resistance, good dust scraping effect, compression permanent deformation, and external mechanical shock resistance, suitable for excavators or loaders cylinders.Using together with the GS Type ladder seal will makes the sealing function more perfect.
 
Advantage
--Good effect of dust scarping
--Saving installation space
--Due to the adoption of the metal press fit method, the stability of the groove is good
--Wear resistant,compression permanent deformation
 
Material
Standard usage
Wiper Material: polyurethane  Our Material Code: P903
Metal Shell: Non alloy
 
Technical Data
The Standard FH Wiper is suitable for the hydraulic cylinders and valve.
Speed：≤2m/s
Working Temperature：-35℃ to +100℃ 
Working Medium: Hydraulic oil, emulsion, water
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: Opened
The FH wiper diameter is a little bit bigger, which ensure the tightness with the groove after installation. 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.
 
Example of the Order Part No. :
FH Wiper
Series No.: FH    Piston Rod Diameter: d=100mm 
Part Number: FH100114P903
FH: Series Number
100: Piston Rod Diameter
114: Groove Diameter
P903: Material Code

FH Wipers (Dust Seals)
d	D	H/L	H	Part No.	Remarks
20	32	6	9	FH020032P903	○
22	34	6	9	FH022034P903	○
25	37	6	9	FH025037P903	○
30	42	6	9	FH030042P903	○
32	44	7	10	FH032044P903	○
35	47	7	10	FH035047P903	○
40	52	7	10	FH040052P903	○
45	57	7	10	FH045057P903	○
50	62	7	10	FH050062P903	○
55	69	8	11	FH055069P903	○
56	70	8	11	FH056066P903	○
60	74	8	11	FH060074P903	○
65	79	8	11	FH065079P903	○
70	84	8	11	FH070084P903	○
75	89	8	11	FH075089P903	○
80	94	8	11	FH080094P903	●
85	99	8	11	FH085099P903	○
90	104	8	11	FH090104P903	○
95	109	8	11	FH095109P903	○
100	114	8	11	FH100114P903	○
105	121	9	12	FH105121P903	○
110	126	9	12	FH110126P903	○
115	131	9	12	FH115131P903	○
120	136	9	12	FH120136P903	○
125	141	9	12	FH125141P903	○
130	146	9	12	FH130146P903	●
135	155	10	14	FH135155P903	○
140	160	10	14	FH140160P903	○
150	170	10	14	FH150170P903	○
160	180	10	14	FH160180P903	○
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.