GBU Rod Seals

Function and Usage
GBU Rod Seal is a compact seal which are made of high strength polyurethane used together with the back up ring. The special structure can adopt to working under most of the harsh working condition. Under extreme conditions, the impulse pressure of the cylinder can reach to 100MPa, and the GBU used as a buffer seal can separate the main seal from the load.. With the using of the back up ring, the resistance to extrusion is more perfect.
 
Advantage
--Wear resistance, long service life
--Impact resistance, pressure peak resistance
--Anti extrusion
--Compression deformation is small
--Suitable for harsh working conditions
-- Easy to install
 
Material
Standard usage
Sealing Body Material: polyurethane  Our Material Code: P903
Back Up Material:POM  Our Material Code: S805
 
Technical Data
The Standard GBU Rod Seal is mainly used for the hydraulic cylinder for walking equipment.
Working Pressure: ≤50MPa (Pressure peak value is 100MPa)
Speed: ≤0.5m/s  
Working Temperature：-35℃ to +110℃ 
Working Medium: Mineral hydraulic oil, emulsion, water and other media
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. :
GBU Rod Seal
Series No.: GBU    Piston Rod Diameter: d=100mm 
Part Number: GBU100115P903
GBU: Series Number
100: Piston Rod Diameter
115: Groove Diameter
P903: Material Code
 

GBU Rod Seals
d	D	L	H	d1	Part No.	Remarks
32	43	4	4.2	32.4	GBU032043	○
50	65.1	6.1	6.3	50.5	GBU050065	○
55	70	8.5	9.5	55.5	GBU055070	○
56	71	8.5	9.5	56.5	GBU056071	○
60	75.1	6.1	6.3	60.5	GBU060075	○
60	75	8.5	9.5	60.5	GBU065075A	○
63	78.1	6.1	6.3	63.5	GBU063078	●
65	80.5	6.1	6.3	65.4	GBU065080	○
70	85	8.5	9.5	70.5	GBU070085	○
70	85.1	6.1	6.3	70.5	GBU070085A	○
70	85.5	6.1	6.3	70.5	GBU070085B	○
75	90	8.5	9.5	75.5	GBU075090	●
75	90.5	6.1	6.3	85.4	GBU075090A	○
80	95	8.5	9.5	80.5	GBU080095	○
80	95.1	6.1	6.3	80.5	GBU080095A	○
80	95.5	6.1	6.3	80.4	GBU080095B	○
85	100	8.5	9.5	85.4	GBU085100	○
85	100.5	6.1	6.3	85.4	GBU085100A	○
90	105	8.5	9.5	90.5	GBU090105	○
90	105.5	6.1	6.3	90.4	GBU090105A	○
95	110.5	6.1	6.3	95.4	GBU095110	○
100	115.5	6.1	6.3	100.4	GBU100115	○
100	120	11.4	12.5	100.6	GBU100120	○
110	125.5	6.1	6.3	110.4	GBU110125	○
110	130	11.4	12.5	110.6	GBU110130	○
120	140	11.4	12.5	120.6	GBU1201402	○
130	150	14.5	16	130.6	GBU130150	●
140	160	14.5	16	140.6	GBU140160	●
150	170	14.5	16	150.6	GBU150170	○
160	180	14.5	16	160.6	GBU160180	●
170	190	10.3	11	170.6	GBU170190	○
180	205	14.5	16	180.8	GBU180205	○
200	225	14.5	16	200.8	GBU200225	○
220	250	18.2	20	220.8	GBU220250	○
250	280	18.2	20	250.8	GBU250280	○
260	290	18.2	20	260.8	GBU260290	○
280	310	18.2	20	280.8	GBU280310	○
300	330	18.2	20	300.8	GBU300330	○
320	350	18.2	20	320.8	GBU320350	○
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.