KV Piston Seals

Function and Usage
KV Piston Seal is combined by a set of V type rubber fabric ring, supporting ring and pressure ring. Usually it is 1+5+1 (1: pressure ring, 5: three V type rubber fabric rings and two V type rubber ring, 1: supporting ring) or 1+3+1 (1: pressure ring, 3: two type rubber fabric rings and one V type rubber ring, 1: supporting ring). In this compression type seal, the axial force exerted by the system pressure is transferred between each V type ring and the pressure is pressed on the surface of the cylinder. Because there are a number of sealing lips, so the KV Piston Seal has excellent sealing performance, compared with the monomer seal, it is not sensitive to the slight damage of the surface and the dirt in the medium. By adjusting the groove device, the best coordination of friction and sealing performance can be achieved, and the service life of the component can be effectively prolonged.
 
Advantage
--Refer to the different media and temperature range, can adjusted by choosing different material
-- With the stable structure, the pressure peak is not sensitive
--As the contact area is long and there are several sealing lips, so there is an excellent sealing performance
--Easy to install and replace
 
Material
Supporting Ring and V Type Reinforced Fabric Ring Material: Nitrile Rubber + Cloth  Our Material Code: BN500
V Type Rubber Ring Material:Nitrile Rubber (NBR)   Our Material Code: N800
Pressure Ring:POM   Our Material Code: S801
Combination Code: BNSN
 
If the working condition is under high temperature or chemical resistant medium, we suggest to use FKM (Fluoro Rubber) for the V type ring, Our Material Code: F800, supporting Ring and V type rubber fabric ring we suggest to use Fabric FKM, Our Material Code: BF500. Pressure Ring we suggest to use PTFE, Our Material Code: T605. Combination Code: BFTF
 
Technical Data
The Standard KV Piston Seal is mainly used for plunger, piston of the press machine, cylinder, valve shaft and seal of valve spool.
Working Pressure: ≤60MPa
Speed: ≤0.5m/s  
Working Temperature：-40℃ to +200℃ (Refer to the different material of the seal)
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: Opened
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. Each component should be installed one by one according to the order, apply grease to facilitate assembly.
 
Example of the Order Part No. :
KV Piston Seal
Series No.: KV   Cylinder Bore Diameter: d=100mm 
Part Number: KV100080BNSN
KV: Series Number
100: Cylinder Bore Diameter
080: Groove Diameter
BNSN: Material Code
 

KV Piston Seals
D	d	L	C	Part No.	Remarks
40	25	11.5	7	KV040025	●
42	27	11.5	7	KV042027	●
45	30	11.5	7	KV045030	●
50	35	11.5	7	KV050035	●
55	40	11.5	7	KV055040	●
56	41	11.5	7	KV056061	●
60	45	11.5	7	KV060045	●
63	48	13	7	KV063048	●
70	50	15.2	7	KV070050	●
80	60	15.2	10	KV080060	●
90	70	21.2	10	KV090070	●
100	80	21.2	10	KV100080	●
110	90	21.2	10	KV110090	●
115	95	21.2	10	KV115095	●
125	100	25.8	10	KV125100	●
140	115	25.8	12	KV140115	●
150	120	29	12	KV150120	●
160	130	29	12	KV160130	●
180	150	31.5	12	KV180150	●
200	170	33.5	12	KV200170	●
225	195	33.5	12	KV225195	●
250	220	33.5	12	KV250220	●
275	245	33.5	12	KV275245	●
300	270	33.5	12	KV300270	●
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.