Seiken Products ISO 9001 & 14001 Information Cup Seal Hose



Item Japanese Industrial Standard (JIS) Remarks
Dimension of rubber hose Inside diameter mm(in.) Outside diameter mm(in.) No. of braids 　
3.1(0.125) +- 0.2(0.008) 12.5(0.5) +- 0.5(0.02) 2
Metal end fitting It must be perfectly fitted, being free from the defects such as leakage and disconnection. 　
Quality
The brake hose shall comply with the following general conditions.
(1) To have high flexibility
(2) To be free from defects such as flaws, air bladders, etc.....
(3) To be symmetrical in the inside diameter, thickness of hose, thickness of the outer and inner rubber layers.
(4) Metal fitting and hose shall be connected firmly so that no defect such as leakage and pulling off from the fitting shall occur during the use.
(5) To be free from dust and other substances on the inner surface.
(6) No defects shall be caused by brake fluid.
　
Inside diameter after swaging the fitting Over 2.1 mm(0.08 in.) 　
Performance Fluid resistance No remarkable expansion nor other unusual change on the rubber surface. 　
Expansion of inside volume Max 0.79 cc at 105 kgf/cm2(1,500 psi) and 305 mm(1 ft) of free length. SEIKEN
0.4 cc
Pressure resistance To withstand for one minute at 200 kgf/cm2(3,000 psi) and over 2 minutes at 300 kgf/cm2(4,500 psi). Normal working
condition
7 to 15 kgf/cm2
Max. 120 kgf/cm2
Bursting strength Over 500 kgf/cm2 SEIKEN
Over 1,000 kgf/cm2
Tensile strength Over 150 kg(325 lb) 　
Whip test Over 35 hrs 　
Cold test No cracks or breakage. -40 deg.(-40 deg.F) X 70 hrs 　
Salt spray test No remarkable rust on the metal fitting against 24 hours exposure to salt water spray of 5% concentration at 35 deg.(95 deg.F) 　
Ozone degradation No cracks. Ozone density 50 pphm 40 deg.(104 deg.F) 70 hrs. 　
Indication of test Manufacturer's name or its designation and manufacturing year and month or its designation shall be indicated on the metal fitting. 　


MEIJI SANGYO COMPANY, Tokyo, Japan
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