U-shaped seal material/material:
Material: L - 98
Specific gravity (ASTM D792) : 1.20
Hardness (ASTM D2240) : 95-2
Tensile strength (ASTM D412) : 588
100% modulus (ASTM D412) : 123
300% modulus (ASTM D412) : 229
22 hours of 70 ℃ compression deformation rate (ASTM D395) : 23
22 hours of 100 ℃ compression deformation rate (ASTM D395) : 35
U working conditions of the oil seal:
The maximum working pressure: 40 mpa
Work speed: 0.03-1.0 m/SEC
Working temperature: - 20 ℃ -- 100 ℃
U type oil seal oil resistance:
Test oil: resistance to abrasion of hydraulic oil
Material: L - 98
Test temperature (℃) : 100/120
100/100 test time (hour)
Hardness range (Shore A) : - 1 / - 1
Tensile strength variation (%) : - 5 / - 29
Volume change (%) : + / 0.08 + 0.1

Forever Manufacturing and Trade Co., Limited. is an integrated enterprise covering manufacturing, domestic trading and export business. It’s always been our obligation to constantly seek our way to prompt the existing business, and pay close attention to the sectoral momentum, thus to build business all over the world, which will allow us to make greatest value for both clients and ourselves.

Established in 2009, Forever Manufacturing and Trade Co., Limited locates in Tianjin Xiqing, Hightech district, supplying domestic markets and trading companies. The abundant management experience, fully certified and traceable raw material, professional technical design, and rigorous manufacturing control had led us to one totally trusted supplier on the hardware fastener manufacturing career.

Meanwhile, Forever Manufacturing and Trade Co.,Limited (FOR) is also a professional sales of rubber hose, plactis tube, valve, pump, flange, flow meter and other building materials enterprises. Our products and services involve the chemical, petrochemical, petroleum, the papermaking, mining, electricity, food, pharmaceutical, water supply and drainage, fire and other fields are widely used. We provide you with different medium, different pressure and different standards of products and engineering services.