Material: PU
Hardness:90-95 Shore A
Color: Green
Operation conditions
Pressure: ≤ 31.5Mpa
Temperature: -35~+100℃
Speed: ≤0.5m/s
Media: Hydraulic oils(mineral oil-based)
High sealing performance under low pressure
Not suitable for sealing singly
Easy installation
Common place：
1. USI seal and USH seal are all belonged to piston and rod seals.
2. The cross-section are the same, all the u type seal structure.
3. The manufacture standard is the same.
Difference:
1.USI seal is PU material while the USH seal is the NBR material.
2.The pressure resistance properties are different, the USI has a stronger pressure resistance.
3.USH seal can be used both in hydraulic cylinder and pneumatic systems, but USI only can be used in hydraulic cylinder system.
4.The low temperature resistance of the USH seal ring is better than that of the USI seal ring
5.If the USH seal in viton material, it can withstand a high temperature of 200 degrees, and the USI sealing ring can only withstand a high temperature of 80 degrees.
ZHEJIANG YINGDEER SEALING PARTS CO.,LTD is a high - tech company , specializing in R&D, production and sales of polyurethane and rubber seals. It has been engaged in the seal industry for decade time . The company has inherited the experience in the field of seals, integrated into today's advanced CNC injection molding, rubber vulcanization hydraulic production equipment and sophisticated testing equipment . And established a professional production technical team, successfully developed for industrial hydraulic and pneumatic systems , injection molding machine and engineering machinery sealing products.The current products are favored and praised by users in China and abroad .