33-99No. Mufu E Rd. Gulou District, Nanjing, China [email protected] | [email protected]
33-99No. Mufu E Rd. Gulou District, Nanjing, China [email protected] | [email protected]
Home / Products / Piston Seal
Item |
Specification |
Main Material |
High-quality Polyurethane (PU). PPDI modified PU is optional for tough working conditions |
Seal Type |
U-shaped lip, self-tightening |
Movement Type |
Reciprocating linear motion for hydraulic / pneumatic systems |
Groove Standard |
ISO 3601 / GB/T 15242 |
Temperature Range |
-30℃ ~ 120℃. It can stand 130℃ for a short time |
Working Pressure |
0~40 MPa. Use PTFE back-up ring if pressure > 20 MPa |
Reciprocating Speed |
≤ 0.5 m/s (normal use); ≤ 0.3 m/s (high pressure > 30 MPa) |
Applicable Media |
Mineral hydraulic oil, synthetic hydraulic oil, water-glycol, phosphate ester hydraulic oil, industrial grease, etc |
Main Material Features |
Oil-resistant, wear-resistant, high tear resistance, hydrolysis-resistant, low compression set, self-tightening sealing compensation |
Medium Temperature |
Same as the seal temperature range: -30℃ ~ 120℃ |
Model |
Applicable Parts |
Core Performance & Features |
Groove Fit |
Typical Applications |
UN |
Piston / piston rod (general use) |
Standard general type, single lip, self-tightening, easy to install, cost-effective |
ISO 3601 standard shallow groove |
Basic seals for engineering machinery, hydraulic stations, small hydraulic presses |
UPI |
Hydraulic cylinder piston (only) |
For piston use, double lip, anti-extrusion, anti-eccentric load, stable under high pressure |
ISO 3601 standard piston groove |
Pistons for injection molding machines, large hydraulic presses, forging equipment |
USI |
Hydraulic cylinder piston rod (only) |
For piston rod use, thick wear-resistant lip, anti-scour, anti-dust, anti-rolling lip |
ISO 3601 standard piston rod groove |
Piston rods for excavators, cranes, loaders, mining machinery |
U601 |
Piston / piston rod for high-precision systems |
Upgraded PU formula, low-friction lip, low resistance, low heat, good high-pressure performance |
High-precision hydraulic system standard groove |
High-precision CNC machines, automotive brake systems, servo hydraulic cylinders |
3. Installation and Usage Rules
4. Core Product Advantages
5. Applicable Conditions
This series is widely used in engineering machinery, metallurgy, plastic machinery, machine tools, mining machinery and automotive hydraulic systems.
It works well in dusty, humid, high-pressure and high-frequency reciprocating environments.
Not suitable for high-speed rotation or strong corrosive media (strong acid, strong alkali, strong solvent).
Welcome to HOVOO, a Chinese seal factory. Production of PU, Rubber and PTFE seals. The seals include O-ring, piston seal, rod seal, Gray ring and gas seal.
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