Y-Ring Seals | Hydraulic & Pneumatic Reciprocating Seals
Standard Profiles & Custom Sizes | NBR, FKM,HNBR & PU
Y-Ring Seals are lip-type seals with a Y-shaped cross-section, designed primarily for reciprocating sealing applications in hydraulic and pneumatic systems. Their flexible sealing lips provide reliable sealing performance and pressure-energized sealing under operating conditions.
Key Features
- Reliable sealing for reciprocating applications
- Pressure-energized sealing effect
- Low friction and smooth movement
- Good wear resistance
- Simple installation and compact design
- Available in standard and custom dimensions
- Suitable for hydraulic and pneumatic equipment
Common Materials
| Material | Typical Hardness | Key Advantages | Typical Applications |
|---|---|---|---|
| NBR | 80 – 90 Shore A | Excellent oil resistance, cost-effective | Hydraulic oil, pneumatic systems |
| FKM | 75 – 90 Shore A | High-temperature and chemical resistance | Fuel, automotive, chemical equipment |
| PU / TPU | 85 – 95 Shore A | Excellent wear and extrusion resistance | High-pressure hydraulic cylinders |
| FVMQ | 70 – 90 Shore A | Good fuel, temperature and low-temperature resistance | Aerospace and specialized applications |
Actual temperature, pressure and speed ratings depend on the compound, seal profile, gland design, medium and operating conditions.
Typical Applications
- Hydraulic Cylinders
- Pneumatic Cylinders
- Rod Sealing
- Piston Sealing
- Construction Machinery
- Mobile Hydraulics
- Industrial Machinery
- Agricultural Equipment
- Material Handling Equipment
- Oil & Gas Equipment
Pressure & Operating Conditions
Y-Ring performance varies significantly between different profiles and materials. For high-pressure applications, the seal design, extrusion gap and backup-ring configuration should be evaluated together.
Typical selection factors:
Pressure → Temperature → Speed → Medium → Material → Hardness → Groove Design → Extrusion Gap
