Professional O-Ring and Oil Seal Manufacturer, Sealing Solution Supplier Since 2008.
MPS Hole-Shaft Seal: X-Ring Enhanced for Hydraulic/Pneumatic Use
Fuses PU lip & NBR X-ring: no creep, better extrusion resistance for compact cylinders.
A versatile sealing solution for hydraulic/pneumatic systems, the MPS seal integrates a durable PU lip and elastic NBR X-ring. Its 4-lip X-ring design ensures low friction, no creep, and strong extrusion resistance, while fitting single/double-acting cylinders. Operating at -35℃ to +80℃ (speed ≤0.5m/s) and handling up to 31.5MPa (CPU variant), it suits compact cylinders and heavy machinery. Easy to install, it delivers reliable sealing across low-to-high pressure, cutting wear and boosting system longevity—ideal for industrial, agricultural, and earth-moving equipment.
5.0
design customization
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Please fill out the form below to request a quote or to request more information about us. please be as detailed as possible in your message, and we will get back to you as soon as possible with a response. we're ready to start working on your new project, contact us now to get started.
1. Product Advantages
Dual-Material Synergy: Combines wear-resistant polyurethane (PU) lip seal with high-elastic nitrile rubber (NBR) X-ring, ensuring no creep at low pressure and strong extrusion resistance at high pressure (up to 31.5MPa for CPU variant).
Low-Friction & Long-Lasting: 4-lip X-ring design reduces contact stress, minimizing friction and wear; self-lubricating groove structure extends seal and system service life.
Easy Installation: Flexible sizing adapts to both hole and shaft sealing, eliminating complex fitting adjustments for quick assembly.
2. Working Principle
The MPS seal achieves sealing through pre-compression + pressure activation:
Initial seal: Radial/axial pre-compression of the X-ring creates baseline contact stress with mating surfaces.
Pressure enhancement: As system pressure rises, the X-ring deforms, increasing contact stress to block fluid leakage—ideal for dynamic (reciprocating/rotary) and static applications.
3. Product Details
Core Components: PU lip (wear-resistant), NBR X-ring (elasticity), precision-machined edges (no flash impact).
Performance Specs: Temperature range -35℃ to +80℃; speed ≤0.5m/s; compatible with mineral oil, water-glycol, and common hydraulic/pneumatic fluids.
Sizing Flexibility: Customizable diameters for compact cylinders and heavy machinery shafts/holes.
4. Application Range
Hydraulic Systems: Heavy agricultural machinery, earth-moving equipment, single/double-acting cylinders.
Pneumatic Systems: Compact short-stroke cylinders, industrial automation pneumatic components.
Sealing Types: Piston seals, rod seals (dynamic); flange/cover seals (static).
5. FAQ
Q1: Can the MPS seal replace single O-ring seals?
A1: Yes—its X-ring design offers better anti-twist performance and wider pressure adaptability than standard O-rings.
Q2: What maintenance is required?
A2: Minimal maintenance; avoid contact with sharp edges during installation and use compatible fluids (refer to Forever Seals’ fluid compatibility chart).
6. Company Selling Points (Forever Seals)
15+ Years of Expertise: Specialized in high-performance sealing solutions for industrial and heavy machinery.
Quality Assurance: All MPS seals pass 3-stage testing (pressure, temperature, durability) to meet ISO 9001 standards.
Custom Support: Fast turnaround for custom sizes and material modifications (e.g., Viton X-rings for high-temperature needs).
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