- Description
- 264 pcs PU O-rings
- OEM-equivalent sizing
- Breakdown-focused assortment
Polyurethane O-Rings — Description & Applications in Earthmoving Equipment
Polyurethane O-rings are widely used in earthmoving and heavy-equipment hydraulic systems due to their exceptional resistance to abrasion, tearing, and extrusion. Their robust mechanical strength makes them ideal for high-pressure sealing environments where standard elastomers may fail prematurely.
Key Performance Benefits
-
High Abrasion Resistance: Handles aggressive sliding, pulsation, and vibration commonly found in hydraulic cylinders, valves, and pumps.
-
Excellent Tear Strength: Withstands mechanical shock and heavy load impacts typical in excavation, loading, and demolition operations.
-
Superior Extrusion Resistance: Ideal for high-pressure sealing where O-rings are prone to being forced into clearances.
-
Good Oil and Fuel Compatibility: Suitable for systems using hydraulic oils, diesel, and common lubricants.
-
Broad Operating Temperature Range: Maintains performance across the hot and cold extremes encountered in field conditions.
Common Applications in Earthmoving Machinery
Polyurethane O-rings are commonly installed in:
-
Hydraulic cylinder glands and pistons — high-pressure dynamic sealing
-
Hydraulic pumps and motors — resistance to pulsation and abrasive conditions
-
Valve blocks and control manifolds — extrusion-resistant sealing
-
Swing, travel, and implement systems — areas exposed to vibration or sudden load spikes
-
Suspension and steering components — where long service life and tear resistance are critical
-
Seals exposed to contaminated hydraulic fluids — polyurethane tolerates contamination better than many elastomers
Why Polyurethane Is Preferred in Heavy Equipment
Earthmoving equipment regularly operates in harsh environments such as dust, mud, rock, vibration, and continuous load cycling. Polyurethane delivers:
-
Extended service life compared to Nitrile or standard rubber
-
Reduced downtime due to seal wear
-
Improved reliability in high-pressure, high-impact components
-
Excellent performance in both mobile hydraulics and static sealing applications
Kit Consists of
HA24051408 — OEM: R4105004 — Qty: 10 pcs
• Material: Poly Urethane (per OEM)
HA24051417 — OEM: R4154858 — Qty: 10 pcs
• Material: Poly Urethane (per OEM)
HA24051429 — OEM: R4016121 — Qty: 10 pcs
• Material: Nitrile Duro 90
HA24051434 — OEM: Not Listed — Qty: 20 pcs
• Material: SKFM
HA24051407 — OEM: R4071255 — Qty: 40 pcs
• Material: Poly Urethane (per OEM)
HA24051411 — OEM: R4131587 — Qty: 10 pcs
• Material: Poly Urethane (per OEM)
HA24051428 — OEM: R4183086 — Qty: 10 pcs
• Material: Poly Urethane (per OEM)
HA24051433 — OEM: Not Listed — Qty: 20 pcs
• Material: SKFM
HA24051405 — OEM: R4068358 — Qty: 40 pcs
• Material: Poly Urethane (per OEM)
HA24051410 — OEM: R4116301 — Qty: 10 pcs
• Material: Poly Urethane (per OEM)
HA24051427 — OEM: R4268035 — Qty: 10 pcs
• Material: Poly Urethane (per OEM)
HA24051432 — OEM: Not Listed — Qty: 20 pcs
• Material: SKFM
HA24051404 — OEM: R4068357 — Qty: 20 pcs
• Material: Poly Urethane (per OEM)
HA24051409 — OEM: R4105005 — Qty: 10 pcs
• Material: Poly Urethane (per OEM)
HA24051426 — OEM: R4267979 — Qty: 10 pcs
• Material: Poly Urethane (per OEM)
HA24051430 — OEM: R4273347 — Qty: 10 pcs
• Material: Poly Urethane (per OEM)
HA24051431 — OEM: R4248505 — Qty: 4 pcs
• Material: Nitrile Duro 70