| Category |
Cylinder Blade |
| Name |
Seal Kit |
| Parts No |
283-9122 2839122 |
| Machine Number |
303.5C 303C CR 304 304C CR 304D CR 304E 305 305.5D |
| Lead time |
1-3 DAYS |
| Quality |
Brand new, OEM quality |
| MOQ |
1 PCS |
| Means of transport |
By sea/air, DHL FEDEX UPS TNT |
| Packing |
As request or standard packing |
| Key Design Features |
1. OEM-matched dimensions for perfect fit with Cat cylinders/pumps |
| 2. High-performance materials optimized for Cat’s harsh operating environments (dust, vibration, pressure spikes) |
| 3. Pre-packaged with all required seals for a complete repair (eliminates missing parts) |
| 4. Engineered to prevent hydraulic fluid leakage and contaminant ingress |
| Working Principle |
1. Seals create a leak-tight barrier between moving (piston/rod) and static (cylinder housing) components |
| 2. Piston/rod seals trap hydraulic oil inside the cylinder, ensuring efficient pressure buildup for component movement (boom/arm/bucket operation) |
| 3. Wiper seals block dust, dirt, and moisture from entering the cylinder/pump, preventing internal wear |
| 4. Backup rings reinforce seals to avoid extrusion into gaps under high pressure |
| Core Functions |
1. Prevent hydraulic fluid leakage (reduces fluid loss and environmental contamination) |
| 2. Protect hydraulic cylinders/pumps from abrasive contaminants (extends component service life) |
| 3. Maintain hydraulic system pressure efficiency (ensures smooth equipment operation) |
| 4. Simplify maintenance (one kit covers all seal needs for a specific repair) |
MINI HYD EXCAVATOR 303.5C 303.5D 303.5E 303C CR 304 304C CR 304D CR 304E 305 305.5D 305.5E 305C CR 305D CR 305E C.aterp.illar.
- More other seal kit applied to C A T heavey machine
| 1214480 KIT-WATER BASE |
| 120H, 120H ES, 120H NA, 135H, 135H NA, 216, 216B, 216B3, 226B, 226B3, 228, 232B, 236, 242B, 247, 247B, 247B3, 248, 257B, 267, 30/30, 301.5, 301.6C, 301.7D, 301.7D CR, 302.2D, 302.4D, 302.5, 302.5C, 30... |
| |
| 3017292 KIT-SERVICE METER |
| 140G, 303.5C, 303C CR, 304C CR, 305C CR, 312D, 312D L, 314D LCR, 315D L, 319D LN, 320D, 320D FM, 320D FM RR, 320D L, 320D LRR, 320D RR, 321D LCR, 322C FM, 323D L, 323D LN, 323D SA, 324D FM, 324D FM LL... |
| |
| 1991149 KIT-SEAL |
| 305, 305.5, 306 |
| |
| 2168100 KIT-SEAL |
| 304 |
| |
| 3154628 KIT-SOLENOID |
| 303.5C, 304C CR, 304D CR, 305C CR |
| |
| 2788641 KIT-SEAL |
| 303.5C, 303.5D, 303.5E, 303C CR, 304D CR, 304E |
| |
| 2790639 KIT-SEAL |
| 303.5C, 303.5D, 303.5E, 303C CR, 304D CR, 304E |
| |
| 2519845 KIT-SEAL |
| 303.5D, 303.5E, 303C CR |
| |
| 2797940 KIT-SEAL |
| 303.5D, 303.5E, 303C CR, 303E CR |
| |
| 2773395 KIT-SEAL |
| 304C CR, 305.5E, 305D CR, 305E |
| |
| 2774167 KIT-SEAL |
| 304C CR, 305D CR, 305E |
| |
| 2774140 KIT-SEAL |
| 304C CR, 305D CR, 305E |
| |
| 2027181 KIT-GEAR |
| 303 |
| |
| 2028110 KIT-SEAL |
| 303 |
| |
| 2714484 KIT-HYD CYLINDER SEAL |
| 303 |
| |
| 1992340 KIT-SEAL |
| 302.5C, 303, 304 |
| |
| 1992335 KIT-SCREW |
| 302.5C, 303, 304 |
| |
| 1992337 KIT-LEVER |
| 302.5C, 303, 304 |
| |
| 2102760 KIT-SEAL |
| 304 |
| |
| 2102759 KIT-SEAL |
| 304 |
| |
| 2167644 KIT-SEAL |
| 304 |
| |
| 2171643 KIT-SEAL |
| 304 |
| |
| 2168100 KIT-SEAL |
| 304 |
| |
| 2199066 KIT-SEAL |
| 304 |
| Pos. |
Part No |
Qty |
Parts name |
Comments |
| 1 |
286-7323 |
[1] |
CYLINDER AS (BLADE) |
|
| |
3B-8488 |
[1] |
FITTING-GREASE (1/8-27 PTF) |
|
| |
140-5169 |
[1] |
BUSHING |
|
| |
175-4723 |
[2] |
SEAL |
|
| 2 |
286-7324 |
[1] |
ROD AS |
|
| |
3B-8489 |
[1] |
FITTING-GREASE (1/8-27 PTF) |
|
| |
140-5169 |
[1] |
BUSHING |
|
| |
175-4723 |
[2] |
SEAL |
|
| 3 |
283-9117 |
[1] |
HEAD AS (CYLINDER) |
|
| 3A. |
095-1707 |
[1] |
SEAL-O-RING |
|
| 3B. |
095-1710 |
[1] |
SEAL-O-RING |
|
| 3C. |
140-4934 |
[1] |
RING |
|
| 3D. |
203-2343 |
[1] |
BUSHING |
|
| 3E. |
203-2344 |
[1] |
RING |
|
| 3F. |
237-7901 |
[1] |
RING |
|
| 3G. |
283-9118 |
[1] |
HEAD |
|
| 4 |
283-9119 |
[1] |
PISTON AS (CYLINDER) |
|
| 4A. |
140-3750 |
[1] |
RING AS |
|
| 4B. |
192-0633 |
[1] |
BALL |
|
| 4C. |
237-7904 |
[2] |
RING |
|
| 4D. |
283-9120 |
[1] |
PISTON |
|
| 4E. |
283-9121 |
[1] |
SCREW (M6X1X6-MM) |
|
| |
|
|
AVAILABLE REPAIR KIT(S): |
|
| |
283-9122 |
[1] |
KIT-SEAL (BLADE) |
|
| |
|
|
(INCLUDES SEALS & RINGS) |
|
- We could supply the following spare parts
1 Hydraulic parts: hydraulic pump, main valve, hydraulic cylinder, final drive, travel motor, swing machinery, swing motor etc.
2 Engine parts: engine ass’y, piston, piston ring, cylinder block, cylinder head, crankshaft, turbocharger, fuel injection pump, starting motor and alternator etc.
3 Undercarriage part: Track roller, Carrier roller, Track Link, Track shoe, Sprocket, Idler and Idler cushion etc.
4 Cab parts: operator’s cab, wiring harness, monitor, controller, seat, door etc.
5 Cooling parts: Radiator, air conditioner, compressor, after cooler etc.
6 Other parts: Service kit, swing circle, engine hood, swing joint, fuel tank, filter, boom, arm, bucket etc.
Packing Details :
inner packing : plastic film for wrapping
external packing : wooden
Shipping :
within 3 days after received the payment , by air or by express or by sea on the basis of the
quantity and emergency circumstances.
1. By Couriers: DHL, UPS, FEDEX, TNT are the main courier companies we are cooperated,
2. By Air: Delivery from the Guangzhou air port to customer's destination city air port.
3. By Sea: Delivery from the Huangpu port .
Ihre Nachricht muss zwischen 20 und 3.000 Zeichen enthalten!
