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Home > Products > Cylinder Seal Kits > 242-2542 2422542 Hydraulic Boom Cylinder Seal Repair Kit for Heavy Crawler Excavator 621F 621G 621H

242-2542 2422542 Hydraulic Boom Cylinder Seal Repair Kit for Heavy Crawler Excavator 621F 621G 621H

Name: 242-2542 2422542 Hydraulic Boom Cylinder Seal Repair Kit for Heavy Crawler Excavator 621F 621G 621H
Brand: Guangzhou Opal Machinery Parts Operation Department
SKU: 242-2542
Price: 7.00 USD
Availability: InStock

Product Details

Place of Origin: China

Brand Name: OUB

Certification: ISO9001

Model Number: 242-2542

Payment & Shipping Terms

Minimum Order Quantity: 10

Price: Negotiable

Packaging Details: PP Bag Inside.outer is carton with film wrapped.

Delivery Time: Within 5-15 days after getting your desposit

Payment Terms: L/C,D/A,D/P,T/T,Western Union

Supply Ability: 1000Pcs

Get Best Price

Product Details

Product Description

Product Details

Highlight: 
                                                                                                                                                                                                                                                Hydraulic boom cylinder seal kit, Excavator 621F seal repair kit, Heavy crawler cylinder seal kit
                              

Part No.::	242-2542	Part Name::	SEAL KIT
Model:	D6M D6N D6R II D6K	Machine:	Grader
Material:	PU	Color:	BLACK,BROWN,WHITE

Part No.::	242-2542
Part Name::	SEAL KIT
Model:	D6M D6N D6R II D6K
Machine:	Grader
Material:	PU
Color:	BLACK,BROWN,WHITE

Product Description

1. Quick Details of seal 242-2542:

Part NO.	242-2542
Machine	Grader
Size	OEM
Material	PU
Oil seal type	SEAL KIT

2. 242-2542 parts on group :

NO.	PART NO.	PRAT NAME	QTY
1	289-2948	SEAL	1
2	2K-4096	SEAL	1
3	4J-3420	SEAL	1
4	9X-7264	SEAL	1
5	289-2937	SEAL	1
6	8T-5668	SEAL	1
7	225-3281	SEAL	1
8	5F-3144	O-RING	1

3. 242-2542 picture:

242-2542 2422542 Hydraulic Boom Cylinder Seal Repair Kit for Heavy Crawler Excavator 621F 621G 621H 0
4. Service part number :

5P6302	2035958	1978006
5P7530	4D6695	1661497
6J2680	8E5742	4J8997
5P8872	5F8000	1H1023
6V1454	7F8268	4J5351
6V3907	7G4822	5D4311
6V3908	2J6274	2D6533
6V3917	4J2506	9M6097
6V5064	3K0360	3679300
6V5066	2M9780	7D9014
6V6609	8M4992	2357679
8T1919	4S5879	1559644

5. FAQ
Q: What is the main working principle and sealing function of thermoset PU in the boom cylinder?
A: As the core dynamic sealing component, thermoset PU features excellent compression recovery and wear resistance. It tightly fits the reciprocating piston rod and inner groove, effectively blocking high-pressure hydraulic fluid leakage when the boom lifts up and lowers down frequently under heavy load during excavation and material handling operations.

Q: Why is pyrophyllite-filled PTFE adopted as the matching back-up ring for PU main seals?
A: This modified PTFE material can fill tiny assembly gaps inside piston grooves. When the excavator boom bears sudden impact load and causes instant hydraulic pressure surge, it can effectively buffer pressure and prevent the edge of PU seals from being squeezed, deformed or torn, greatly extending the overall service life of the sealing system.

Q: What unique performance advantages does FKM rubber have compared with ordinary rubber materials?
A: FKM boasts outstanding resistance to high temperature, oil aging and chemical corrosion. It can keep stable sealing performance for a long time even when contacting overheated and oxidized hydraulic oil inside the closed cylinder, which makes it perfectly suitable for high-heat static connection positions that work continuously for hours.

Q: Where are FKM rubber seals mainly installed on the boom cylinder?
A: FKM rubber pieces are primarily used for static sealing on cylinder end covers, flange joints and high-pressure pipeline threaded ports. These positions are close to the engine heat source and bear long-term oil immersion, so FKM’s high temperature and oil resistance can fully play its role here.

6. Exhibition and Wearhous

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Tel: 86-135-33728134

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