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Home > Products > Cylinder Seal Kits > 521-2974 5212974 Hydraulic Boom Lift Overhaul Seal Kit for Heavy Duty Crawler Dozer 427F2 415F2 428F2

521-2974 5212974 Hydraulic Boom Lift Overhaul Seal Kit for Heavy Duty Crawler Dozer 427F2 415F2 428F2

Name: 521-2974 5212974 Hydraulic Boom Lift Overhaul Seal Kit for Heavy Duty Crawler Dozer 427F2 415F2 428F2
Brand: Guangzhou Opal Machinery Parts Operation Department
SKU: 521-2974
Price: 7.00 USD
Availability: InStock

Product Details

Place of Origin: China

Brand Name: OUB

Certification: ISO9001

Model Number: 521-2974

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 Lift Seal Kit, Heavy Duty Dozer Cylinder Seal Kit, 427F2 Crawler Seal Kit with Warranty
                              

Part No.::	521-2974	Part Name::	SEAL KIT
Model:	428F 422F	Machine:	Backhoe Loader
Material:	PU	Color:	BLACK,YELLOW,BLUE

Part No.::	521-2974
Part Name::	SEAL KIT
Model:	428F 422F
Machine:	Backhoe Loader
Material:	PU
Color:	BLACK,YELLOW,BLUE

Product Description

1. Quick Details of seal 521-2974:

Part NO.	521-2974
Machine	Backhoe loader
Size	OEM
Material	PU
Oil seal type	SEAL KIT

2. 521-2974 parts on group :

NO.	PART NO.	PRAT NAME	QTY
1	144-5287	SEAL	1
2	343-8051	SEAL	2
3	340-9308	O-RING	1
4	323-2470	SEAL	1
5	340-9325	O-RING	1
6	478-4177	SEAL	1
7	338-2445	SEAL	1

3. 521-2974 picture:

521-2974 5212974 Hydraulic Boom Lift Overhaul Seal Kit for Heavy Duty Crawler Dozer 427F2 415F2 428F2 0
4. Service part number :

PART NO.	PART NO.	Part NO.
2K2961	3K-0360	1P-7363
1411774	6V-9746	8T-2361
2R0098	3J-1907	7F-8607
6V5059	6V-8397	8F-0212
8C5176	3D-2824	2K8257
8C5175	5K-9090	1654854
1H7339	5P-2235	1719375
8T9528	1T-0132	2468777
194-9584	951594	951719
5P7084	951594	3H-0107
8M8282	335879	5K-5959
2D-6533	095-1586	1173036
3K0360	6J7167	2P-5820

5. FAQ

Q: What prominent practical advantages does HNBR rubber own compared with conventional ordinary NBR rubber?
A: HNBR features exceptional damp ageing resistance and anti-hydrolysis capability, maintaining stable sealing performance after long-term exposure to moisture-contaminated hydraulic oil in damp outdoor mining and wet mud construction sites.

Q: At which detailed fixed cylinder positions are HNBR rubber O-rings commonly mounted?
A: HNBR small rubber fittings are used for static sealing on cylinder end cover mating surfaces and threaded connector gaps of hydraulic pipelines where slow invisible fluid seepage easily occurs.

Q: What beneficial optimization does phenolic impregnated polyester fabric wear ring bring to piston reciprocating movement?
A: It effectively limits piston lateral offset and side shake during boom movement, keeps piston running concentrically inside cylinder bore and cuts down persistent frictional scratch between piston outer wall and cylinder inner tubing.

Q: Are all spare parts produced strictly following original OEM dimension specifications?
A: Every sealing accessory is manufactured referring to factory original engineering drawings to achieve perfect direct replacement without field size trimming or manual fitting adjustment.

Q: Do on-site service technicians need to cut or polish seal edges to match installation grooves?
A: No cutting, sanding or any manual dimension modification is required at all; new seals can be directly fitted once worn original seals are disassembled and removed.

6. Exhibition and Wearhous

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521-2974 5212974 Hydraulic Boom Lift Overhaul Seal Kit for Heavy Duty Crawler Dozer 427F2 415F2 428F2

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