8C3839 - Seal A Fits Caterpillar 8C-3839, 3Y8949, 5J3620

One New Aftermarket Replacement Hydraulic Rod Buffer Seal for Caterpillar (Cat) Equipment

This is an aftermarket replacement hydraulic rod buffer seal (Seal Assembly, Type B) for Caterpillar (Cat) construction and agricultural equipment. The 8C-3839 is a two-piece bronze-filled PTFE buffer seal with a rubber energizer that acts as a secondary rod seal, protecting the hydraulic cylinder rod from sudden increases in system pressure and pressure spikes. It is designed for use in Caterpillar hydraulic cylinders on a wide range of machines including wheel tractor-scrapers, track-type tractors, motor graders, backhoes, wheel loaders, and underground articulated trucks.

Specifications

• Type: Hydraulic Rod Buffer Seal (Type B - Bronze Filled PTFE with rubber energizer)
• Material: Bronze Filled PTFE / Rubber Energizer
• Nominal Inner Diameter: 2.5 in (2-1/2 in) Rod Diameter
• Housing Diameter: 3.141 in (3-1/8 in)
• Nominal Height (Depth): 0.20 in
• Groove Width: 0.22 in
• Pressure Range: 0 to 5000 psi
• Temperature Range: -40 degrees F to 220 degrees F
• Overall Dimensions: 3.15 in L x 3.15 in W x 0.20 in D

Compatible Models

Caterpillar Backhoe Loaders: 416, 416B, 416C, 416E, 426, 426B, 426C, 424D, 428B, 428C, 428D, 432D, 436C, 438, 438C, 438D, 442D

Caterpillar Motor Graders: 14M-3 (14M3), 16, 16G, 18

Caterpillar Wheel Tractor-Scrapers: 621E, 621K, 621K OEM, 623E, 623F, 623G, 623K, 623K LRC, 627E, 627K

Caterpillar Wheel Loaders: 924G, 924GZ, 924H, 924HZ, 928G, 928HZ, 930H, 938F, 988H

Caterpillar Track-Type Tractors: D5, D6GC, D7, D7H, D7R II

Caterpillar Integrated Toolcarriers: IT24F, IT28F, IT28G

Caterpillar Off-Highway Trucks / Underground Trucks: 773G, 773G LRC, 773G OEM, 775G, 775G LRC, 777G, AD45, AD55

Caterpillar Track Loaders: 953C

Caterpillar Load Haul Dump / Underground Loaders: R1300, R1700 II, R1700G, R2900, R2900G, R3000H

Caterpillar Excavators / Other: 227, 322B L, 322C FM, 325B L, 330B L, 350, 350 L, 375, 375 L, 550, 570, 570B, 580, 580B, 611, 785, 824C

Replaces Part Number(s):

8C3839, 8C-3839, 3Y8949, 3Y-8949, 5J3620, 5J-3620, 289-2937, 2892937

Aftermarket Interchange Numbers

1672201, 167-2201, CTC-8C3839, RCAT-8C3839, 5J-3620-A

New aftermarket replacement part - not remanufactured, not used.