CAT hydraulic O-ring 3J-1907
YNF16815 excavator rubber O-ring seal
OEM replacement O-ring for CAT machines
NBR O-ring 3J-1907 for hydraulic sealing
Excavator valve block O-ring seal 3J-1907
Static seal ring 3J-1907 in bulk pack
FKM optional CAT O-ring 3J-1907
Black rubber O-ring for hydraulic cylinders
CAT hydraulic O-ring 3J-1907
YNF16815 excavator rubber O-ring seal
OEM replacement O-ring for CAT machines
NBR O-ring 3J-1907 for hydraulic sealing
Excavator valve block O-ring seal 3J-1907
Static seal ring 3J-1907 in bulk pack
FKM optional CAT O-ring 3J-1907
Black rubber O-ring for hydraulic cylinders

O-Ring Seal 3J-1907 for CAT Excavator Hydraulic Systems YNF16815

3J-1907 O-ring for CAT hydraulic applications with precision sealing.

  • OEM reference 3J-1907, used in a wide range of CAT hydraulic systems

  • Made with NBR (standard) or FKM (high-temp) rubber for sealing performance

  • Designed for static and low-speed dynamic sealing in pumps, cylinders, valves

  • Excellent resistance to oil, pressure, heat, and abrasion

  • Widely stocked for aftermarket distribution and maintenance operations

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O-Ring Seal Description

YNF16815 is the O-ring seal equivalent to CAT part number 3J-1907. Manufactured with precision for heavy equipment hydraulic sealing tasks, it offers a secure barrier against hydraulic fluid leaks in high-pressure environments. It is compatible with cylinder heads, valve bodies, pump housings, and manifold connections. The rubber composition—available in NBR and FKM—delivers the flexibility, compression resistance, and fluid compatibility required for extended service life. Ideal for stock by OEM parts suppliers, excavator service fleets, and global wholesale distributors.

O-Ring Seal Technical Sheet

Item Details
YNF Code YNF16815
OEM Part Number 3J-1907
Product Name Seal-O-Ring
Material NBR (Standard), FKM (Optional)
Cross Section Type Round
Usage Area Hydraulic static/dynamic sealing
Temperature Range -30°C to +200°C
Pressure Resistance Up to 40 MPa
Compatibility CAT, Komatsu, Volvo, Hitachi
MOQ 100 pcs
Country of Origin China
Packaging Individual pack / bulk pack
Shipping Options Express / Air / Sea freight
Payment Methods T/T, Western Union, L/C

O-Ring Seal Applications

Application Area Description
Cylinder Cap Assembly Static seal at rod-to-cap interface
Hydraulic Valve Housing Port and cavity sealing
Pump Covers Static sealing between case and flange
Pipe Couplings Sealing hose-to-block or pipe joints
Parts Warehousing Popular component for excavator service inventory

CAT O-Ring 3J-1907 Seal Detail Display

FAQs

Related Knowledge:

  • O-rings like 3J-1907 are ideal for static sealing at flanges, ports, and caps in excavators.

  • The right compound (NBR or FKM) ensures compatibility with hydraulic oil, temperature, and system pressure.

  • Replacing O-rings during every overhaul avoids hydraulic failure and fluid contamination.

Related Products:

  • 5P-2568 O-ring seal

  • O-ring repair kits for CAT 320

  • Cylinder rod seal and wear rings

  • Excavator valve spool seal sets

FAQs:

  • Q: Can this O-ring be customized in color or hardness?
    A: Yes, customization options (color, Shore A hardness) are available for large orders.

  • Q: Is the 3J-1907 included in CAT cylinder rebuild kits?
    A: Yes, it’s commonly included in OEM and aftermarket seal kits for CAT systems.

Inquire Now for O-Ring 3J-1907

Looking to source reliable and OEM-compatible O-rings for CAT hydraulic systems? YNF16815 (3J-1907) delivers quality, consistency, and bulk-ready packaging. Suitable for global distributors and excavator repair operations. Request your quote today from YNF Machinery, your trusted supplier of professional sealing solutions.

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