Generally, warranty for parts purchased on Parts.Cat.Com is 12 months from the invoice date as defined in the Caterpillar Limited Warranty. Parts Warranty covers defects in material and workmanship throughout the Warranty period once it has been installed. For complete Warranty detail contact your local Cat Dealer.
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Return Policy
Return Policy Information
Unless otherwise noted by a non-returnable part
icon, most parts can be returned to your authorized Cat® dealer under their return policy.
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Warranty Information
Warranty Information
Generally, warranty for parts purchased on Parts.Cat.Com is 12 months from the invoice date as defined in the Caterpillar Limited Warranty. Parts Warranty covers defects in material and workmanship throughout the Warranty period once it has been installed. For complete Warranty detail contact your local Cat Dealer.
Need More Help? Contact Us
Find a DealerEmail
Return Policy
Return Policy Information
Unless otherwise noted by a non-returnable part
icon, most parts can be returned to your authorized Cat® dealer under their return policy.
Need More Help? Contact Us
Find a DealerEmail
KeyKey
Factory Fit
This part is designed to fit your Cat equipment based on the manufacturer’s specifications.
Any changes to the manufacturer’s configuration might result in the product not fitting your Cat equipment. Please consult your Cat Dealer before purchasing to ensure that this part is appropriate for your Cat equipment in its current condition and assumed configuration. This indicator cannot guarantee compatibility for all parts.
Remanufactured
Non-Returnable
Kit
Replaced
Remanufactured
Non-Returnable
Kit
Replaced
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Parts diagram for 5F-1678
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Description for part number 5F-1678
Description: O-Rings are used in static sealing and some dynamic applications.
Attributes: Cat® O-Rings are made from materials that are matched to the fluids, temperatures and pressures found in Cat engines and machines. The materials resist wear and extrusion, and provide superior resistance to seal compression set. In addition, certain Cat O-Rings are coated with PTFE to minimize seal twisting and cutting during seal installation.
Dimensions of our O-Rings are consistently held to tight tolerances to ensure they fit properly into seal grooves with the necessary seal compression.
With over 2500 O-Rings in different sizes and materials, Cat O-Rings are your best solution for your Cat and other mobile equipment O-Ring needs.
Cat Sealing systems protect more expensive parts from leaks and contamination. Protect your investment with Genuine Cat Seals.
Applications: O-Rings are used in many static and dynamic joints throughout Cat machines and engines.
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Warning:This product can expose you to chemicals including 1,3-Butadiene, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Material Description: Nitrile (NBR) rubber is capable of service temperatures of -40 to 100C and is resistant to fuel oils, gasoline, ultra low sulfur diesel fuel and lubricants. Nitrile rubber is not recommended for applications that require resistance to bio-diesel or coolant.
Notes: Dimensions and material descriptions provided for reference only.
Polymer: NBR (Nitrile butadiene)
Material Hardness: 75A
Dash Size: 214
Seal/O-Ring Type: Standard
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Compatible Models for part number 5F-1678
UNDERGROUND ART TRUCK
AD30 AE40 II AD45
GENERATOR
SR4 SR4B
TRUCK ENGINE
1673 1676 1693 3306 1673C
INTEGRATED TOOLCARRIER
IT18B IT28B
LOAD HAUL DUMP
R1700G R2900 R1700 II R2900G
MOTOR GRADER
120B 16 140B 140 14E 120 12F 12E
WINCH
528 55
BACKHOE
D3 931
TRACK SKIDDER
D4HTSK III 527
TRACK-TYPE TRACTOR
D4H III D6R II D3B D4G D4H D4D D4E D6C D6D D6E D6H D7R D7F D7G D7H D6 D8K D8H D9E D9G D9R D6G2 XL D4H XL D4E SR D7R II
Description: O-Rings are used in static sealing and some dynamic applications.
Attributes: Cat® O-Rings are made from materials that are matched to the fluids, temperatures and pressures found in Cat engines and machines. The materials resist wear and extrusion, and provide superior resistance to seal compression set. In addition, certain Cat O-Rings are coated with PTFE to minimize seal twisting and cutting during seal installation.
Dimensions of our O-Rings are consistently held to tight tolerances to ensure they fit properly into seal grooves with the necessary seal compression.
With over 2500 O-Rings in different sizes and materials, Cat O-Rings are your best solution for your Cat and other mobile equipment O-Ring needs.
Cat Sealing systems protect more expensive parts from leaks and contamination. Protect your investment with Genuine Cat Seals.
Applications: O-Rings are used in many static and dynamic joints throughout Cat machines and engines.
View More
Warning:This product can expose you to chemicals including 1,3-Butadiene, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Material Description: Nitrile (NBR) rubber is capable of service temperatures of -40 to 100C and is resistant to fuel oils, gasoline, ultra low sulfur diesel fuel and lubricants. Nitrile rubber is not recommended for applications that require resistance to bio-diesel or coolant.
Notes: Dimensions and material descriptions provided for reference only.
Polymer: NBR (Nitrile butadiene)
Material Hardness: 75A
Dash Size: 214
Seal/O-Ring Type: Standard
View More
Compatible Models for part number 5F-1678
UNDERGROUND ART TRUCK
AD30 AE40 II AD45
GENERATOR
SR4 SR4B
TRUCK ENGINE
1673 1676 1693 3306 1673C
INTEGRATED TOOLCARRIER
IT18B IT28B
LOAD HAUL DUMP
R1700G R2900 R1700 II R2900G
MOTOR GRADER
120B 16 140B 140 14E 120 12F 12E
WINCH
528 55
BACKHOE
D3 931
TRACK SKIDDER
D4HTSK III 527
TRACK-TYPE TRACTOR
D4H III D6R II D3B D4G D4H D4D D4E D6C D6D D6E D6H D7R D7F D7G D7H D6 D8K D8H D9E D9G D9R D6G2 XL D4H XL D4E SR D7R II
