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.
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
Email
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.
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: 239
Seal/O-Ring Type: Standard
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Compatible Models for part number 8H-7521
GENERATOR
SR4
TRUCK ENGINE
C7 3306 3306B
INTEGRATED TOOLCARRIER
IT18B IT12B IT14G IT28G IT28F IT28B
LOAD HAUL DUMP
R1600G R1600 R1700G R1700 II R1300
MOTOR GRADER
16 140G 16G 140 14E 24H 120 12F
BACKHOE
D3 931
TRACK-TYPE TRACTOR
D10 D3B D6C D6M D7F D7G D5 D9G D11R
WHEEL SKIDDER
525 518
MARINE ENGINE
3304 3304B
PIPELAYER
561C 572F 571F
EXCAVATOR
215D 219D 350-A L 350 L 322B L 225 M325D MH 215 M312 M325D L MH
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.
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: 239
Seal/O-Ring Type: Standard
View More
Compatible Models for part number 8H-7521
GENERATOR
SR4
TRUCK ENGINE
C7 3306 3306B
INTEGRATED TOOLCARRIER
IT18B IT12B IT14G IT28G IT28F IT28B
LOAD HAUL DUMP
R1600G R1600 R1700G R1700 II R1300
MOTOR GRADER
16 140G 16G 140 14E 24H 120 12F
BACKHOE
D3 931
TRACK-TYPE TRACTOR
D10 D3B D6C D6M D7F D7G D5 D9G D11R
WHEEL SKIDDER
525 518
MARINE ENGINE
3304 3304B
PIPELAYER
561C 572F 571F
EXCAVATOR
215D 219D 350-A L 350 L 322B L 225 M325D MH 215 M312 M325D L MH
