421-8985 Duo Cone Seal Group is a Caterpillar metal-to-metal facing seal designed for final-drive applications on large 793-series off-highway trucks. Its 19.0-inch outside diameter and 17.901-inch inside diameter support a large rotating sealing interface, while the Duo Cone design helps maintain an oil-tight seal and protect internal final-drive components from external contaminants under demanding mining conditions.
| Item | Specification |
|---|---|
| Product Name | Duo Cone Seal Group |
| Part Number | 421-8985 |
| Brand | Caterpillar (CAT) |
| Machine Model | CAT 793D / 793F / 793F CMD / 793F OEM / 793F XQ |
| Weight | 6.5 KG |
| Material | Metal Facing Seal; exact material not specified by Caterpillar |
| Condition | Brand New – Genuine |
| Warranty | 6 Months |
| Packaging | Standard Export Carton |
| Availability | Generally in stock |
| Origin | China |
The 421-8985 Duo Cone Seal Group is officially listed for:
Caterpillar also lists this seal for CAT 793 off-highway trucks. Machine serial number and configuration should be verified before installation because equipment configuration changes can affect fitment.
The 421-8985 is particularly suited to final-drive sealing applications on large off-highway mining trucks operating under heavy loads, dust and continuous rotation.
YLCM provides secure export packaging suitable for precision sealing components. Packaging may include standard export cartons, heavy-duty wooden cases, shockproof protection, moisture-proof protection and secure fixation to help prevent damage during international transportation.
Available logistics solutions include:
The appropriate transportation method can be arranged according to order quantity, destination and delivery requirements.
Q1: What is 421-8985?
A: 421-8985 is a Caterpillar Duo Cone Seal Group designed for heavy-duty rotating and final-drive applications.
Q2: Which machines use 421-8985?
A: Caterpillar lists 793D, 793F, 793F CMD, 793F OEM and 793F XQ, as well as other 793-series configurations.
Q3: What is the outside diameter of 421-8985?
A: Caterpillar specifies an outside diameter of 19.0 inches.
Q4: What is the inside diameter?
A: The official inside diameter is 17.901 inches.
Q5: What does a Duo Cone Seal do?
A: It uses metal-to-metal sealing faces to help prevent oil loss and protect the final drive from the intrusion of foreign particles.
Q6: Can the seal accommodate misalignment?
A: Yes. Caterpillar states that Final Drive Duo Cone Seals maintain an oil-tight seal during rotation in intense applications where misalignment may occur.
Q7: Can YLCM verify compatibility?
A: Yes. Send us the machine model, serial number and existing part number, and our technical team can help verify the correct seal.
Q8: How can I request a quotation?
A: Send the part number, machine model, quantity and destination. YLCM can provide compatibility confirmation, quotation, lead time, packaging and logistics information.
Looking for 421-8985 Duo Cone Seal Group for CAT 793D or 793F? Send YLCM your part number, machine model, serial number, quantity and destination. Our team can help verify compatibility and provide pricing, lead time, packaging and global shipping solutions.
