Product Description
The CT 3H107 is a precision hydraulic seal O-ring engineered for Caterpillar electric material handling equipment, including forklifts and lift trucks. Manufactured from NBR 75A nitrile rubber in compliance with SAE AS568 Dash 212 specification, this seal delivers reliable performance in demanding hydraulic systems.
With a 21.82 mm inner diameter and 3.53 mm cross-section, the CT 3H107 provides a factory-spec direct replacement for Caterpillar's original equipment seal applications. Its robust elastomer formulation resists mineral oils and hydraulic fluids, ensuring long service life and minimizing downtime across warehouse, distribution, and material handling operations.
Specifications
Material & Construction
| Seal Material | Nitrile rubber (NBR), 75 Shore A hardness |
Part Numbers
| Manufacturer Part Number | 3H-0107 |
| OEM Part Number | 3H0107 |
| Cross-Reference Part Numbers | Replaces SH107; equivalent to NSN 5331-00-593-1192 |
| Supersedes | Supersedes CT 3H107, 0012783, 5P9936 |
| Compatible Models | Fits Caterpillar electric lift truck lines including D8K, 130G, 613B, and other CAT equipment |
Frequently Asked Questions
Q: What are the dimensions and material specifications for the CT 3H107 seal O-ring?
A: The CT 3H107 is manufactured from NBR 75A elastomer compound conforming to SAE AS568 Dash 212 specification. The seal has a 21.82-mm inner diameter and a 3.53-mm cross-section. These dimensions make it a standard metric O-ring sized for Caterpillar hydraulic system applications. Verify the gland cavity dimensions on your equipment match before ordering.
Q: Which Caterpillar equipment is the CT 3H107 seal compatible with?
A: The CT 3H107 is designed for Caterpillar electric lift truck lines including D8K, 130G, 613B, and other Caterpillar material handling equipment with compatible hydraulic systems. Confirm your specific equipment model and hydraulic circuit pressure rating before ordering. Using the wrong seal size or material for your hydraulic system can result in leakage or seal failure.
Q: What are the cross-reference part numbers for the CT 3H107?
A: The CT 3H107 OEM Caterpillar designation is 3H0107. It is also cross-referenced as SH107. The NSN equivalent is 5331-00-593-1192. The seal supersedes legacy part numbers 0012783 and 5P9936. Confirm the correct part number when ordering to ensure compatibility with your gland cavity.
Q: How durable is NBR 75A elastomer in hydraulic applications?
A: NBR 75A is a standard nitrile elastomer compound widely used in hydraulic seals, offering good resistance to mineral oils and typical hydraulic fluids. The 75-durometer hardness provides a balance between sealing capability and flexibility. Typical service life depends on pressure cycles, fluid temperature, and contamination levels. Plan for replacement if you observe hydraulic fluid leakage around cylinder rods or valve ports.
