C21-P Casing Hangers
The GBI C21-P is a wrap-around, slip-type hanger designed as a manual energize seal solution for high casing load applications. It is specifically engineered for scenarios where casing weight is not available or is insufficient to energize a packoff seal, providing a reliable, positive seal through controlled mechanical force.
Key Features and Applications
The GBI C21-P provides operators with direct control over the sealing process in demanding situations. With a successful track record of over 35 years, it is a globally trusted component for its safe casing deflection control and reliable performance in high-load, manual-seal applications. Its key features include:
- Manual Energized Seal
- High Casing Load Capacity
- Controlled Torque Energizing
The Manual Energized Seal Advantage
The core feature of the C21-P is its manual energizing mechanism. In certain situations, such as shallow wells with heavy casing, there may not be enough casing string weight to properly energize an automatic seal. The C21-P solves this problem by using cap-screws and lock-screws to apply a precise, specified torque. This action mechanically compresses the seal, creating a positive, verifiable barrier independent of the casing weight and giving the operator complete control over the seal's integrity.
C21-P Casing Hanger Specifications
Below are the detailed specifications and part numbers for our C21-P Casing Hangers. All sizes are available as API Monogrammed or Non-Monogrammed and in a full range of material classes and temperature ratings to meet your project requirements.
All sizes are available API Monogrammed, PSL 1-3, Material class AA, BB, CC, DD, EE, FF, HH
| Size | GBI Part # |
| 7” x 2-3/8” | A4498-H |
| 7” x 2-7/8” | A4499-H |
| 7” x 3-1/2” | A4506-H |
| 7” x 4” | A4509-H |
| 7” x 4-1/2” | A4508-H |
| 9” x 3-1/2” | A4501 |
| 9” x 4” | A4500 |
| 9” x 4-1/2” | A4502 |
| 9” x 5” | A4503 |
| 9” x 5-1/2” | A4504 |
| 11” x 2-3/8” | A4700 |
| 11” x 2-7/8” | A4702 |
| 11” x 3-1/2” | A4704 |
| 11” x 4” | A4706 |
| 11” x 4-1/2 | A4708 |
| 11” x 5” | A4710 |
| Size | GBI Part # |
| 11” x 5-1/2” | A4712 |
| 11” x 5-3/4” | A4714 |
| 11” x 6-5/8” | A4716 |
| 11” x 7” | A4718 |
| 11” x 7-5/8” | A4720 |
| 11” x 7-3/4” | A4722 |
| 13-5/8” x 4” | A4724 |
| 13-5/8” x 4-1/2” | A4726 |
| 13-5/8” x 5” | A4728 |
| 13-5/8” x 5-1/2” | A4730 |
| 13-5/8” x 5-3/4” | A4732 |
| 13-5/8” x 6-5/8” | A4734 |
| 13-5/8” x 7” | A4736 |
| 13-5/8” x 7-5/8” | A4738 |
| 13-5/8” x 7-3/4” | A4740 |
| 13-5/8” x 8-5/8” | A4741 |
| Size | GBI Part # |
| 13-5/8” x 9-5/8” | A4742 |
| 13-5/8” x 9-3/4” | A4760 |
| 13-5/8” x 9-7/8” | A4759 |
| 16-3/4” x 9-5/8” | A4743 |
| 16-3/4” x 10-3/4” | A4748 |
| 16-3/4” x 11-3/4” | A4750 |
| 16-3/4” x 11-7/8” | A4570 |
| 21-1/4” x 10-3/4” | A4752 |
| 21-1/4” x 11-3/4” | A4754 |
| 21-1/4” x 13-3/8” | A4756 |
| 21-1/4” x 13-5/8” | A4758 |
| 21-1/4” x 16” | A4588 |
| 26” x 16” | A4600 |
| 26” x 18-5/8” | A4602 |
| 30” x 22” | A4605 |
| 30” x 24” | A4608 |
Request a Quote for C21-P Casing Hangers
Our team is ready to supply the C21-P Casing Hanger for your high-load, manual-seal applications. Contact us today to discuss your technical requirements and receive a detailed quote.
FAQs
While both are non-automatic hangers, the C21-P is designed for high casing loads, whereas the standard C-21 is for lightweight applications. Additionally, the C21-P's seal is energized by applying torque to cap-screws, offering a different mechanism than the C-21's separate H-Packoff assembly.
A C21-P should be used in any high-load situation where the casing weight is insufficient to reliably energize an automatic seal. This is common in shallow wells with heavy casing strings or in any operation where a positive, mechanically verified seal is required before landing the full casing weight.
The seal is energized manually by tightening a series of cap-screws and lock-screws to a specified torque value. This applied torque mechanically compresses the packoff seal, creating a secure and reliable barrier in the wellhead. Our commitment to precise engineering is verified by our quality certifications.
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