CAMTOP C21-P Casing Hanger — wrap-around slip-type hanger with manual energized seal for high casing load applications where casing weight cannot energize a packoff seal. Torque-controlled cap-screw and lock-screw energizing. 7″–30″, API Monogrammed, PSL 1-3, AA-HH.
C21-P Casing Hanger – Manual Energized Seal for High Load
Description
CAMTOP C21-P Casing Hanger — Manual Energized Seal, High Load
The CAMTOP C21-P Casing Hanger 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
- Manual Energized Seal
- High Casing Load Capacity
- Controlled Torque Energizing
- Field-proven with over 35 years of equivalent service history
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.
Product Images
C21-P Casing Hanger Specifications
All sizes are available API Monogrammed, PSL 1-3, Material class AA, BB, CC, DD, EE, FF, HH
| Size | 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 |
| 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 |
| 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 |
FAQs
What is the main difference between a C21-P and a standard C-21?
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.
When should a C21-P be used instead of an automatic hanger?
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.
How is the seal energized on a C21-P?
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.
Why Choose CAMTOP
- Manual positive seal — torque-controlled energizing independent of casing weight
- API Monogrammed or non-monogrammed options, PSL 1-3, material classes AA-HH
- Interchangeable design — compatible with industry-standard C21-P interfaces
- Factory testing — load-tested and dimensionally inspected before shipment
- 24/7 technical support — direct engineering line for selection and installation
Ordering Information
Specify the part number from the size chart above, or contact us with your casing and wellhead sizes for a detailed quote.
Contact CAMTOP for Orders & Technical Support
Email: sales@cposl.com
Phone/WhatsApp: +86-18621723891
Address: No.432, Fute North Road, Pudong District, Shanghai, China
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