Tool Accessories
Ceramic Disc Sub
The Ceramic Disc Sub is a simple and economical tool used for snubbing and pump-out applications. The disc sub uses a proven ceramic burst disc with a concave shape that provides outstanding pressure resistance below the sub, as well as excellent resistance to harsh chemicals and temperature variations downhole. A dual disc option is available that provides high pressure resistance both above and below the sub.
The disc sub is run on the bottom of the tubing or below a production packer. After setting the packer, the disc is burst to allow for production. The single disc option can be opened with pressure or a drop bar, while the dual disc option must be opened with a drop bar. The sub’s full open ID after pump out allows for unrestricted flow through the tubing with little to no debris left in the wellbore.
D&L offers the Ceramic Disc Sub in a variety of sizes, configurations, and ODs for a wide range of applications.

Product Specifications
| Tubing Size (inches) | Tool OD (inches) | Tool ID (inches) | Pressure Rating (psi) | Thread Connections | Part Number | Technical Data |
|---|---|---|---|---|---|---|
| 2-3/8 | 3.04 | 2.00 | 1K ABOVE / 10K BELOW | 2-3/8 EUE BOX UP / HALF MULE SHOE | 59220MS | |
| 2-3/8 | 3.04 | 2.00 | 10K ABOVE / 10K BELOW | 2-3/8 EUE BOX UP / HALF MULE SHOE | 59220MS-2 | |
| 2-3/8 | 3.04 | 2.00 | 1K ABOVE / 10K BELOW | 2-3/8 EUE BOX UP / 2-3/8 EUE PIN DOWN | 59220BP | |
| 2-3/8 | 3.04 | 2.00 | 10K ABOVE / 10K BELOW | 2-3/8 EUE BOX UP / 2-3/8 EUE PIN DOWN | 59220BP-2 | |
| 2-3/8 | 2.91 | 2.00 | 1K ABOVE / 10K BELOW | 2-3/8 EUE BOX UP / 2-3/8 EUE PIN DOWN | 59220SBP | |
| 2-7/8 | 3.65 | 2.45 | 1K ABOVE / 10K BELOW | 2-7/8 EUE BOX UP / HALF MULE SHOE | 59227MS | |
| 2-7/8 | 3.65 | 2.45 | 10K ABOVE / 10K BELOW | 2-7/8 EUE BOX UP / HALF MULE SHOE | 59227MS-2 | |
| 2-7/8 | 3.65 | 2.45 | 1K ABOVE / 10K BELOW | 2-7/8 EUE BOX UP / 2-7/8 EUE PIN DOWN | 59227BP | |
| 2-7/8 | 3.65 | 2.45 | 10K ABOVE / 10K BELOW | 2-7/8 EUE BOX UP / 2-7/8 EUE PIN DOWN | 59227BP-2 | |
| 2-7/8 | 3.46 | 2.45 | 1K ABOVE / 10K BELOW | 2-7/8 EUE BOX UP / 2-7/8 EUE PIN DOWN | 59227SBP | |
| 3-1/2 | 4.50 | 2.99 | 1K ABOVE / 10K BELOW | 3-1/2 EUE BOX UP / HALF MULE SHOE | 59235MS | |
| 3-1/2 | 4.50 | 2.99 | 10K ABOVE / 10K BELOW | 3-1/2 EUE BOX UP / HALF MULE SHOE | 59235MS-2 | |
| 3-1/2 | 4.50 | 2.99 | 1K ABOVE / 10K BELOW | 3-1/2 EUE BOX UP / 3-1/2 EUE PIN DOWN | 59235BP | |
| 3-1/2 | 4.50 | 2.99 | 10K ABOVE / 10K BELOW | 3-1/2 EUE BOX UP / 3-1/2 EUE PIN DOWN | 59235BP-2 | |
| 3-1/2 | 4.18 | 2.99 | 1K ABOVE / 10K BELOW | 3-1/2 EUE BOX UP / 3-1/2 EUE PIN DOWN | 59235SBP |