we design & manufacture ram blocks
We design and manufacture all of our ram blocks here in Channelview, TX. Our BOP Rams / ram blocks are 100% interchangeable with all major OEM ram blocks, packers, and top seals such as Shaffer/NOV, T3, Cameron, and more. We offer a pipe bore ram blocks, variable bore ram blocks, as well as shear ram blocks. We have ensured our products are safe and interchangeable through repeated design and development, testing, as well as validation through calculations and simulated testing. It is crucial to purchase these critical products directly from the Original Equipment Manufacturer such as Fabritech, to ensure you get the right equipment, expertise, and support throughout your project.
What is a BOP Ram Block or Ram Blocks?
A BOP ram block, or ram blocks are critically machined pieces of metal that works together with elastomeric ram packers and sometimes top seals to affect a seal in the wellbore cavity of a blowout preventer. Ram blocks can be either Pipe bore rams, variable bore ram blocks, or shear ram blocks. BOP Rams (AKA: Ram blocks), literally ram together towards an open hole, or a pipe and allows the control of the pressure underneath the ram blocks. Ram blocks are extremely critical to the drilling operations, and may also help during stripping operations and or kicks in wells. Pipe bore ram blocks are designed with the intended drilling pipe in mind (or casing depending on size), while Variable bore ram blocks are designed to offer a range of compatible pipe sizes to close on. Shear ram blocks are designed to shear drill pipe in an emergency, and may also be offered with the ability to close off the well (Shear Blind Ram Blocks). See below the types of ram blocks we manufacture.
Fabritech Model R1® Ram Blocks
What is a BOP Ram Block or Ram Blocks?
A BOP ram block, or ram blocks are critically machined pieces of metal that works together with elastomeric ram packers and sometimes top seals to affect a seal in the wellbore cavity of a blowout preventer. Ram blocks can be either Pipe bore rams, variable bore ram blocks, or shear ram blocks. BOP Rams (AKA: Ram blocks), literally ram together towards an open hole, or a pipe and allows the control of the pressure underneath the ram blocks. Ram blocks are extremely critical to the drilling operations, and may also help during stripping operations and or kicks in wells. Pipe bore ram blocks are designed with the intended drilling pipe in mind (or casing depending on size), while Variable bore ram blocks are designed to offer a range of compatible pipe sizes to close on. Shear ram blocks are designed to shear drill pipe in an emergency, and may also be offered with the ability to close off the well (Shear Blind Ram Blocks). See below the types of ram blocks we manufacture.
Fabritech Model R1® Ram Blocks
- Design/Application:
- Fabritech MS, Inc. manufactures Model R1 ram blocks for Model R1 Ram Blowout Preventers. Model R1 Ram Blocks are used in Drilling Production and well control operations. Our Model R1 BOP ram blocks are offered in Pipe bore, variable bore, and shear blind ram variations. Model R1 BOP Ram Blocks are designed for maximum safety factor, and can be used in mud, gas, oil and sour gas service*.
- Key Features:
- Easily recognizable based on the popular design created by Cameron.
- 100% interchangeable with Cameron Type U and UM Ram blocks, 100% compatible with Cameron Type U and UM BOP's.
- Top seals and packers easy to service and replace in the field.
- Top seals and packers usually in stock at our facility, and are readily available from multiple aftermarket vendors.
- Specs:
- Working Pressure(s): 3,000 PSI , 5,000 PSI , 10,000 PSI, 15,000 PSI.
- BOP Size: 7-1/16", 11", 13-5/8", 16-3/4", 18-3/4", 20-3/4", 21-1/4", 26-3/4"
- Bore Size: Blind (CSO), SBR, VBR, and standard Pipe and Casing Sizes.
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Fabritech Type F70A® Ram Blocks
- Design/Application:
- Fabritech MS, Inc. manufactures Model F70A ram blocks for Model L1 Ram Blowout Preventers. Model F70A Ram Blocks are used for Drilling Production and well control operations. Our F70A BOP ram blocks are offered in Pipe bore, variable bore, and shear ram variations. Our BOP ram blocks offer maximum safety factor, and can be used in mud, gas, oil and sour gas service.
- Key Features:
- Easily recognizable based on the popular design created by Shaffer/NOV.
- 100% interchangeable with Shaffer Type 70 Ram blocks, 100% compatible with Shaffer/NOV LWS/SL/SLX BOP's.
- Packers easy to service and replace in the field.
- Ram Holders 100% interchangeable.
- Retracting screws 100% interchangeable
- Packers usually in stock at our facility, and are readily available from multiple aftermarket vendors.
- Specs:
- Working Pressure(s): 3,000 PSI , 5,000 PSI , 10,000 PSI, 15,000 PSI.
- BOP Size: 7-1/16", 11", 13-5/8", 16-3/4", 18-3/4", 21-1/4"
- Bore Size: Blind (CSO), and standard Pipe and Casing Sizes.

type-f70a-ram-block-spec-sheet.pdf | |
File Size: | 137 kb |
File Type: |
Fabritech Vari-Ram® Blocks
- Design/Application:
- Fabritech MS, Inc. manufactures Model Vari-Ram blocks for Model L1 Ram Blowout Preventers. Model Vari-Ram Ram Blocks are used for Drilling Production and well control operations. Our Model L1 ram blocks are designed for maximum safety factor, and can be used in mud, gas, oil and sour gas service. All Vari-Ram® blocks come with pipe area lip with Inconel Inlay for improved performance during hang-off.
- Key Features:
- Easily recognizable based on the popular design created by Shaffer/NOV.
- 100% interchangeable with Shaffer Multi-Ram blocks, 100% compatible with Shaffer/NOV LWS/SL/SLX BOP's.
- Packers and top seals are easy to service and replace in the field.
- Packers usually in stock at our facility, and are readily available from multiple aftermarket vendors.
- Specs:
- Working Pressure(s): 2,000 PSI, 3,000 PSI, 5,000 PSI, 10,000 PSI, 15,000 PSI
- BOP Size: 7-1/16", 11", 13-5/8", 18-3/4", 20-3/4", 21-1/4"
- Bore Size: 2-3/8" to 2-7/8", 2-3/8" to 3-1/2", 2-7/8" to 5", 2-3/8" to 3-1/2", 3-1/2" to 5", 5" to 7", 3-1/2" to 5-1/2", 4-1/2" to 7".

vari-ram-block-spec-sheet.pdf | |
File Size: | 180 kb |
File Type: |
Fabritech Type F61E® Ram Blocks
- Design/Application:
- Fabritech MS, Inc. manufactures Type F61E ram blocks for Model L1 Ram Blowout Preventers. Type F61E Ram Blocks are used for well servicing, workover, and small-bore drilling operations. Our Type F61E ram blocks are offered in pipe and variable bore ram block configurations. Type F61E are designed for maximum safety factor, and can be used in mud, gas, oil and sour gas service.
- Key Features:
- Easily recognizable based on the popular design created by Shaffer/NOV.
- 100% interchangeable with Shaffer Type 61 Ram blocks, 100% compatible with Shaffer/NOV BOP's.
- Packers easy to service and replace in the field.
- Ram Holders 100% interchangeable.
- Retracting screws 100% interchangeable
- Packers usually in stock at our facility, and are readily available from multiple aftermarket vendors.
- Specs:
- Working Pressure(s): 3,000 / 5,000 PSI
- BOP Size: 7-1/16"
- Bore Size: Blind (CSO), 1-1/4", 1-1/2", 1-3/4", 2-1/16", 2-3/8", 2-7/8", 3-1/2", 4", 4-1/2".
Fabritech Type FLXR® Ram Blocks
- Design/Application:
- Fabritech MS, Inc. manufactures Type FLXR ram blocks for Model FLXR Ram Blowout Preventers. Our Type FLXR Ram Blocks are used for well servicing, workover, and small-bore drilling operations. Our Type FLXR ram blocks are designed for maximum safety factor, and can be used in mud, gas, oil and sour gas service.
- Key Features:
- Easily recognizable based on the popular design created by Shaffer/NOV.
- 100% interchangeable with Shaffer LXT and Sentinel II Ram blocks, 100% compatible with Shaffer/NOV LXT and Sentinel II BOP's .
- Packers and top seals easy to service and replace in the field.
- Packers and top seals usually in stock at our facility, and are readily available from multiple aftermarket vendors.
- Specs:
- Working Pressure(s): 3,000 / 5,000 PSI
- BOP Size: 7-1/16"
- Bore Size: Blind (CSO), 1-1/4", 1.315", 1.660", 1.900", 2-1/16", 2-3/8", 2-7/8", 3-1/2", 4", 4-1/2", 5", 5-1/2".