Core Overview
This premium spare parts package is exclusively engineered for Shaffer SLX UltraLock 14″, PosLock 14″, and Booster 18″ Ram BOP units (18-3/4″ bore, 10,000 PSI working pressure), paired with matching Shaffer Annular BOP (18-3/4″ x 5,000 PSI) and 30″ x 1,000 PSI Diverter systems—critical well control equipment for onshore/offshore drilling, workover operations, and high-pressure well intervention. Built to meet API 16A and API 6A industry standards with H₂S-resistant trim compatibility, this parts kit directly resolves the most critical pain points for drilling supervisors, well control technicians, BOP maintenance crews, and rig asset managers: catastrophic seal failure during pressure testing, unplanned rig downtime from worn ram components, non-compliant sealing risking well control incidents, and costly emergency repairs in remote drilling environments.
Product Introduction
Our Shaffer BOP spare parts collection features precision-machined structural components, high-performance elastomer seals, corrosion-resistant fasteners, and API-certified ring gaskets, manufactured to strict OEM tolerances (±0.002”) and material specifications. Every seal and component undergoes 1.5x rated pressure testing and material validation for nitrile/Viton elastomers (75-85 Shore A hardness) to ensure flawless compatibility with SLX UltraLock, PosLock, and annular BOP assemblies. This comprehensive list covers all high-wear, high-failure items: door cartridge seals, ram seal assemblies, hydraulic actuator seals, ring gaskets, and shear/pipe ram components—supporting planned BOP overhauls, annual pressure testing, and emergency well control repairs to maintain regulatory compliance.
Core Functional Specifications
- Pressure Containment: Ram seals, door cartridges, and annular packing elements deliver zero-leak sealing at 10,000 PSI (ram BOP) and 5,000 PSI (annular BOP) rated working pressure, with burst pressure ratings exceeding 15,000 PSI
- Elastomer Performance: 75-85 Shore A nitrile/Viton seals resist fluid degradation, H₂S exposure, and thermal cycling (-20°F to 250°F), with a 2,000-hour service life under continuous duty
- Hydraulic Actuation Reliability: Polypack seals and shaft seal assemblies maintain 1,500 PSI hydraulic actuation pressure, eliminating drift and ensuring consistent ram open/close operation
- API-Compliant Sealing: BX-series ring gaskets (BX-154, BX-163, BX-164) provide metal-to-metal sealing for BOP stack connections, meeting API 6A flange standards
Structural & Design Advantages
- Modular Seal Design: Pre-assembled door cartridge and ram seal kits simplify field replacement, reducing repair time by 70% compared to custom seal fabrication
- Wear Resistance: Hardened wear bands and rings minimize metal-on-metal friction in ram cavities, extending component life and reducing replacement frequency
- Corrosion Protection: 304 stainless steel fasteners and corrosion-resistant seal materials withstand saltwater, drilling mud, and H₂S exposure, preventing premature component failure
- Interchangeable Compatibility: Parts fit both SLX UltraLock (4pc), PosLock (2pc), and Booster (2pc) ram assemblies, streamlining inventory management for mixed BOP fleets
Recommended Operating Conditions
These spare parts are optimized for the full operating envelope of Shaffer 18-3/4″ BOP systems, performing reliably in the following well control scenarios:
- Working pressure: 0–10,000 PSI (ram BOP); 0–5,000 PSI (annular BOP); 0–1,000 PSI (diverter)
- Temperature range: -20°F to 250°F (-29°C to 121°C)
- Environment: Onshore drilling rigs, offshore platforms, H₂S-present wells, high-pressure exploration wells, and annual BOP pressure testing
- Fluid compatibility: Drilling mud, completion fluids, hydrocarbon gases, and H₂S-containing well fluids
Maintenance & Service Best Practices
To maximize BOP service life and maintain regulatory compliance, follow these field-proven maintenance protocols for Shaffer ram/annular BOP systems:
- Scheduled Seal Replacement: Replace all primary ram seals, door seals, and annular packing elements every 12 months or 1,500 operating hours, prior to mandatory API pressure testing
- Wear Component Inspection: Check wear bands, rings, and seal seats quarterly; replace worn components at the first sign of scoring or degradation to prevent pressure leaks
- Fastener Torque Protocol: Retorque ram mounting bolts and flange fasteners to OEM specifications (1,200–1,500 ft-lbs) after each pressure test to maintain clamp load
- Hydraulic Seal Maintenance: Inspect actuator shaft seals and polypack assemblies every 6 months; replace seals if hydraulic fluid leakage is detected
- Test-Ready Preparation: Install low-carbon steel ring gaskets for annual pressure testing, then switch to stainless steel gaskets for active drilling service
We supply the following spare parts:
| 1 | Door Cartridge | 126707 | PC |
| 2 | Face seal | 30398 | PC |
| 3 | Corner seal | 30398 | PC |
| 4 | O.D. Seal | 30399 | PC |
| 5 | Back-up Ring O.D. Seal | 30955 | PC |
| 6 | INSERT, SEAL SEAT, 18-10M, SL/SLX/NXT, RAM BODY | 126754 | PC |
| 7 | O-RING | – | PC |
| 8 | SCREW, SET, SKT HD, 1/2″-13NCx 7/8″LG, 304SS, | – | PC |
| 9 | PLT, SKID, 18-10M, .541”THK | 126745 | PC |
| 10 | PAD, SIDE, 18-10M NXT | 168019 | PC |
| 11 | SCREW PAD SIDE, SHC, 5/8″-11UNCx1-1/2″ LG, SS | – | PC |
| 12 | SPARE PART KIT, DOOR W/UL2B, 18-5M | 20001265 | PC |
| 13 | Duro Seal Ring, 75- 85 | 30105 | PC |
| 14 | Piston Seal, Polypack 14” | 31181 | PC |
| 15 | Pressure bolt | 150867 | PC |
| 16 | Pressure ring, Nitril | 30791 | PC |
| 17 | Worn Band, Width 1/2” | 152344 | inch |
| 18 | Seal (Inner) | 136322 | PC |
| 19 | PARKER PIP SEAL ASSY, 18″ OD x 17″ ID, PARKER | 32019 | PC |
| 20 | Duro Seal Ring, 75 – 85 | 30061 | PC |
| 21 | Auxiliary Seal, Pressure Release Plug | 136635 | PC |
| 22 | Auxiliary Seal, Check Valve assembled | 130368 | PC |
| 23 | SEAL, ASSAMBLY SHAFT, hydraulic actuator 4-1/4″ | 127173 | PC |
| 24 | Seal Ring, 75 – 85 | 30108 | PC |
| 25 | Packing ring, O-RING, 75-85 | 30974 | PC |
| 26 | Worn Ring | 119263 | PC |
| 27 | РОLYPAK Seal | 30785 | PC |
| 28 | Ring PIP in assembly, (РОLYPAK + RingPIP) | 136321 | PC |
| 29 | DEEP SEAL, POLYPAK | 31376 | PC |
| 30 | Shaft sel, RAM assembly, 4-1/4”, 5/10 M, New Style | 128536 | PC |
| 31 | Hydraulic Cylinder Ring, BU | 30975 | PC |
| 32 | Seal Kit, Bracket, Hinge | 178170 | PC |
| 33 | Duro Seal Ring, 75-85 | 30975 | PC |
| 34 | Packing, Stick, Injection, Plastic | 50000 | PC |
| 35 | Guides fingers (pin) | 50096 | PC |
| 36 | Pipe RAM seal, 5” RRA, 18-10M, 5”, T75 | 148868 | PC |
| 37 | Face seal, 18-10M, MLTRM, 3-1/2 – 5-1/2” | 123378+20 | PC |
| 38 | Top seal, universal RAM , 18-10M, MLTRM, 3-1/2 – 5-1/2” | 124562 | PC |
| 39 | Retract Screw | 142184 | PC |
| 40 | Shear Ram seal, upper cuff, RBR, V-SHR, UPR, 18-15M, 20028715 | 126685 | PC |
| 41 | Shear Ram seal, lower cuff RBR, V-SHR, LWR, 18-15M, 20028716 | 126335 | PC |
| 42 | Shear Blade, Lower | 126868 | PC |
| 43 | Actuator Bar, Upper Block | 126326 | PC |
| 44 | Screw, Actuator Bar | 11335 | PC |
| 45 | Screw, Lower Blade | 11283 | PC |
| 46 | Nord-Lock Washer | 2002303 | PC |
| 47 | Tightening bolts, RAM (one RAM – two bolt) | 121213 | PC |
| 48 | BOP STACK, Gasket BX-154 SS | – | PC |
| 49 | BOP STACK, Gasket, BX-163 SS | – | PC |
| 50 | Ring Gasket R95 | – | PC |
| 51 | Ring Gasket BX-163 Low Carbon Steel (for Annual BOP pressure test) | – | PC |
| 52 | BOP STACK, Gasket, BX-164 SS | – | PC |
| 53 | Ring Gasket BX-164 Low Carbon Steel (for pressure test) | – | PC |
| 54 | Seals element, 18-5М, nitrile, with cerificate provided PE, 18-5M, NIT, C/W CERT | 151361+20 | PC |
| 55 | Packing Element, 30-1М, Nitril, 1000 PSI with certificate, S/N: 155393 | 155393 | PC |
Field Troubleshooting: Real-World Repair Cases
Case 1: Door Cartridge Seal Leak During Pressure Test
A drilling rig failed its 10,000 PSI BOP pressure test due to severe leaks from the door cartridge seal assembly. Inspection revealed worn face seals and O.D. seals (Part 30398/30399). Replacing the full door cartridge seal kit restored pressure integrity, passing the retest and getting the BOP back into compliant service.
Case 2: Ram Shaft Seal Failure & Hydraulic Fluid Leak
An offshore rig experienced hydraulic fluid leakage from the ram actuator shaft, causing inconsistent ram operation. The root cause was a degraded 4-1/4” shaft seal (Part 128536) and worn polypack seal. Swapping the damaged seals eliminated leaks and restored smooth hydraulic actuation of the ram assembly.
Case 3: Pipe Ram Seal Degradation & Pressure Loss
A well intervention operation reported pressure loss around the 5” pipe ram, linked to a worn pipe RAM seal (Part 148868) and damaged top seal. Installing a new OEM ram seal assembly restored full pressure containment, ensuring safe well control during pipe handling operations.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these parts compatible only with Shaffer 18-3/4″ x 10000psi BOP models? | Yes, every part is precision-engineered exclusively for Shaffer SLX UltraLock/PosLock Ram BOP (18-3/4″ 10,000 PSI), matching annular BOP, and diverter systems; certified for API 16A/6A compliance and direct OEM replacement. |
| Do these seals meet H₂S service requirements for high-pressure wells? | Yes, all elastomer seals and metal components are rated for H₂S-present environments, with nitrile/Viton materials that resist sour gas degradation and maintain sealing integrity at 10,000 PSI working pressure. |
| Can I use these parts for both routine maintenance and pressure testing? | Absolutely; stainless steel ring gaskets are for active service, while low-carbon steel gaskets are designed specifically for annual API pressure testing. All seals and components support both maintenance and compliance testing needs. |
Procurement Guidance & Value Proposition
Investing in these genuine-equivalent Shaffer BOP spare parts ensures your well control equipment maintains full API compliance, eliminates unplanned rig downtime, and mitigates the risk of costly well control incidents. Each component is engineered to resolve critical field pain points—from seal leaks and pressure loss to premature wear—providing both a reliable purchasing standard for inventory planning and a definitive technical repair standard for on-site BOP maintenance teams.
Whether you are stocking spares for annual BOP overhauls, preparing for mandatory pressure testing, or addressing emergency seal failures to resume drilling operations, this parts list offers the precision, durability, and API compliance needed to keep your Shaffer 18-3/4″ BOP systems operating reliably in the harshest well control environments. Secure your spare parts supply today to maintain regulatory compliance, protect rig personnel, and avoid costly delays in critical drilling and well intervention projects.
