Duodao Hi-tech District,Jingmen,China
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API 6A Well Control System Spare Parts

Product Introduction This curated assortment covers all mission-critical sealing, hydraulic, valve, and fastener components for drilling well control systems, including upper/lower IBOP valve assemblies, BOP seal elements, rotary actuators, wear/wiper rings, Polypak seal rings, Forum manifold gate valves, CAD/Cameron control unit valves, accumulator bladders, repair kits, relief valves, and API 6A RTJ gaskets (BX/R series) […]

Product Description

Product Introduction

This curated assortment covers all mission-critical sealing, hydraulic, valve, and fastener components for drilling well control systems, including upper/lower IBOP valve assemblies, BOP seal elements, rotary actuators, wear/wiper rings, Polypak seal rings, Forum manifold gate valves, CAD/Cameron control unit valves, accumulator bladders, repair kits, relief valves, and API 6A RTJ gaskets (BX/R series) with B7 stud bolts. All parts undergo factory hydrostatic pressure testing validated up to 15000Psi working pressure, with full material traceability and H2S service certification. The lineup features high-pressure sealing kits, durable hydraulic valves, corrosion-resistant fasteners, and precision BOP components, fully mapped to original OEM part numbers for simplified inventory management and emergency wellsite repairs.

Functional Performance Specifications

These well control spare parts deliver industry-leading safety and reliability: API 6A certified BOP seal elements provide 99.9% leak-free sealing at 15000Psi working pressure, eliminating well control fluid loss; accumulator bladders and control valves maintain consistent hydraulic pressure with 10,000+ cycle durability, ensuring instantaneous BOP actuation; Polypak seal rings resist extrusion under extreme pressure, cutting seal failure rates by 55%; RTJ BX/R gaskets deliver zero-leak flange connections, and H2S-certified components withstand corrosive drilling environments, reducing downtime by 70%.

Structural & Material Features

  • High-Pressure Sealing Components: BOP seal elements and Polypak rings use nitrile/elastomer compounds rated for H2S service, engineered to maintain sealing integrity at -20°F to 250°F and up to 15000Psi working pressure.
  • API 6A Fasteners: Stud bolts feature ASTM A193 Gr B7 alloy steel with A194 Gr 2H nuts, galvanized for corrosion resistance and torque retention in high-pressure flange connections.
  • Precision BOP Hardware: Rotary actuators and wear rings use hardened steel construction, reducing friction and extending BOP operating life under cyclic actuation.
  • Hydraulic Control Valves: CAD/Cameron control unit valves feature precision-machined spools and corrosion-resistant internals, ensuring consistent hydraulic flow and pressure regulation.
  • RTJ Gaskets: BX/R series ring gaskets use 316 stainless steel or soft iron cadmium plating, conforming to API 6A PSL-3 standards for zero-leak high-pressure flanging.

Applicable Operating Conditions

These spare parts are built for harsh onshore, offshore, and H2S-containing drilling environments, optimized for BOP stacks, choke & kill manifolds, top drive IBOP systems, and hydraulic BOP control units. They perform reliably in ambient temperatures ranging from -20°F to 250°F, resist exposure to drilling mud, corrosive H2S gas, high-pressure well fluids, and heavy rig vibration, and comply with API 6A, API 16A, and NACE MR0175 safety standards for well control equipment.

Maintenance & Service Recommendations

  • Inspect BOP seal elements, wear rings, and wiper rings every 6 months for swelling, cracking, or wear; replace degraded seals to maintain 15000Psi pressure integrity.
  • Test BOP control unit valves, accumulator bladders, and relief valves quarterly for leaks or pressure loss; overhaul with OEM repair kits to ensure instantaneous BOP actuation.
  • Check choke & kill manifold gate valves, stem packings, and bonnet gaskets semi-annually; replace worn components to prevent fluid leakage and maintain flow control.
  • Inspect API RTJ gaskets and B7 stud bolts annually for corrosion or deformation; replace damaged gaskets and retorque bolts to OEM specifications for flange sealing.
  • Calibrate pressure control valves and accumulator charging assemblies every 12 months to ensure consistent hydraulic pressure delivery.
  • Stock high-wear consumables (seal kits, bladders, gaskets, valves) at recommended minimum levels to eliminate unplanned well control system shutdowns.
  • We supply the following spare parts:
NoMaterial codeName of goodsSign Code/ P/NSpecificationsManufactureUnit
I. MATERIALS AND EQUIPMENT
100.085.004.02164Upper IBOP valve assy (PL2033294)-PL20320449 1/2″ OD, 3 1/16″ ID, 15000 Psi Working pressure, Box 6 5/S” IF Dowm x Pin 7 5/8″ REG RH, x 15 1/4″ LG, with External Splined x 1 l’B” Spline Length ( Pin end ), H2S certificates For Top Drive NOV PS2-500/500; PS2 500/500NOVset
200.111.085.00005Lower Seal, LFS-3,18-15M NXT/SLX– 11445843-001 NOVpee
300.111.085.00006Upper Seal, LFS-3, 18-15M NXT/SLX-20081038Old PN: 10738107-001NOVpee
400.111.085.00066Actuator, rotary, No helical gear-20083210:45P NOVpee
500.111.083.00027CONFIGURATION CNTL DWG, DOOR SEAL-20020311Door Seai for 11″-5000 Psi, LXT Ram BopShaffer (NOV)pee
600.111.086.00003Nitrite (Blue), BOP Saffer 11” X 5000 Psi– 150810 Shaffer (NOV)pee
700.111.099.00002Nitrile (Blue)– 150576eal element (nitrile), BOP Shaffer 13 5/8″ x 5000 PsiNOVpee
F – BOP CAMERON 18 3/4″ 10000 Psi DL ANNULAR
800.111.084.00047Wear Ring, .125 X 1.500 X 44.563 0D; Item 55– 699345-13 Cameronpee
900.111.084.00048Wiper Ring, 36.000 ID X 37.000; Item 57– 705710 Cameronpee
1000.111.084.00049Seal Ring, 24,625 ID X 25.625 OD X .500 X ,750, Polypak /CIW X -3028 -15; Item 58– 615850-08-01 Cameronpee
1100.111.084.00050Seal Ring, 26.625 ID X27.375 OD X.375x .500, Polypak /CIWX -3028-15; Item 59-615851-02-01 Cameronpee
1200.111.084.00051Seal Ring, 36.00 ID X 37-OOOD X.500, Polypak /CIW X -3028-15; Item 60– 615846-16-01 Cameronpee
1300.111.084.00052Seal Ring, 28.188 ID X 29 .188 OD X 500 X .750, Polypak /em x-3028-15; Item 61-615850-09-01 Cameronpee
1400.111.084.00053Seal Ring, 48.50 ID X 49.50 OD X .500, Polypak/CIW X-3028-15; Item 62– 615846-15-01 Cameronpee
1500.111.084.00054Seal Ring, 45.50 ID X46.50 OD X .500 X .750, Polypak/CIW X-3028-15; Item 66-615850-01-01 Cameronpee
1600.144.013.00004Seal Ring, Vulcanized 57 9/32″ Od X 5/8″ Cs X 1/2″ (Top Od Lip Seal)-2724543-01 Cameronpee
1700.111.084.000550 Ring, Size AS -568-3302.100 ID X .210 w 90D /MS -1078 Nitrile Pkg And QUAL/COT 702645; Item 75– 702645-33-01 Cameronpee
G – CHOKE AND KILL MANIFOLD, FORUM
1800.144.013.00054Gate valve 3.1/16″ 15,000 PSIWP Manual, API 6A PSL-3, Mat. Class ‘DD’, Temp Class ‘P+X’ H2S Service  Forumpee
1900.144.013.00015Bonnet Gasket– PA-0010 FORUMpce
2000.144.013.00053Stem Packing– BA-0051 FORUMpce
2100.144.013.00051O Ring, Bearing Cap– OC-0355 FORUMpce
2200.144.013.00018ORing, Stem Adaptor (069-0229-01)– OC-0229 FORUMpce
H – BOP CONTROL UNIT, MODEL: CAD 87012790U2, S/N: 0909-080333-01
2300.144.0 Ỉ2.00027Filter/Drier Replacement Element Eliminizer-90300115 CADpce
2400.144.012.00025Valve, Check 1/4″ 6000 psi Tube X Tube-75720111 CADpce
2500.144.012.00002Valve, 1″ Selector Valve W/Pnuematic Integral Actuator– 75800100 CADpce
2600.144.012.00023Core, Valve (Accumulator)– 10350140 CADpce
2700.144.004.02090O-Ring, PN: 10350143– 10350143 CADpce
2800.144.004.02091Back-Up Ring, PN:10350190-10350190 CADpce
2900.144.004.02092O-Ring, PN.-10350185– 10350185 CADpce
3000.144.004.02093Washer, Back-Up S.S., PN:10350180– 10350180 CADpce
3100.144.004.02094Ring, Anti-Extrusion s.s, PN:10350154– 10350154 CADpce
3200.144.004.02088Bladder (Standard), PN:10400105– 10400105 CADpee
3300.144.004.02096O-Ring, PN:10350179– 10350179 CADpee
3400.144.012.00028Valve, 1/2″ Manipulator Pneumatic Integral Actuator-75875100 CADpee
3500.144,012.00029Bladder(Standard)-10150105 CADpee
I – BOP/DIVERTER CONTROL UNIT.S/N: 112023132-01
3600.149.012.00008Repair kit, F/Hydraulic accum, 15 GAL 3000 psi– 2762423-09-99 Cameronset
3700.149.012.00009Repair kit valve, 1″ NPT, 3000 psi WP-2762401-31-99 Cameronset
3800.149.012.00010Relief vavle, set @ 3300 PSI, 1-1/2″ NPT-2185640-52 Cameronpee
3900.149.012.00011Relief vavle, 3/4″ NPTM inlet x 3/4″ NPTF outlet, 1300-3500 PSI-2185640-02 Cameronpee
4000.149.012.00012Valve panel 1/4″, 4-way 3-pos, 3000 psi– 309088-13 Cameronpee
4100.149.012.00013Vavle panel 1/4″, 4-way 3-pos, 3000 psi– 309088-08 Cameronpee
4200.149.012.00014Valve, 1/4″, 2-pos 4-way, 200 psi– 2762363-02 Cameronpee
4300.149.012.00015Bladder of 15 GAL, 3000 psi Accumulator– T-15-100 OIL AIRpee
4400.149,012.00016Oring of 15 GAL, 3000 psi Accumulator-11-410 OIL AIRpee
4500.149.012.00017Oring Back up of 15 GAL, 3000 psi Accumulator– 11-411 OIL AIRpee
4600.149.012.00007Charging & Gauging assembly, 3000 psi Top Repairable Accumulator 10500107 OTLAiRpce
K – BOLT AND GASKET RTJ 
4700.061,002.00870Stud Bolt with Two Nuts, l-7/8″-8UN X 17-1/4″ Long, ASTM A193 Gr B7(Bolt) / ASTM A194 Gr 2Hr(Nut), Galvanized  pce
4800.061.002.00946Stud bolt with Two Nuts 1 5/8″- 8UN X 12-1/2″ Long For flange 13-5/8″ X 5,Q00psi, Metric dimension per API 6A, ASTM A193 Gr B7( Bolt)/ ASTM A194 Gr 2H ( Nut), Galvanized  pce
4900.111,016.00853Ring Gasket BX164, PSL 3,316 SST  pce
5000.111.016.00857Ring Gasket BX160, PSL 3,316 SST  pce
5100.111.016.00856Ring Joint Gasket, BX-159, SS 316 DRG.NO.SD-8155-2  pce
5200,040.009.04155Ring Gasket BX158 –  pce
5300.111.016.00891Ring gasket, soft iron cadmium plated. R-74  pce
5400.111.016.00890Ring gasket, soft iron cadmium plated. R-73  pce
5500.085.007.00821Ring gasket SS316, PN:R 54  pce
5600.085.007.00820Ring gasket SS316, PN:R 50  pce
5700.040.009.03336Ring, Gasket, R35  pce
5800.111.016.00861Ring Joint Gasket, BX-154, SS316 DRG. NO, SD-2539-2  pce

Field Failure Repair Case Studies

Case 1: Shaffer BOP Lower Seal Degradation

A worn LFS-3 lower seal on an 18-3/4” 15000Psi Shaffer BOP caused pressure leakage during well testing, compromising well control safety. Installing the OEM NOV lower seal assembly restored full pressure sealing and resumed safe drilling operations.

Case 2: CAD Control Unit Accumulator Bladder Leak

A ruptured accumulator bladder in a CAD 87012790U2 BOP control unit led to hydraulic pressure loss, disabling BOP actuation. Replacing the OEM standard bladder and O-ring kits restored hydraulic pressure and BOP functionality.

Case 3: Forum Manifold Gate Valve Stem Packing Failure

Degraded stem packing on a 3-1/16” 15000Psi Forum gate valve caused fluid leakage in the choke & kill manifold, disrupting well control operations. Swapping in OEM stem packing and O-rings eliminated leaks and restored flow control.

Frequently Asked Questions (FAQ)

QuestionAnswer
Are these parts compatible with NOV Shaffer and Cameron BOP systems?Yes, these spares are OEM-matched for NOV Shaffer ram/annular BOPs, Cameron DL annular BOPs, and matching well control components.
Do these well control parts meet API 6A and H2S service standards?Absolutely, all components comply with API 6A PSL-3 and NACE MR0175 standards, certified for H2S and high-pressure well control service.
What key sealing and hydraulic parts are included?This catalog includes BOP seal kits, accumulator bladders, gate valves, RTJ gaskets, control valves, and fasteners for full well control system maintenance.

Procurement Guidance

This well control system spare parts catalog serves as both a formal oilfield procurement benchmark and a life-critical technical troubleshooting reference, designed to eliminate the risks of substandard aftermarket parts that fail under 15000Psi high pressure, reduce long-term well control maintenance expenses, and uphold the strictest global drilling safety and environmental standards. Every part is a verified API-certified component that guarantees perfect fitment, consistent high-pressure performance, and full regulatory compliance, making it the definitive resource for maintaining BOP stacks, control units, and choke & kill manifolds.

Product Description