FH1835NL-06 Seal & FZ35-35U FZ54-35U BOP Spare Parts

Introduction

In oilfield drilling and well control operations, the reliability of blowout preventers (BOPs) is non-negotiable—they are the last line of defense against well fluid leakage, blowouts, and environmental disasters. Every BOP, whether it’s a FZ35-35U Ram BOP with tandem booster, a FZ54-35U Ram BOP, or a 4 1/16 10000psi Quad BOP with stripper packer, relies on high-quality spare parts and sealing components to function properly. A single faulty part—such as a leaking FH1835NL-06 Seal-Adapter Ring I.D., a worn FH2321NL.15-00 Seal-Piston O.D., or a damaged H09.12.01 Seal-Shell—can lead to unplanned downtime, costly equipment repairs, well control failures, and even pose risks to on-site personnel safety. These issues are compounded in harsh oilfield environments, where high pressure, well fluid corrosion, extreme temperature fluctuations, and frequent BOP actuation push spare parts to their limits, exposing the unreliability of low-quality alternatives.

The spare parts and sealing components listed—including FH1835NL-06 Seal-Adapter Ring I.D., H22.08.00 Seal-Adapter Ring I.D., FH2321NL.15-00 Seal-Piston O.D., H09.08.00 Seal-Adapter Ring I.D., 80×3.55(IDXd) O-ring, and the full range of 003().00, 017()-00, 022()-00 series spare parts—are precision-manufactured for direct drop-in replacement with specific BOP models. They are fully compatible with a wide range of BOPs, including FZ35-35U (with tandem booster), FZ35-70U, FZ35-70UM, FZ35-105UMK, FZ53-21U (SheaRing), FZ54-14U, FZ54-35U, FZ68-21U Ram BOPs, 4 1/16 10000psi Quad BOPs with stripper packers, FH18-21NL & FH18-35NL Annular BOPs, and FZ18-21LWS / FZ18-35LWS single and double ram BOPs. These BOPs are widely used by major oilfield service providers such as Honghua, Jereh, Weatherford, and NOV in onshore and offshore drilling operations, and our spare parts perfectly match their operational requirements—including the 10,000psi (68.95 MPa) working pressure of the 4 1/16 10000psi Quad BOP and the tandem booster configuration of FZ35-35U and FZ35-70U BOPs.

Our product line targets three core user groups with distinct needs: well control maintenance teams that require fast, reliable spare parts for daily inspections and emergency repairs to minimize downtime (a critical need, as BOP failure can cost up to $9,000 per hour in downtime); BOP operators who depend on durable, consistent spare parts to ensure safe well control operations and compliance with industry safety regulations; and procurement departments seeking standards-compliant, long-lasting spares that reduce long-term maintenance costs and operational risks. The core purpose of these spare parts is to solve critical industry pain points—including BOP adapter ring leakage, piston wear, shell seepage, hydraulic system contamination, inability to maintain pressure, and闸板开关不到位 (a common BOP fault)—ensuring tight sealing, stable BOP operation, and full adherence to global oilfield safety standards. Every component is designed to address common BOP faults identified in field operations, such as well fluid窜漏 into hydraulic cylinders and闸板关闭后试压不合格, making them indispensable for safe and efficient oilfield operations.

Product Overview

We supply a comprehensive range of high-quality BOP spare parts and sealing components, covering adapter ring seals, piston seals, shell seals, wear rings, O-rings, and complete spare part sets for various BOP models. Key products include FH1835NL-06 Seal-Adapter Ring I.D., H22.17.00 Seal-Piston O.D., FH2321NL.15-00 Seal-Piston O.D., H09.08.00 Seal-Adapter Ring I.D., 80×3.55(IDXd) O-ring, 003().00 Spare parts for FZ35-35U Ram BOP (With tandem booster), 022()-00 Spare parts for FZ54-35U Ram BOP, and 4R03.00 P02.00 Spare parts for 4 1/16 10000psi Quad BOP.

All spare parts are manufactured in strict compliance with the latest revised API Spec 16A (which has updated rated pressure ranges from 6.9 MPa to 207.0 MPa and metal material temperature level to T-350), API Spec 6A (for flange connections), GB/T 20174-2006 (for BOP equipment), and ISO 3601 (for O-ring dimensions). They also meet the requirements of EAC, GOST, and CE certifications, ensuring compatibility with global oilfield standards. Each unit undergoes 100% pressure testing (up to 103.4 MPa, 1.5 times the working pressure of 4 1/16 10000psi Quad BOPs) and leakage testing before leaving the factory, ensuring no defective products reach the field—addressing the common field issue of spare part failure during pressure test. Backed by 23 years of BOP spare part R&D and field service experience, our products have been deployed in 82 major oilfields worldwide, with a cumulative service life of over 1,750,000 hours in harsh oilfield environments. Our FH1835NL-06 Seal-Adapter Ring I.D. has a mean time between failures (MTBF) of 22,100 hours, while the FH2321NL.15-00 Seal-Piston O.D. lasts up to 36 months under continuous operation—14,500 hours and 15 months longer than the industry average, respectively. The 4R03.00 P02.00 Spare parts for 4 1/16 10000psi Quad BOP maintain stable performance after 1,900 cycles of BOP actuation, 650 cycles more than standard alternatives. All parts feature a drop-in replacement design, eliminating the need for BOP modifications and reducing maintenance time by up to 10.5 hours per replacement—critical for minimizing downtime during emergency well control. Each component also comes with a certificate of conformity (CoC) confirming compliance with API 16A requirements, and our wear rings meet the industry standard of ≥1000 switch cycles without failure, addressing the common fault of the gate is not fully opened or closed due to wear.

Key Product Functions

Every BOP spare part is engineered to address specific well control pain points—many of which are common BOP faults identified in field operations—with core functions focused on tight sealing, wear resistance, pressure durability, and contamination resistance, directly supporting safe BOP operation:

• Adapter Ring Seals & O-Rings: Adapter ring seals (FH1835NL-06, FH1835NL-10, H22.08.00, H09.08.00, H09.11.01, FH2321NL-10, FH2321NL.11-00) ensure proper alignment of O-rings, solving the problem of O-ring misalignment and leakage— a common cause of BOP voltage stabilization failed and well fluid leakage into hydraulic cylinders. O-rings (FH1835NL-04, FH1835NL-07, H22.10, H22.12, H09.09, H09.10, H09.12.02, H09.11.02, H09.15.02, 80×3.55, FH2321NL-05, FH2321NL-08) deliver static and dynamic sealing for BOP connections, preventing well fluid leakage and hydraulic system contamination—addressing the fault of moisture and gas contained in oil caused by seal failure.

• Shell & Piston Seals: Shell seals (FH1835NL-09, FH1835NL-11-00, H22.14.00, H09.12.01, FH2321NL-09, FH2321NL.12-00) provide reliable sealing for BOP shell assemblies, solving the problem of shell seepage that causes BOP body corrosion and the medium in the well flows out from the connection between the housing and the side door.. Piston seals (FH1835NL-16, H22.17.00, H09.15.01, FH2321NL.15-00) ensure tight sealing for BOP pistons, solving the problem of well fluid infiltration that damages hydraulic systems and causes piston wear—preventing the common fault of the hydraulic section fails to maintain stable pressure.

• Wear Rings: Wear rings (FH1835NL-08, FH1835NL-15, FH1835NL-12, H22.13, H22.16, H22.15, H09.14, H09.13, FH2321NL-14, FH2321NL-13) reduce friction between BOP pistons, shells, and adapter rings, solving the problem of component wear that leads to the gate valve fails to open or close properly or no action—one of the most common ram Blowout Preventer faults. They extend BOP component service life by 4.8 years and meet the ≥1000 switch cycle requirement, preventing wear-induced jamming.

• Complete Spare Part Sets: The 003().00, 017()-00, 022()-00, 027()-00, 035().00, and 4R03.00 P02.00 series spare part sets provide all necessary components for specific BOP models, solving the problem of mismatched or missing parts during maintenance—saving time and ensuring BOPs are restored to full functionality quickly.

Structural Features

Our BOP spare parts are designed with field practicality and durability in mind, incorporating structural features that directly address the harsh conditions of BOP operations—high pressure (up to 103.4 MPa for 4 1/16 10000psi Quad BOPs), well fluid corrosion, extreme temperatures (-35℃ to 130℃, meeting the T-350 temperature grade of the latest API Spec 16A), and frequent actuation—and solve common field faults:

• Adapter Ring Seals & O-Rings: Adapter ring seals are made of corrosion-resistant alloy steel with precision machining (dimensional accuracy of ±0.008 mm), ensuring O-ring alignment and preventing misalignment-induced leakage—a common cause of BOP voltage stabilization failed. O-rings are made of high-quality nitrile or fluororubber (depending on the application medium), with precise ID/OD dimensions (following GB/T 3452.1 standards) and a smooth surface to prevent leakage. The 80×3.55(IDXd) O-ring features a thickened cross-section to withstand high pressure and prevent extrusion, addressing the fault of O-ring damage under extreme pressure.

• Shell & Piston Seals: Shell seals are made of high-strength, corrosion-resistant materials with precision machining, ensuring tight sealing for BOP shell assemblies even under high pressure—preventing the medium in the well flows out from the connection between the shell and the side door.. Piston seals feature a reinforced fabric layer that enhances wear resistance and pressure tolerance, withstanding well fluid corrosion and preventing piston leakage. The H22.17.00 Seal-Piston O.D. has a flexible lip design that adapts to minor piston misalignment, reducing the risk of seal failure due to installation errors.

• Wear Rings: Made of high-strength PTFE with a low-friction surface (coated with PPG WHITFORD Xylan 1700 for enhanced wear resistance), these wear rings have dimensional accuracy of ±0.008 mm for a perfect fit. They are engineered to withstand ≥1000 switch cycles without failure, preventing the common fault of the gate valve fails to open or close properly. The FH1835NL-15 Wear Ring-Piston O.D. features a reinforced edge design that reduces stress concentration, extending its service life by an additional 3.5 months.

• Complete Spare Part Sets: Each spare part set (003().00, 017()-00, etc.) is pre-assembled and tested to ensure all components are compatible and functional, solving the problem of mismatched parts and reducing maintenance time. Components in the 4R03.00 P02.00 set are specifically designed for 4 1/16 10000psi Quad BOPs and stripper packers, ensuring perfect fit with the BOP’s 25.50” height and 23” outside diameter.

Applicable Working Conditions

Our BOP spare parts are specially engineered to withstand the harshest oilfield environments, perfectly suited for the extreme conditions of BOP operation—aligning with the temperature and pressure requirements outlined in the latest API Spec 16A and GB/T 20174-2006—and compatible with the common operating scenarios of the BOP models they serve:

• Offshore Oilfield BOP Systems: Adapt to high humidity (85–100% relative humidity), salt spray corrosion, and seismic intensity up to 8 degrees. Ideal for 4 1/16 10000psi Quad BOPs with 4R03.00 P02.00 spare parts, FH18-21NL & FH18-35NL Annular BOPs with H22 series seals, and FZ54-35U Ram BOPs with 022()-00 spare parts—where seal reliability is critical for preventing marine environmental pollution and addressing offshore-specific faults like salt spray-induced corrosion.

• Onshore High-Pressure Oilfields: Withstand ambient temperatures from -35℃ to 130℃ and working pressures up to 103.4 MPa (15,000 psi)—1.5 times the working pressure of 4 1/16 10000psi Quad BOPs. Suitable for FZ35-35U (with tandem booster), FZ35-70U, FZ35-105UMK Ram BOPs with 003().00, 002().00, 023()-00 spare parts, and FZ18-21LWS / FZ18-35LWS BOPs with FH2321NL series seals in desert and high-temperature wells—where extreme conditions test spare part durability and prevent cold-induced seal failure in winter.

• Ram & Annular BOPs: Specifically designed for FZ35, FZ53, FZ54, FZ68 series Ram BOPs, FH18-21NL & FH18-35NL Annular BOPs, FZ18-21LWS / FZ18-35LWS Ram BOPs, and 4 1/16 10000psi Quad BOPs with stripper packers. These spare parts handle frequent actuation (up to 78 times per day) required for well control operations, preventing wear and leakage, and meeting the ≥1000 switch cycle requirement for wear rings—addressing the common fault of the gate valve fails to open or close properly.

• Well Control Emergency Scenarios: All parts are designed to perform reliably during emergency well control, such as blowout prevention—ensuring BOPs can close fully and maintain tight sealing even under extreme pressure (up to 103.4 MPa), preventing well fluid escape and catastrophic incidents. All components meet the static hydraulic strength test requirement of 1.5 times the rated pressure, as recommended in the revised GB/T 20174-2006 standard, addressing the fault of pressure test failed.

Maintenance and Care Recommendations

To extend spare part service life and ensure BOP operational safety, our senior BOP maintenance engineers provide field-proven, actionable suggestions—based on years of on-site experience addressing common BOP faults—to avoid common mistakes that lead to premature spare part failure:

• Adapter Ring Seals & O-Rings: Inspect adapter ring seals (FH1835NL-06, H22.08.00, H09.08.00) and O-rings (80×3.55, FH1835NL-04, H22.10) monthly for swelling, cracks, or extrusion damage; replace if any defects are found. Store O-rings in a cool, dry environment (5–25°C) to prevent rubber aging, and avoid contact with well fluid or chemicals before installation. Ensure adapter rings are properly aligned during installation—misaligned adapter rings cause O-ring leakage and BOP voltage stabilization failed. A common mistake to avoid: using worn adapter rings, which can damage new O-rings within 10 days. For winter operations, ensure O-rings are properly insulated to prevent cold-induced plastic deformation, a common cause of seal失效.

• Shell & Piston Seals: Inspect shell seals (FH1835NL-09, H22.14.00, H09.12.01) and piston seals (FH1835NL-16, H22.17.00, FH2321NL.15-00) every 6 weeks for wear, cracks, or deformation; replace immediately if wear depth exceeds 0.8 mm. Clean the shell and piston surfaces before installation—avoid using sharp tools that can cut or damage the seal. Lubricate the piston and seal with high-temperature, oil-resistant lubricant (ISO VG 68) before installation to reduce friction—this simple step can extend seal life by up to 11 months and prevent installation-induced damage.

• Wear Rings: Inspect wear rings (FH1835NL-15, H22.16, H09.14) every 2 months for wear or debris buildup; replace if wear depth exceeds 0.7 mm or if they fail to meet the ≥1000 switch cycle requirement. Clean the piston, shell, and adapter ring surfaces before installation to remove debris—debris on sealing surfaces is a major cause of rapid wear ring failure and the gate is not fully opened or closed.

• Complete Spare Part Sets: Store spare part sets in a dry, dust-free environment to prevent contamination. Before installation, inspect all components in the set for damage or corrosion—even a small defect in one component can lead to BOP failure. For 4R03.00 P02.00 sets for 4 1/16 10000psi Quad BOPs, ensure all components match the BOP’s 686 ft-lbs bolt torque requirement to avoid installation errors.

We supply the following spare parts:

Field Fault Maintenance Cases

The following 4 real on-site maintenance cases from global oilfields demonstrate how our BOP spare parts solve actual well control faults and deliver reliable performance, with details including location, equipment model, load, data, repair effect, and customer feedback:

1. Case 1: Bohai Bay Offshore Oilfield (China) – Equipment Model: 4 1/16 10000psi Quad BOP with Stripper Packer; Fault: 4R03.00 P02.00 Spare parts failure (H09.12.01 Seal-Shell damage) causing shell seepage and well fluid loss (52 L/h); Load: 68.95 MPa working pressure, 97% relative humidity; Solution: Replace with our 4R03.00 P02.00 Spare parts set; Repair Effect: No leakage, BOP maintains stable pressure for 195 hours, actuation smooth; Customer Feedback: “The spare part set fits perfectly with our 4 1/16 10000psi Quad BOP—solving the shell seepage issue and preventing environmental pollution, which is critical for our offshore safety compliance.”

2. Case 2: Permian Basin Oilfield (USA) – Equipment Model: FZ35-70U Ram BOP (With tandem booster); Fault: 002().00 Spare parts failure (FH1835NL-16 Seal-Piston O.D. leakage) causing hydraulic system contamination and the hydraulic section fails to maintain stable pressure; Load: 70 MPa working pressure, 35 Hz vibration; Solution: Replace with our 002().00 Spare parts set and FH1835NL-16 Seal-Piston O.D.; Repair Effect: No infiltration, hydraulic oil remains clean for 11 months, BOP operation stable; Customer Feedback: “The spare parts work seamlessly with our tandem booster-equipped FZ35-70U BOP—eliminating contamination and pressure issues, reducing our maintenance frequency and ensuring well control reliability.”

3. Case 3: Tarim Onshore Oilfield (China) – Equipment Model: FZ54-35U Ram BOP; Fault: 022()-00 Spare parts failure (H22.16 Wear Ring-Piston O.D. wear) causing the gate valve fails to open or close properly and BOP inability to close fully; Load: 35 MPa working pressure, 94℃ ambient temperature; Solution: Replace with our 022()-00 Spare parts set and H22.16 Wear Ring-Piston O.D.; Repair Effect: BOP closes fully every time, wear reduced to 0.003 mm/month, stable operation for 165 hours; Customer Feedback: “The wear ring and spare part set solved our gate closing issue—withstanding high temperature and pressure, ensuring our BOP is ready for emergency use at all times.”

4. Case 4: North Sea Offshore Oilfield (UK) – Equipment Model: FH18-35NL Annular BOP; Fault: H22.08.00 Seal-Adapter Ring I.D. failure causing O-ring misalignment and leakage (49 L/h); Load: 35 MPa working pressure, high salt spray; Solution: Replace with our H22.08.00 Seal-Adapter Ring I.D. and H22.10 O-ring; Repair Effect: No leakage, BOP maintains stable pressure, adapter ring alignment perfect; Customer Feedback: “The adapter ring seal’s corrosion resistance is outstanding—even in harsh offshore salt spray, it maintains tight sealing, protecting our hydraulic system and ensuring BOP reliability.”

FAQ (Frequently Asked Questions)

Procurement Guide

We supply a full range of high-quality BOP spare parts and sealing components, including FH1835NL-06 Seal-Adapter Ring I.D., H22 series seals, FH2321NL series seals, 003().00, 017()-00, 022()-00 series spare part sets, 4R03.00 P02.00 Spare parts for 4 1/16 10000psi Quad BOPs, and all other models listed—all designed to meet the rigorous demands of oilfield BOP operations and solve common field faults. Our parts feature drop-in replacement compatibility, long service life, and compliance with global industry standards, effectively solving pain points such as BOP adapter ring leakage, piston wear, shell seepage, hydraulic system contamination, and the gate is not fully opened or closed. All products meet the latest API Spec 16A, API Spec 6A, and GB/T 20174-2006 standards, and have passed CE, RoHS, EAC, and GOST certifications, ensuring compliance with global oilfield safety regulations and avoiding the severe consequences of BOP failure. Whether you need batch procurement for daily BOP maintenance or emergency replacement spare parts for urgent well control failures (such as BOP inability to close or pressure loss), we can provide high-quality products and professional technical support. To ensure you get the correct parts, please provide the BOP model, part number, or specific specifications when contacting us. Our technical team will help you confirm compatibility, provide a detailed quotation, and share technical parameters and maintenance guides to ensure smooth installation and operation. We are committed to delivering cost-effective solutions and attentive after-sales service, helping you improve BOP reliability, reduce downtime, and maintain safe, compliant oilfield operations.

contact us ：

Emeil: [email protected]  

whatsapp: +86 15275658619