Product Introduction
This comprehensive collection features genuine-equivalent NOV spare parts for critical drilling equipment subsystems, including mechanical transmission components, hydraulic system parts, sealing assemblies, valve components, bearing modules, and specialized repair kits. Covering high-wear items (seals, gaskets, piston rings) and structural core parts (shafts, cylinders, bushings), each part is engineered to fit NOV, VARCO, Drillmec, and Mission 2500 Supreme drilling equipment without modification, ensuring perfect form, fit, and function matching OEM originals.
Functional Description
- Mechanical Power Transmission: Shafts, keys, wheels, and drive components deliver stable torque transfer for top drive and mud pump operation, supporting heavy-load drilling and reciprocating motion
- Hydraulic System Control & Pressure Regulation: Cylinders, valves (2-way, check, hydraulic control valves), pressure sensors, and manifolds manage hydraulic fluid flow and pressure, enabling precise rig actuation and mud circulation control
- Leakage Prevention &> Sealing: Oil packings, seal sets, O-rings, and gaskets create reliable sealing for hydraulic circuits, mud pumps, and fluid chambers, preventing fluid loss and contamination under 2500PSI+ operating pressure
- Wear Resistance & Load Bearing: Bushings, bearings, and sliding rollers reduce friction between moving parts, extending equipment service life and handling continuous heavy-duty drilling loads
- Equipment Protection & Monitoring: Pressure switches, filters, and protectors safeguard hydraulic and mechanical systems from contamination, overpressure damage, and premature wear
Structural Features
- Precision Machining: Metal components (shafts, screws, pins) feature micron-level dimensional accuracy, ensuring tight fits and stable assembly with OEM equipment housings
- High-Strength Materials: Seals use wear-resistant nitrile rubber and polyurethane; structural parts adopt alloy steel with heat treatment, resisting corrosion, abrasion, and fatigue in extreme oilfield conditions
- Modular Design: Repair kits, seal sets, and bearing modules are pre-assembled for quick installation, cutting on-site repair time by up to 60% compared to custom-fabricated parts
- Standardized Mounting: All parts follow API and industry-standard mounting interfaces, compatible with existing TDS-8SA, ST-80, and 2500 Supreme equipment brackets and housings
Applicable Operating Conditions
These spare parts are certified for use in the harshest drilling environments, with optimal performance under the following conditions:
- Operating pressure: Up to 2500 PSI (mud pump and hydraulic system rating)
- Temperature range: -40°F to 220°F (-40°C to 104°C) for extreme climate drilling sites
- Application scenarios: Onshore land rigs, offshore platform rigs, desert drilling, and arctic exploration operations
- Equipment types: NOV TDS-8SA top drives, VARCO ST-80 drilling assemblies, 2500 Supreme mud pumps, Drillmec hydraulic cylinders, and National Oilwell mud circulation systems
2.5 Preventive Maintenance Recommendations
- Scheduled Inspection Intervals: Inspect high-wear seals, gaskets, and valve discs every 500 operating hours; check shaft alignment, bearing clearance, and hydraulic cylinder integrity every 1500 hours
- Replacement Cycles: Replace oil packings, piston seals, and filter elements every 3000 hours; swap bearings, bushings, and key components every 8000 hours or at the first sign of wear
- Environmental Protection: Lubricate moving parts (shafts, rollers, bearings) with high-grade drilling grease to resist dust and mud contamination; store spare seals in cool, dry conditions to prevent material degradation
- Troubleshooting Protocols: For hydraulic leaks, inspect seal sets and O-rings first; for mechanical vibration, check keyway fits and bearing condition; for pressure fluctuations, test valve discs and pressure sensors
- Inventory Management: Stock critical fast-moving parts (seals, screws, gaskets, valve components) on-site to reduce emergency repair lead times and avoid rig shutdowns
We supply the following spare parts:
| No. | Name, characteristics of goods required for delivery |
| 1 | SHAFT NOV 30160604 |
| 2 | SCREW NOV 50708-12-OC |
| 3 | SCREW NOV 55109-08-C |
| 4 | KEY 12X8X35MM NOV 30160607 |
| 5 | KEY 12X8X50MM NOV 30160608 |
| 6 | KEY 16X10X70MM NOV 30160617 |
| 7 | KEY NOV 30160387 |
| 8 | KEY NOV 30160390 |
| 9 | WHEEL NOV 30160619 |
| 10 | WHEEL NOV 30160620 |
| 11 | WHEEL NOV 30160621 |
| 12 | WHEEL NOV 30160622 |
| 13 | WHEEL NOV 30160623 |
| 14 | RING NOV 30160603 |
| 15 | OIL PACKING 8264-24-OV 2500 SUPREME |
| 16 | HINGE PIN VARCO 30160612 |
| 17 | SWITCH NOV 30151888-D |
| 18 | DRIVE NOV 30172180 |
| 19 | BODY GASKET 10399-46-1 2500 SUPREME |
| 20 | CLUTCH SPACER NOV 1312304 |
| 21 | SEAL H20622-4A MISSION 2500 SUPREME |
| 22 | SEAL 23444-01-72 2500 SUPREME |
| 23 | SEAL H19110-72 MISSION 2500SUPREME |
| 24 | CYLINDER NOV 30160444 |
| 25 | CYLINDER NOV 30160684 |
| 26 | CYLINDER NOV 30160685 |
| 27 | STOCK NOV 30173756 |
| 28 | CYLINDER DRILLMEC NOV20369546 |
| 29 | BUSHING NOV 30160605 |
| 30 | BUSHING NOV 717383 |
| 31 | BUSHING NOV 717392 |
| 32 | BUSHING NOV TDS-8SA 118844-22-12 |
| 33 | SHAFT BUSHING Н20613-21А 2500 SUPREME |
| 34 | SHAFT BUSHING Н20613-21А 2500 SUPREME |
| 35 | SHAFT BUSHING Н20613-21А 2500 SUPREME |
| 36 | SHAFT BUSHING Н20613-21А 2500 SUPREME |
| 37 | CYLINDER BUSHING 6 1/4 NOV 05-466-625 |
| 38 | NUT NOV 005-402-052 |
| 39 | NUT NOV 718917 |
| 40 | HYDRAULIC SUCTION BOX NOV 1292362 |
| 41 | DISCHARGE HYDRAULIC BOX NOV 1292361 |
| 42 | PISTON HEAD NOV 32500-02/M2 |
| 43 | PRESSURE SENSOR NOV 4520253 |
| 44 | DIAPHRAGM NATIONAL OILWELL 1290195 |
| 45 | VALVE DISC NOV 1560557 |
| 46 | 2-WAY VALVE 9/16″ NOV 1120304 |
| 47 | 2-WAY VALVE 9/16″ NOV 1120310 |
| 48 | VALVE 3″ANSI 150# NOV 20022756 |
| 49 | DRILLMEC VALVE 2″ NOV20368291 |
| 50 | VALVE NOV 107029-375N |
| 51 | VALVE NOV 30171622-500 |
| 52 | VALVE NOV 93547-2B75N |
| 53 | VALVE NOV 94518-23HN |
| 54 | VALVE NOV 94536-175N |
| 55 | HYDRAULIC SYSTEM VALVE T4688 NOV 10400 |
| 56 | HYDRAULIC SYSTEM VALVE T4688 NOV 16016 |
| 57 | CHECK VALVE 9/16″ NOV 1503602 |
| 58 | RING DRILLMEC LARGE BORE NOV20374247 |
| 59 | RING DRILLMEC STANDART BORENOV20356175 |
| 60 | RING NOV 030583 |
| 61 | RING NOV 030599 |
| 62 | RING NOV 030611 |
| 63 | RING NOV 030614 |
| 64 | RING NOV 030632 |
| 65 | RING NOV 040985 |
| 66 | RING NOV 040999 |
| 67 | RING NOV 30160397 |
| 68 | RING NOV 51300-112-B |
| 69 | RING NOV 717292 |
| 70 | RING NOV 717315 |
| 71 | RING NOV 717316 |
| 72 | RING NOV 717317 |
| 73 | RING NOV 717390 |
| 74 | RING NOV 718226 |
| 75 | ADJUSTMENT RING DRILLMEC NOV20356412 |
| 76 | SEALING RING NOV 20014727 |
| 77 | SEAL KIT NOV 94764-SK |
| 78 | CASE NOV 1292351 1292900-011 P 11 |
| 79 | CASE NOV 717082 |
| 80 | CASE NOV 717082 |
| 81 | COVER NOV 1292352 1292900-011 P 8 |
| 82 | COVER NOV 34020 |
| 83 | COVER NOV 717083 |
| 84 | COVER NOV 717290 |
| 85 | COVER NOV 718794 |
| 86 | COVER NOV 718920 |
| 87 | TAPE NOV 152344 (10450493-001) |
| 88 | CUFF 30160666-4 KEYS VARCO ST-80 |
| 89 | THE CUFF SEALS. DRILLMEC NOV20356413 |
| 90 | MANIFOLD NOV 109270-GA1 |
| 91 | MANIFOLD NOV 30154910-1 |
| 92 | MANIFOLD NOV 30170647-2 |
| 93 | MANIFOLD NOV 30172354-502 |
| 94 | OIL PACKING NOV 717078 |
| 95 | OIL PACKING NOV 717078 |
| 96 | SEAL SET 63/40 NOV 34095 |
| 97 | SEAL SET 80/50 NOV 24305 |
| 98 | SEAL SET T4688 NOV 19483 |
| 99 | SEAL SET T4688 NOV 46262 |
| 100 | ADAPTER NOV 717079 |
| 101 | BEARING NOV 062238 |
| 102 | BEARING NOV 30160733 |
| 103 | BEARING NOV 30160734 |
| 104 | MODULAR BEARING NOV 062228 |
| 105 | MODULAR BEARING NOV 062228 |
| 106 | PISTON NOV 718916 |
| 107 | PRESS NOV 060876 |
| 108 | OIL PRESS NOV 060882 |
| 109 | WIRE NOV Z6001 D=0.051″ |
| 110 | GASKET NATIONAL OILWELL 1290199 |
| 111 | GASKET NOV 050382 |
| 112 | GASKET NOV No. 1275158 |
| 113 | GASKET NOV No. 1292064 |
| 114 | GASKET NOV No. 1292095 |
| 115 | GASKET NOV No. 1292097 |
| 116 | UPPER GASKET NOV No. 1292076 |
| 117 | LINER GASKET NOV 6 1/4″ 1540150 |
| 118 | COVER GASKET NOV No. 1292096 |
| 119 | NOV PLATE GASKET No. 1283191 |
| 120 | NOV PLATE GASKET No. 1292079 |
| 121 | LINGER GASKET 0.002″ NOV 627610 |
| 122 | LINGER GASKET 0.003″ NOV 627610-1 |
| 123 | LINGER GASKET 0.036″ NOV 648078-1 |
| 124 | LINGER GASKET 0.048″ NOV 648078 |
| 125 | PROTECTOR NOV 064055 (10486965-001) |
| 126 | VALVE SPRING NATIONAL OILWELL 1560701 |
| 127 | PRESSURE SWITCH NOV 20008755 |
| 128 | DRIVE BELT DRILLMEC NOV20368651 |
| 129 | REPAIR KIT 30177468-1 |
| 130 | REPAIR KIT 30177468-2 |
| 131 | REPAIR KIT NOV 719367 |
| 132 | REPAIR KIT NOV TDS-8SA 30174223-RK |
| 133 | SLIDING ROLLER VARCO 30173757 |
| 134 | SADDLE NOV 719448 |
| 135 | SADDLE NOV 719448 |
| 136 | SADDLE ASSEMBLY NOV 719366 |
| 137 | VALVE SEAT VARCO 1561450 |
| 138 | DIAPHRAGM STABILIZER 1005213 |
| 139 | PIPE 4″ VARCO 30123438 |
| 140 | PUMP ASSEMBLY WITH DRIVE NOV 20027047 |
| 141 | WASHING UNIT 4″ ASSEMBLY NOV 30123440 |
| 142 | PISTON RING SEAL DRILLMEC NOV20355884 |
| 143 | SEAL 3-1/2″ -7-5/8″ NOV20359481 |
| 144 | SEAL DRILLMEC 4-1/2″ NOV20377155 |
| 145 | SEAL DRILLMEC NOV20351512 |
| 146 | SEAL DRILLMEC NOV20355642 |
| 147 | SEAL DRILLMEC NOV20355882 |
| 148 | SEAL DRILLMEC NOV20355887 |
| 149 | SEAL DRILLMEC NOV20356171 |
| 150 | SEAL DRILLMEC NOV20356172 |
| 151 | SEAL DRILLMEC NOV20367700 |
| 152 | SEAL DRILLMEC NOV20374248 |
| 153 | SEAL DRILLMEC NOV20374340 |
| 154 | SEAL DRILLMEC NOV20374341 |
| 155 | SEAL DRILLMEC NOV20376375 |
| 156 | SEAL DRILLMEC2-7/8″-5″ NOV20394383 |
| 157 | SEAL NOV 060603 |
| 158 | SEAL NOV 062232 |
| 159 | SEAL POLYPAK NOV 062218 |
| 160 | SEAL POLYPAK NOV 062220 |
| 161 | VALVE SEAL NOV No. 1540126 |
| 162 | RING SEAL. DRILLMEC NOV20355883 |
| 163 | COVER SEAL DRILLMEC NOV20364461 |
| 164 | LIP SEAL VARCO 88096 |
| 165 | SEAL H22451-1A MISSION 2500SUPREME |
| 166 | SEAL H22451-1A MISSION 2500SUPREME |
| 167 | SEAL H22451-1A MISSION 2500SUPREME |
| 168 | SEAL H22451-1A MISSION 2500SUPREME |
| 169 | PLASTIC SEAL DRILLMEC NOV20351679 |
| 170 | PISTON SEAL 6 1/4″ NOV 015180284 |
| 171 | CONNECTING ROD SEAL DRILLMEC NOV20356169 |
| 172 | FILTER NOV 142294 T4688-D1160-H0001 PH02 |
| 173 | FILTER NOV 82747-R |
| 174 | DISCHARGE FILTER NOV 1292219 |
| 175 | WINCH FILTER FA5A NOV F35-0B-C28 |
| 176 | FLANGE NOV 702640-23-71-HSO- |
| 177 | ROD CLAMP ASSEMBLY 1292085 |
| 178 | CYLINDER NOV 718915 |
| 179 | GATE NOV 717904 |
| 180 | HYDRAULIC HOSE NOV 203276-1 |
| 181 | HYDRAULIC HOSE NOV 203276-2 |
| 182 | STUD NATIONAL OILWELL VARCO 30173958 |
| 183 | KEY NOV 062260 |
| 184 | PIN NOV 050071 |
| 185 | STOCK NOV 20015413 |
| 186 | STOCK NOV 20015416 |
| 187 | STOCK NOV 718918 |
| 188 | STOCK NOV 718919 |
| 189 | COVER BUSH RETSCO 13229-08 |
| 190 | PLUNGER BUSH RETSCO 13229-10 |
| 191 | VALVE RETSCO 34000-02 |
Field Fault Repair Cases
Case 1: TDS-8SA Top Drive Shaft Key Failure
An onshore drilling rig experienced torque loss in the TDS-8SA top drive, caused by a worn 12X8X35MM key (NOV 30160607). The damaged key led to misalignment between the shaft and drive assembly, halting drilling operations. Replacing the worn key with the OEM-spec spare and re-torquing the shaft assembly restored full power transmission, getting the rig back online in 3 hours.
Case 2: 2500 Supreme Mud Pump Oil Leakage
A 2500 Supreme mud pump developed severe hydraulic oil leakage due to a degraded oil packing (8264-24-OV). The leak caused low hydraulic pressure and inefficient mud circulation. Installing a new OEM-grade oil packing and tightening the flange connections eliminated the leak, restoring pump pressure to the 2500 PSI operating standard without further issues.
Case 3: Hydraulic Cylinder Seal Failure on Drillmec Assembly
A Drillmec hydraulic cylinder (NOV20369546) failed to extend properly due to a damaged piston seal. The faulty seal caused fluid bypass and inconsistent cylinder movement, disrupting rig positioning. Replacing the piston seal (NOV20355884) and performing a pressure test resolved the issue, ensuring smooth and stable hydraulic cylinder operation.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these parts compatible with NOV TDS-8SA top drives only? | No, these parts fit multiple models including NOV TDS-8SA, VARCO ST-80, Drillmec drilling assemblies, and 2500 Supreme mud pumps, with cross-compatibility verified against OEM part numbers and dimensions. |
| What material are the seal components made from? | Seals, oil packings, and O-rings use high-grade nitrile rubber and polyurethane, engineered to withstand high pressure, oil exposure, and abrasive mud conditions typical in drilling operations. |
| Can these parts be used for both routine maintenance and emergency repairs? | Absolutely. These OEM-equivalent parts are designed for scheduled preventive maintenance to avoid failures and for emergency on-site repairs to minimize costly rig downtime, with quick-install designs for fast replacement. |
Procurement Guidance & Closing Call to Action
For oilfield drilling operations focused on equipment reliability, operational continuity, and cost efficiency, these NOV drilling equipment spare parts are the definitive procurement solution. Backed by strict quality testing and compliance with global drilling industry standards, each component eliminates the risks of subpar aftermarket parts, reduces long-term maintenance expenses, and ensures consistent performance of your critical drilling machinery.
Use this catalog as your go-to reference for accurate part selection, whether stocking inventory for routine maintenance or sourcing components for urgent repairs. By choosing these precision-engineered spare parts, you secure durable, high-performance replacements that align with OEM specifications, protect your equipment investment, and keep your drilling operations running smoothly. Connect with our supply team to secure the exact parts your TDS-8SA, ST-80, or 2500 Supreme equipment needs, and maintain uninterrupted drilling productivity with reliable, industry-grade spare components.
