Supply Liner Gaskets for NOV 14-P-220 Triplex Mud Pumps

1

DHNO 07923265

Supply Liner Gasket for NOV 14-P-220 Triplex Mud Pump

Nitrile Butadiene Rubber (NBR) with reinforced fiber core, resistant to oil, water-based drilling fluids, and moderate chemicals

1. Compression set from over-torquing during installation; 2. Chemical degradation from aggressive mud additives; 3. Abrasive debris embedding and tearing.

1. Torque liner retaining components per NOV specs (Document 14P220-MAINT-001); 2. Filter drilling mud to remove large debris; 3. Replace if gasket shows permanent compression (no rebound).

2

DHNO 07923263

Supply Liner Gasket for NOV 14-P-220 Triplex Mud Pump

Nitrile Butadiene Rubber (NBR) with reinforced fiber core, resistant to oil, water-based drilling fluids, and moderate chemicals

1. Thermal fatigue from extreme temperature fluctuations; 2. Fluid leakage-induced swelling; 3. Misalignment causing uneven pressure distribution.

1. Avoid rapid temperature swings in drilling fluid; 2. Inspect liner alignment before gasket installation; 3. Replace if gasket swells beyond 5% of original dimensions.

3

DHNO 07923261

Supply Liner Gasket for NOV 14-P-220 Triplex Mud Pump

Nitrile Butadiene Rubber (NBR) with reinforced fiber core, resistant to oil, water-based drilling fluids, and moderate chemicals

1. Abrasive mud particle erosion; 2. Overpressure spikes beyond 7500 Psi; 3. Age-related material degradation.

1. Install pressure relief valves to prevent overpressure; 2. Use API-compliant mud with controlled solids content; 3. Replace gaskets every 6 months (or with liner replacement).

4

DHNO 07923284

Supply Liner Gasket for NOV 14-P-220 Triplex Mud Pump

Fluorocarbon Rubber (Viton) with metal core, resistant to high temperatures, chemicals, and aggressive drilling fluids

1. Chemical attack from high-pH or solvent-based mud additives; 2. Thermal degradation from prolonged high-temperature operation; 3. Metal core corrosion.

1. Verify fluid additive compatibility with Viton; 2. Monitor fluid temperature (max 200°F for Viton); 3. Inspect metal core for rust before installation.

5

DHNO 07923285

Supply Liner Gasket for NOV 14-P-220 Triplex Mud Pump

Fluorocarbon Rubber (Viton) with metal core, resistant to high temperatures, chemicals, and aggressive drilling fluids

1. Compression set from improper torque; 2. Abrasive debris scratching the rubber surface; 3. Bond failure between rubber and metal core.

1. Use calibrated torque wrenches for installation; 2. Clean liner sealing surfaces thoroughly; 3. Replace if rubber separates from the metal core.

6

DHNO 1540155

Supply Liner Gasket for NOV 14-P-220 Triplex Mud Pump

Ethylene Propylene Diene Monomer (EPDM) rubber, resistant to water, steam, and mild chemicals, ideal for freshwater drilling

1. Degradation from oil contamination in freshwater mud; 2. UV exposure (if stored improperly); 3. Compression fatigue from cyclic pressure.

1. Prevent oil contamination in freshwater drilling systems; 2. Store gaskets in dark, dry containers; 3. Inspect for cracks before installation.

7

DHNO 1540157

Supply Liner Gasket for NOV 14-P-220 Triplex Mud Pump

Ethylene Propylene Diene Monomer (EPDM) rubber, resistant to water, steam, and mild chemicals, ideal for freshwater drilling

1. Swelling from excessive water absorption; 2. Abrasive debris tearing; 3. Misalignment causing edge damage.

1. Maintain proper mud water content; 2. Install suction strainers to filter debris; 3. Ensure liner sealing surfaces are flat and clean.

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How do I choose between NBR, Viton, and EPDM supply liner gaskets for NOV 14-P-220 pumps?

NBR (e.g., DHNO 07923265) suits water/oil-based mud; Viton (e.g., DHNO 07923284) for aggressive chemicals/high temps; EPDM (e.g., DHNO 1540155) for freshwater drilling. Match to your mud type and operating temperature to avoid premature failure.

2

When should I replace supply liner gaskets for NOV 14-P-220 pumps?

Replace gaskets every 6–8 months, or whenever liners are replaced. Replace immediately if you notice leakage, swelling, compression set, or tearing. For harsh conditions (aggressive mud/high temps), shorten intervals to 4–6 months.

3

Can these gaskets withstand the 7500 Psi operating pressure of NOV 14-P-220 pumps?

Yes, all gaskets are rated for 7500 Psi service, complying with API Spec 7K and NOV’s original design specifications (ODS). Proper installation (correct torque, clean/aligned surfaces) ensures they maintain sealing integrity under rated pressure.