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3″ Figure 1002 Hammer Union Lip Seals for Water & Mud

Our Hammer Union Seals are engineered to provide leak-free performance in Weco® style union connections used in high-pressure flowlines. Manufactured from high-modulus elastomers and reinforced with anti-extrusion backup rings (Brass or Stainless Steel), these seals withstand the extreme pulsating pressures and abrasive fluids found in hydraulic fracturing and cementing operations.

Technical Specifications

  • Working Pressure Ratings: 1,000 PSI to 22,500 PSI (depending on union rating)
  • Durometer: 80-95 Shore A

Applications

  • Hydraulic Fracking: High-pressure sand and proppant injection lines.
  • Flowback Operations: Managing post-frac fluids and gases.
  • Choke & Kill Manifolds: Safety-critical well control connections.
  • Mud Lines: Circulating drilling mud systems.
  • Acidizing & Cementing: Handling abrasive cement slurries and acid fluids.

3″ Figure 1002 Hammer Union Lip Seals for Water & Mud

1. Executive Summary

Drilling mud systems operate at lower pressures than frac lines but handle significantly higher volumes of solids and abrasives. Our 3″ Figure 1002 Lip Seals are designed specifically for this Medium Pressure (10,000 PSI) environment.

Unlike the “compression fit” of a 1502 seal, the Lip Seal (or U-Cup) design relies on line pressure to energize the seal. The internal lips flare outward against the sealing surface as pressure increases. This design is superior for Mud Systems because it tolerates the vibration and slight misalignment common in rig piping better than static compression seals.

2. Design Advantage: The “Lip” Geometry

  • Self-Cleaning Action: As the pressure fluctuates, the flexing action of the lip helps dislodge particulate matter (sand/shale) that might otherwise become trapped and cause leaks.

  • Low-Pressure Activation: Standard O-rings require significant “squeeze” to seal. Lip seals activate with as little as 100 PSI, making them ideal for the variable pressures of mud pump suction and discharge cycles.

3. Detailed Technical Specs

Technical Property Specification
Size 3 Inch
Union Type Figure 1002 (Red Nut / Blue Sub)
Also Fits Figure 602 (6,000 PSI) & Figure 1003 (Misaligning)
Seal Profile Lip Seal / U-Cup (Pressure Energized)
Material Nitrile (NBR) Black
Hardness 80 Shore A (Optimized for Flex)
Pressure Rating 10,000 PSI (690 Bar)
Temp Rating -20°F to +225°F
Compatible Fluids Drilling Mud (WBM/OBM), Flowback Water
Construction Homogeneous Rubber (No Metal Ring)

4. Critical Applications

  • Mud Pumps: Discharge connections handling heavy drilling mud.

  • Choke & Kill Manifolds: Managing well control pressures.

  • Standpipe Manifolds: Vertical pipe runs on the rig floor where vibration is high.