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Liquid Hydrocarbon Pipeline

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Which pipeline seal is right for you?

At John Crane, we understand the importance of pipeline integrity. A seal failure not only means production losses up to millions of dollars per day, but could also lead to long-term environmental consequences. If you are unsure which sealing solution is the best fit for your pipeline, the questions below will help you.

What process fluids are you transporting?

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Type 8648VRS

Type 8648VRS Single Seal with hard faces

  • Unique patented secondary seal technology prevents wear to the sealing diameter and prevents secondary seal hang-up
  • Premium seal face materials permit sealing of difficult services at high operating pressures
  • LaserFace grooved mating ring for use on flashing hydrocarbons
  • Available as a single, dual pressurized or dual- unpressurized arrangement
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Type 8648VRS

Type 8648VRS Single Seal with carbon faces

  • Unique patented secondary seal technology prevents wear to the sealing diameter and prevents secondary seal hang-up
  • Premium seal face materials permit sealing of difficult services at high operating pressures
  • Carbon faces are utilized when handling lighter viscosity fluids
  • Available as a single, dual-pressurized or dual-unpressurized arrangement
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Type 8648VRS Dual Fig 1

Type 8648VRS Dual-pressurized Seal

  • Unique patented secondary seal technology prevents wear to the sealing diameter and prevents secondary seal hang-up
  • Hard faces are standard to handle higher viscosity fluids and high torque application, as well as abrasive wear resistance
  • Premium seal face materials permit sealing of difficult services at high operating pressures
  • Static reverse pressure capability on inboard seal
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Do you have a preferred seal arrangement?

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Type 8648VRS Dual Fig 1

Type 8648VRS Dual-pressurized Seal

  • Unique patented secondary seal technology prevents wear to the sealing diameter and prevents secondary seal hang-up
  • Hard faces are standard to handle higher viscosity fluids and high torque application, as well as abrasive wear resistance.
  • Premium seal face materials permit sealing of difficult services at high operating pressures
  • Static reverse pressure capability on inboard seal
Learn More
Type 8648VRS

Type 8648VRS Single Seal

  • Unique patented secondary seal technology prevents wear to the sealing diameter and prevents secondary seal hang-up
  • Premium seal face materials permit sealing of difficult services at high operating pressures
  • Hard faces are standard to handle higher viscosity fluids and high torque application, as well as abrasive wear resistance
  • Carbon faces are utilized when handling lighter viscosity fluids
  • LaserFace grooved mating ring for use on flashing hydrocarbons
66A Only 440 Crop

SCB Plan 66A Secondary Containment Device

  • Used as back-up to Type 8648VRS Single primary seal and incorporated into a cartridge
  • Standardized dual-bushing secondary containment device intended for use in conjunction with API Plan 66A
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Do you have a preferred secondary containment technique?

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66A Only 440 Crop

SCB API Plan 66A Secondary Containment Device

  • Used as back-up to Type 8648VRS Single Seal and incorporated into a cartridge
  • Standardized, dual-bushing secondary containment device intended for use in conjunction with API Plan 66A
Learn More
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What process fluids are you transporting?

Icon of stacked layers

Do you have a preferred seal arrangement?

Icon of two octagonal shapes nesting inside each other

Do you have a preferred secondary containment technique?

Pipeline Seal Solutions

Type 8648VRS

Type 8648VRS Single Seal

  • Unique patented secondary seal technology prevents wear to the sealing diameter and prevents secondary seal hang-up
  • For crude oil applications, hard (silicon carbide) faces are standard to handle higher viscosity fluids and high torque application and for abrasive wear resistance
  • Premium seal face materials permit sealing of difficult services at high operating pressures
  • Alternative materials are available for light and flashing hydrocarbons
Learn more
Type 8648VRS dual

Type 8648VRS Dual-pressurized Seal

  • Unique patented secondary seal technology prevents wear to the sealing diameter and prevents secondary seal hang-up
  • Static reverse pressure capability on the inboard seal
  • Premium seal face materials permit sealing of difficult services at high operating pressures
  • Hard faces are standard to handle higher viscosity fluids and high torque application, as well as abrasive wear resistance
Learn more
66A Only 440 Crop

SCB API Plan 66A Secondary Containment Device

  • Used as back-up to the Type 8648VRS Single Seal and incorporated into the cartridge
  • Standardized dual-bushing secondary containment device
  • Arrangement intended for use in conjunction with API Plan 66A
Learn more
Duplex fluid filter

Liquid Filtration Solutions

  • Filters can be applied to almost any liquid application
  • Filters in duplex configuration to ensure adequate, uninterrupted filtration of the process flow when changing the filter element
  • Patented elements remove particle contamination and maximize reliable operation of the machine
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PA 53B

Seal Support Systems

  • API Plan P53B: An accumulator-based seal support system that utilizes a bladder to maintain system pressure to a dual-pressurized seal
  • API Plan P54/P55—Provides a positive flow and pressure of barrier fluid to a dual-pressurized seal
  • API Plan 54/P55 is typically preferred where flow and heat removal capacity exceed that of API Plan 53B
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T series meta stream

T-Series Metastream Membrane Disc Couplings

  • Membrane (disc) couplings, incorporating stainless steel scalloped membranes, with metric or imperial flange hardware
  • Specially designed to meet API 610 (ISO 13709) and ISO 14691 standards
  • Center unit replacement is quick and easy to maximise your equipment running time
  • Fit-and-forget reliability
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Additional Content

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Case Studies

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A close up of a pipeline with a large industrial plant in the background

Brochures

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Videos

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Liquid Hydrocarbon Pipeline Products

Showing 1–2 of 2 Products

Type 8648VRS

Single and Dual Non-pusher Elastomer Seal

Type 8648VRS

Type 8648VRS is a standardized non-pusher elastomer mechanical seal using patented technology, designed specifically for difficult hydrocarbon oil pipeline applications. It is designed specifically with…

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Secondary Containment Bushing

Secondary Containment Device for Plan 66A Crude-oil Pipeline Applications

66A only 440

The SCB Secondary Containment Bushing is a standardized, dual-bushing arrangement intended for . . . 

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