Engineered Gasket for Xtreme Critical Sealing

Prevent future leaks and blowouts today

Sealing Gasket for Zero Fugitive Emissions & Extreme Critical Sealing Applications

The LineSeal™ gasket uses proprietary materials to address the regulations associated with fugitive emissions, requirements that are closely monitored and highly sensitive to regulatory agencies today.

LineSeal™ Sealing & Isolating Gaskets

Features
• Extreme, high-reliability sealing and electrical isolation solution for critical service applications.
• Seals and isolates all pressure ratings through ANSI 2500 class and API 15,000 psi service.
• Withstands severe service conditions including vibration, temperature and pressure fluctuations.
• Designed to withstand corrosive environments, including high concentrations of CO2, H2S, produced water and aggressive inhibitors.
• Good electrical isolation properties for cathodic protection.
• Pressure-activated seals provide high confidence sealing, eliminates costly leaks and provides a solution for fugitive emissions.
• Gasket is sized to the bore to protect flange faces from media-induced corrosion and flow-induced erosion.
• Prevents turbulent flow at flanged connections.
• Mitigates galvanic corrosion in dissimilar metal flanges.
• High-strength laminate material resists failure due to excess compression.
• Available to match any flange specification (ANSI, ASME, API, MSS, BS, DIN, AS, others).
• Can mate mismatched RTJ with raised-face flanges.
• Easy installation, make up and removal:
  • Sealing system is not sensitive to low bolt loads – providing reliable sealing through a range of bolt stress.
  • Gasket is self-aligning and centering – quick to install and no special tools are required.
• Maintenance-free corrosion-resistant design is resistant to deforming under load.
• Works in Ring Joint Flanges, reducing fluid entrapment, flow induced erosion and media induced corrosion between flanges.

Applications:
• H2S service.
• High pressure flanges.
• Critical service applications.
• High Ph service.
• Locations where one prefers an integral seal element.
• Sealing flanges without dissimilar metal contact that occurs with Chevron in spiral-wound type gaskets.

LineSeal™ Flange Isolation Kits

Typical Specification

All Critical Service Applications
Materials for sealing gaskets on pipes containing water, aqueous fluids, oil, sour or natural gas (up to 302ºF, 150ºC) shall consist of the following components:

Isolation and Sealing Gasket
One isolating and sealing gasket, LineSeal™ Type “F”, 0.27” thick, 316 stainless steel core retainer laminated on both sides with a G-10 fiber glass reinforced laminate containing a precision tapered groove to accommodate the controlled compression of a PTFE (Teflon) spring energized seal. Sealing element placement shall accommodate either flat, raised or RTJ face flanges. The spring energized seal shall be pressure energized. The G-10 retainer shall have a 800 volts/mil dielectric strength and a minimum 69,000 psi compressive strength. The I.D. of the flange isolating gasket shall match the bore of the flange in which it is installed.

Quality
Gaskets shall be manufactured at a facility that has a registered ISO 9001:200 Quality Management System. Submittals shall include copy of valid registration. Performance suitability and material compatibility shall be determined by the user.

LineBacker® gasket?
LineSeal™ gaskets are especially effective for sealing extremely critical flange applications such as high concentrations of H2S at high pressures where even trace amounts of leakage could prove fatal. The G-10 retainer material is not compromised by exposure to this hazardous fluid while the soft, one-piece sealing elements eliminate any chance of a leakage emanating from between the flange faces.

In what applications is the LineSeal™ gasket considered better than a PSI LineBacker® or GasketSeal® gasket?
Exposure to high temperatures, fluctuating temperatures and/or corrosive fluids is where the Line-Seal gasket proves especially effective at creating and maintaining a seal. The largest portion of the G-10 retainer is totally protected from any fluids by the seal elements which are positioned in close proximity to the barrel of the flange.

How do the dielectric characteristics of LineSeal™ gaskets compare to LineBacker® or GasketSeal® gaskets?
LineSeal™ gaskets are offered for extreme critical service applications where the need for superior sealing characteristics exceed its electrical isolation characteristics. Any gasket with a metal core is a compromise when compared to a gasket constructed completely from dielectric materials.

Is there an environment where a Viton Seal would be preferred over a Teflon® seal?
When fluctuating temperatures are encountered and pressure changes fluctuate across a broad range, the Teflon® seal may lose its pliability over time. Under these conditions, the LineSeal™ with a spring energized rubber Viton seal element should be considered.

Extreme Critical Sealing for Industries

Production Fields
In gathering and injection piping – tank farms – oil and gas processing systems – for sour gas and water handling systems. For Christmas trees – pumps – valves – and wherever it is important to guard against the loss of product.

Petroleum Marketing Facilities
In terminal and tank farm piping – marine and airport fueling systems – and other product handling facilities where it is essential to prevent loss of product or damage due to a flange leak or blowout.

LNG and SNG Systems
For loading, unloading, liquefaction, regasification and processing of LNG – the production and processing of SNG – and wherever it is essential to provide a leak-proof flange for use from cryogenic to very high temperatures.

Pipeline and Distribution Piping
In compressor and pumping station piping – metering and measurement facilities – valves and other control equipment – and elsewhere on a mainline piping system where a long-lasting, leak-proof flange is essential. In gas distribution piping – underground storage facilities – town border stations – industrial meter-regulator sets – and district regulators.

Refineries
In piping systems for heavy gasoline – caustic – acid based materials – carbon slurry – and wherever it is essential to protect plant and personnel from damage due to flange leaks or blowouts.