FLANGE INSULATION KITS
Arrests and Prevents Dielectric Contact and Galvanic Corrosion
Flange Isolation Gasket Kits are available for all size flanges, ranging from 1/2ʺ to 144ʺ in all ANSI and API classes. Constructed of quality materials that have a high dielectric constant and low water absorption.
Flange Protectors seal the flange internals to prevent foreign objects or debris from lodging between the flanges, forming a bridge, creating a short, and compromising the entire cathodic protection system.
The Stocking Standard NITRILE
Nitrile Faced Phenolic Gaskets have been used in the oil and gas industries for many years. Nitrile is factory applied to both sides of a laminated phenolic sheet providing an effective sealing surface. The temperature limit of these gaskets is 175° F (80° C.).
1" to 12" 150# IN STOCK - FAST DELIVERY!
Type E Gasket Kit
Our Type E “Full Face” Gasket style kit contains a full-face gasket that has the same outside diameter as the flanges. This style of gasket will prevent foreign material from collecting and creating a bridge in the flange which would short out the cathodic isolation.
Type E gaskets are available in nitrile, phenolic, neoprene-faced phenolic, and high temperature materials.
Type E Gasket
This style kit contains a full-face gasket that has the same outside diameter as the flanges. This style gasket will prevent foreign material from collecting and creating a bridge, thus shorting the cathodic isolation. Type E gaskets are available in phenolic, nitrile-faced phenolic, and high temperature materials.
Flange Isolation Kits are available for all flange sizes, types, pressure ratings and materials.
Each kit is packaged in a reinforced corrugated card-board box, which is labeled by its contents for convenience in warehousing and field use.
Each gasket is labeled with:
· Materials (Retainer Material or Retainer/Seal Element Combination)
· Pipe Size
· ANSI Class
· Date of Manufacture
Sleeves and washers are enclosed in a polyethylene bag to reduce loss. A chart showing recommended sequence for tightening flange bolts is included with each kit.
One-Piece Sleeves and Washers
Isolating sleeves are available in the following materials:
· Mylar
· Polyethylene
· Phenolic
· Nomex
· G-7 Silicon Glass
· G-10 Epoxy Glass
Designed to easily fit over standard sized & flange bolt/studs within standard size & bolt holes, isolating sleeves have a wall thickness of 1/32”. They are used with separate isolating and steel washers. They are available for standard American bolt sizes from 1/2” to 3-1/2” as well as metric bolt sizes from 12mm and larger.
Isolating Washers – Standard 1/8” Thick Isolating washers are available in the following materials:
· Phenolic (Included in stock kits, ready to ship)
· G-3 High Temp. Phenolic
· G-7 Silicon Glass
· G-10 Epoxy Glass
Designed to provide tough, positive isolation. Isolating washers are available for bolt sizes from 1/2” to 3 1/2” and are made to fit over the isolating sleeves. Molded from Minlon, and available for bolt diameters from 1/2” to 1-1/2”, one-piece sleeves and washers are structurally tough but limited to applications where the flange temperature does not exceed +180°F, and compressive loads do not exceed 18,000 psi. They are typically used as single washer sets because they’re
molded to specific lengths and, in many instances, are longer than the thickness of a single flange.
Steel washers are designed to fit over the isolating sleeve. The outside diameter is sized to fit within the bolt facing on ANSI standard flanges. Standard with Zinc Plated are also available in 316 stainless and Teflon Coated.
Have questions? What to place and order? Or want to enquire about a different kit? Please contact us.