Isolation Gasket Kits:
Your Defense Against Flange Corrosion
Provides effective cathodic protection, and prevents galvanic corrosion between flanges
Flange Isolation Gasket Kits serve a crucial role in safeguarding pipeline flanges against galvanic corrosion. They prevent the damage of flanged joints that induced by static currents in a piping system. The kits consist of a customized gasket, with isolation sleeves for nuts, stud bolts, and washers. It eliminates metal-to-metal contact, stops static current, and prevents decay while supporting Cathodic Protection.
Custom Gaskets offers a diverse range of Isolation Kits to cater to various requirements. We offer isolation kits in all sizes, spanning DIN, ASME, and API classes, and we are capable of accommodating custom and special sizes upon request.
Each kit comes equipped with:
- Isolating gasket
- Isolation sleeves
- Isolation washers per bolt hole
- Backing washers per bolt hole
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Custom Gaskets is committed to providing high-quality Flange Isolation Kits that offer effective solutions to the challenges posed by flanges. Our kits are designed to be easy to use, reliable, and durable, ensuring that your piping systems are protected against unwanted corrosion and breakdown.
Flange Isolation Gasket Kit
Isolation Kits are provided with a sealing element integrated into the gasket to ensure effective sealing integrity between the flanges. Our G10 isolation kit comes with a gasket with Viton seal, either G-10 or Mylar Sleeves, and double G-10 isolation washers & ZPS (Zinc Plated Steel) backing washers.
- Suitable for temperature up to 350°F (176°C)
- Suitable for pressures up to API5K (1/4” Thick)
Available options:
| Pipe Size: | 1/2″, 3/4″, 1″, 1-1/4″, 1-1/2″, 3″, 4″, 5″, 6″, 7″, 8″ |
| Pressure: | 150psi, 300psi, 600psi, 900psi, 1500psi, 2500psi, |
| Flange Type: | E, F |
| Gasket: | G10 |
| Seal: | PTFE – Teflon, Viton |
| Isolation Washer: | G10 |
| Backing Washer: | ZPS |
| Sleeves: | G10, Mylar |
N-Phenolic Isolating Gasket Kit is specifically manufactured for application with piping flanges, with the aim of offering protection against cathodic and galvanic corrosion of the flanges. Each kit comprises a Neoprene Phenolic Isolating Gasket, either one Mylar Isolation sleeve/bolt hole or two Integral Minlon Sleeves/bolt hole, as well as two ZPS backing washers/bolt hole. For Mylar sleeves, two phenolic isolating washers/bolt holes will also be included as standard.
- Suitable for temperature up to 220°F (104°C)
- Suitable for pressures up to 2500 ANSI
Available options:
| Pipe Size: | 1/2″, 3/4″, 1″, 1-1/4″, 1-1/2″, 3″, 4″, 5″, 6″, 7″, 8″ |
| Pressure: | 150psi, 300psi, 600psi, 900psi, 1500psi, 2500psi, |
| Standards: | ANSI B16.5, AWWA C207, ASME B16.47, & API 6A |
| Flange Type: | E, F |
| Gasket: | Plain Phenolic, 100% PTFE |
| Seal: | PTFE – Teflon, Viton |
| Isolating Washers: | Phenolic, Minlon(One piece sleeve and washer), PTFE |
| Backing Washer: | 304SS & 316SS |
| Sleeves: | Phenolic, G11, & Nomex |
NSF-approved gasket seals are designed to provide reliable and secure static sealing with minimal leakage. These seals meet the standards set by the National Sanitation Foundation (NSF) for use with potable water systems.
The elastomer sealing element is encapsulated within an electrically isolating retainer, which serves to protect the seal from exposure to electrical currents and other external elements that can cause corrosion or degradation. It also restricts the exposure of the seal to potable water flow to a minimum, allowing for only micro-exposure. This helps to prevent any contamination of the potable water system and ensures that the water remains safe and clean for consumption.
- Suitable for temperature up to 302°F (150°C)
- Can be used for mismatched and/or misaligned flanges
- Compensates for temperature, pressure, fluctuations, vibrations, compression changes
- NSF-61 approved seals available in EPDM or PTFE
Available Sealing Element Materials:
| Seal: | NSF-61 Approved Seals available in EPDM or PTFE |
| Pipe Size: | Up to 144″ flanges sizes |
| Compression Strength: | up to 66,000psi |
| Flange Type: | E, F |
| Gasket: | G10 NEMA Grade |
| Dielectric Values VPM: | 800 |
| Isolation Washer: | NEMA grades G-7 and G10 |
| Sleeves: | Nomex, NEMA grades G-7 and G10 |
