Buy PGE flange isolating gasket kits direct from Ningbo Kaxite Sealing Materials Co., Ltd., a China-based manufacturer and exporter. The PGE kit was designed as an alternative to failure-prone phenolic-based isolating gaskets. Its patented overlapping and offsetting seal grooves break every laminate layer, creating a barrier through which fluid and gas cannot migrate. The result is maintenance-free flange isolation and flange face corrosion mitigation achieved economically.
Available in ring (Type F) style or full-face (Type E) style. Suitable for raised-face and flat-face flanges in ANSI Class 150, 300 and 600 service. Provides electrical isolation for cathodic protection systems, dissimilar-metal flange isolation and flange face corrosion protection. Low required bolt loads, near-zero creep relaxation, and easy installation and removal.
A PGE kit is more than a gasket. It is a complete flange isolation system. Each kit is supplied with the following components matched to your flange size, pressure class and service medium.
NEMA G-10 or G-11 glass-reinforced epoxy laminate with patented overlapping and offsetting seal grooves that break every laminate layer. Standard thickness matched to ANSI Class 150, 300 and 600 service.
Any elastomeric material or spring-energized PTFE lip seals. The sealing element is selected for the hydrocarbon, water or chemical service and the required dielectric strength.
Mylar, Nomex, G7, G10 or G11. Each sleeve electrically isolates the bolt from the flange. Dielectric strength and operating temperature range are selected to match the service.
Phenolic, Mica, G7, G10 or G11. Each washer isolates the nut face from the flange face. Mica is available for the highest water resistance and dielectric strength combination.
Zinc-plated carbon steel as standard. SS 304 or SS 316 available on request. HCS with X37 coating available for special applications where additional hardness or corrosion resistance is required.
Non-standard dimensions, private-label packaging and OEM marking on request. Send the flange drawing or existing gasket sample and we will match it directly.
This page is written for procurement engineers, pipeline maintenance teams, cathodic protection engineers and EPC contractors who need a reliable PGE flange isolating gasket kit manufacturer. Whether you are comparing quotes, verifying dielectric strength data or scheduling a bulk delivery for a pipeline or heat exchanger project, the sections below cover the technical facts and commercial terms you need to place a firm order.
The PGE flange isolating gasket kit was designed to give operators an alternative to the failure-prone phenolic-based isolating gaskets. The unique design of the PGE flange isolating gasket kit incorporates patented overlapping and offsetting seal grooves. The purpose of this design is to break each layer of laminate within the gasket itself, thereby creating a barrier through which fluid and gas cannot migrate. The sealing ring element can be any elastomeric material, as well as more sophisticated spring-energized PTFE lip seals. As a result of this advanced seal design, maintenance-free flange isolation and flange face corrosion mitigation are achieved economically. Depending upon the sealing element selected, the PGE flange isolating gasket kit is rated for most hydrocarbon and water service applications.
This PGE flange isolating gasket kit is suitable for use in raised-face and flat-face flanges in ANSI Class 150, 300 and 600 service (or equivalent). In addition to providing electrical isolation, the gasket is excellent for isolating flanges made of dissimilar metals or where prevention of flange face corrosion is desired.
The PGE flange isolating gasket kit is a high-reliability, low-pressure sealing system. It provides excellent electrical isolation for cathodic protection systems and protects against flange face corrosion and flow-induced erosion. It is the superior sealing solution for low-pressure ANSI Class 150, 300 and up to 600 service, with low required bolt loads and easy installation, make-up and removal.
Patented overlapping and offsetting seal grooves break every laminate layer, creating a barrier through which fluid and gas cannot migrate.
Excellent electrical isolation for cathodic protection systems, dissimilar-metal flange isolation and flange face corrosion mitigation.
Near-zero creep relaxation makes the PGE kit perform well in heat exchangers, high-vibration and excessive thermal-cycling service.
Suitable for raised-face and flat-face flanges in ANSI Class 150, 300 and 600 service. Type E full-face and Type F ring styles.
The gasket core is the structural and dielectric backbone of the PGE kit. Two NEMA glass-reinforced epoxy grades are standard. The correct grade depends on the required operating temperature, compressive strength and dielectric strength.
For a specific heat analysis and dielectric test report, request the material certificate with your order. All values will be confirmed against the mill certificate before shipment.
The insulating sleeve electrically isolates the bolt from the flange. Mylar and Nomex are low-cost standard options; G7, G10 and G11 offer higher temperature and dielectric performance. Select the sleeve to match the flange service temperature and required dielectric strength.
| Sleeve Material | Dielectric Strength | Low Operating Temp | Max Operating Temp | Water Absorption |
|---|---|---|---|---|
| Mylar | 500 VPM | -59°C | 149°C | 0.8% |
| Nomex | 500 VPM | -54°C | 232°C | — |
| G7 | 350 VPM | -196°C | 232°C | 0.07% |
| G10 | 550 VPM | -128°C | 150°C | 0.1% |
| G11 | 550 VPM | -45°C | 202°C | 0.1% |
The insulating gasket washer isolates the nut face from the flange face. Mica offers the lowest water absorption and highest tensile strength combination. G10 offers the highest compressive strength. Phenolic is a low-cost general-purpose option. Select based on the mechanical load and the service environment.
| Washer Material | Dielectric Strength | Compressive Strength | Tensile Strength | Water Absorption |
|---|---|---|---|---|
| Phenolic | 500 VPM | 25,000 psi | 20,000 psi | 1.6% |
| Mica | 400 VPM | 30,000 psi | 32,000 psi | 0.01% |
| G7 | 350 VPM | 40,000 psi | 25,000 psi | 0.07% |
| G10 | 550 VPM | 65,000 psi | 50,000 psi | 0.1% |
| G11 | 550 VPM | 50,000 psi | 43,000 psi | 0.1% |
The steel washer sits on top of the insulating washer and carries the bolt load. The standard material is zinc-plated carbon steel. SS 304 or SS 316 is available for corrosive environments. For special applications, HCS with X37 coating can be supplied.
Default material for general hydrocarbon and water service. Zinc plating provides moderate corrosion protection for the steel washer.
Available on request for corrosive environments, offshore and marine service. Choose SS 316 for chloride-bearing service.
For special applications requiring higher hardness or additional corrosion resistance. Available on request with the flange specification.
The PGE flange isolating gasket kit is an excellent choice for isolating distribution lines and transport lines for gas, oil and water. Because the PGE kit has near-zero creep relaxation, it performs well in heat exchangers, applications with high vibration or excessive thermal cycling.
Cathodic protection isolation on gas transmission and distribution pipelines. Prevents stray current from reaching the pipeline.
Hydrocarbon pipeline flanges where electrical isolation and flange face corrosion protection are both required.
Water distribution and transport lines where the sealing element is selected for the water chemistry and operating temperature.
Shell and tube heat exchanger flanges where near-zero creep relaxation maintains bolt load through thermal cycling.
Compressor, pump and rotating equipment flanges where vibration would otherwise relax a standard gasket.
Flanges made of dissimilar metals where galvanic corrosion would occur without electrical isolation.
Send the following five items with your enquiry. If you already have a flange drawing or an existing gasket sample, attach it and we will match it directly. Our sales engineers reply with a firm unit price, lead time and available samples.
NPS, DN or specific inner and outer diameters for non-standard joints. Type E full-face or Type F ring style.
ANSI Class 150, 300 or 600 (or equivalent), plus the flange standard such as ASME B16.5 or EN 1092. Raised-face or flat-face.
Elastomeric material (e.g. Viton, EPDM, Buna-N) or spring-energized PTFE lip seal. Selected for the service medium and required dielectric strength.
NEMA G-10 or G-11 gasket core. Mylar, Nomex, G7, G10 or G11 insulating sleeves. Phenolic, Mica, G7, G10 or G11 insulating washers. Zinc-plated carbon steel, SS 304, SS 316 or HCS with X37 coating for steel washers.
Order quantity and destination port so we can quote FOB, CIF or freight-inclusive pricing. MOQ 10 pieces.
Send your flange standard, nominal pipe size, pressure class, Type E or Type F style, sealing element, gasket core, sleeve and washer materials and quantity. Our sales engineers reply with a firm unit price, lead time and available samples. For urgent pipeline, heat exchanger or cathodic protection requirements, contact us by phone or WhatsApp.
Address
No 432 Zhenhai Middle Road, Luotuo Street, Zhenhai District, Ningbo City, Zhejiang China
