Type E – Full Faced Gasket
Type F – Ring Gasket
Type D – Ring Joint
Single Washer Kit
Double Washer Kit
Top Hat Kit
DESCRIPTION
Insulating flange kits include: gaskets, and either insulating sleeves and washers or moulded one piece sleeve and washer – also called ‘top hats’.
These are available in kit form or individually.
APPLICATION(S)
Insulating flange kits are used to isolate and/or insulate one section of pipe from the other. Another important function is to act as a sealing element for what ever substance the pipeline is carrying.
TECHNICAL INFORMATION
Flange kits are available in the following materials:
| Gaskets | Insulating Sleeve | Insulating Washers | Top Hats |
|---|---|---|---|
| Nitrile, Neoprene, Phenolic, Epoxy Glass Durabala | Polyethylene Mylar Phenolic Epoxy Glass | Phenolic Epoxy Glass | Minlon |
Gasket’s come in 3 different ‘types’:
Type E – Full face Gaskets completely cover the flange face from flange bed to outside diameter. These are most commonly used on flat faced flanges.
Type F – Ring Gaskets are designed to sit inside the bold circle and are most commonly used with raised face flanges.
Type D – Ring Joint (RTJ) is an oval phenolic gasket designed to work specifically with RT J grooved flanges.
Washer kits also come in 3 options:
Single Washer – allows cathodic protection to reach nuts and bolts.
Double Washer – isolates nuts and bolts from both flanges.
Top Hats – easier to install and gives inspector a visual indication of sleeve usage. Not recommended for high pressure or large flanges that require high torque loads.
For pricing enquiries, please provide the following information:
– Nominal pipe size
– ANSI Class (or equivalent pressure rating)
– Gasket Type (Type D, E or F)
– Single or Double washer sets
– Sleeve material
– Quantity