PROTEK DELTA
Protek Delta isolation gaskets provide advanced, near–zero leakage performance for critical static sealing applications. The design integrates an elastomer sealing element fully captured within an electrically isolating retainer, creating a robust barrier between mating flanges and the process media.
DELTA SEALING ELEMENT
The sealing element is almost completely encapsulated, with only a minimal portion exposed to the service environment. This geometry produces a controlled confinement of the elastomer in a groove that is typically 95% volume filled, optimizing elastomer compression and minimizing stress relaxation.
DELTA APPLICATION
During bolt-up, the confined elastomer deforms to effectively fill the groove and sealing interface, generating a uniform, controlled contact pressure at the flange faces without requiring excessively high bolt loads. Lower required bolt stresses enable the use of reduced flange thicknesses and smaller bolting
STYLES TO FIT STANDARD FLANGES (CUSTOM STYLES AVAILABLE)
STYLES
Type E is a full-face isolation gasket, matching the flange outside diameter and incorporating accurately machined bolt holes. This configuration promotes positive gasket alignment during installation and helps prevent conductive debris from bridging across the flange faces. Type E gaskets are supplied in plain phenolic or Nitrile-coated phenolic, as well as various high-temperature formulations, with a typical nominal thickness of 1/8 in.
Type F isolation gaskets are sized to seal only on the raised-face area of the flange. Because bolt holes are omitted, the gasket outside diameter is slightly smaller than the bolt-circle inside diameter, which automatically centers the gasket during assembly. Type F designs are available in the same material options as Type E and are also commonly furnished in a 1/8 in nominal thickness
Type D isolation gaskets are engineered to locate directly within the ring groove of ring-type-joint flanges. They are produced from a medium-weave, fabric-reinforced phenolic laminate and dimensioned to ANSI standards, with options for both oval and octagonal configurations. High-pressure BX-style versions are also offered with working pressures up to 15,000 psi.
WASHER AND SLEEVES
SLEEVE MATERIALS:
- G10 GLASS EPOXIES
- MYLAR
- MINLON (MINERAL FILLED NYLON)
- NOMEX
- MICA
WASHER MATERIALS:
- MICARTA
- GLASS EPOXIES (G3, G7, G10, G11)
- HARDENED COATED STEEL
- MICA
- ANY COMMERCIALLY AVAILABLE MATERIAL
KIT PACKAGING
Protek Flange Isolation Gasket Kits are supplied as an individual unit, packaged in a rigid corrugated carton to maintain component integrity through handling and transport. Within the carton, isolating sleeves and isolating/metallic washers are segregated and supported by protecting materials to minimize damage.