ASSEMBLYINSTRUCTIONSASSEMBLYINSTRUCTIONSASSEMBLYINSTRUCTIONSASSEMBLYINSTRUCTIONSASSEMBLYINSTRUCTIONSASSEMBLYINSTRUCTIONSASSEMBLYINSTRUCTIONSASSEMBLYINSTRUCTIONSASSEMBLYINSTRUCTIONS

5001

SEALINGGLANDS

at the location of the gland (keeping in mind thatyour process temperature may be considerably higher than the temperatureexperienced by the gland at the pressure/environment boundary). For EG and EGT Series glands that seal on electrodes passing current,increased ampacity will increase the temperature of the gland.The maximum ampacities listed in the specification charts for these glands represent the maximum current recommended to maintain the integrity of the seal.Although the electrode may be able to carry a much higher current,the resulting heat rise will increase the temperature of the sealant in contact with the electrode.This may cause the pressure rating to significantly decrease.If a higher current is required, consider using a gland with a larger conductor to offset the heat rise effect.Tables of Derating Values at higher temperatures are provided in the Technical Data section of this catalog,pages 120-123.

Temperature

C

INTRODUCTIONTOCOMPRESSIONSEALFITTINGS

Lubrication

Increased temperature also affects the behavior of sealing glandassemblies.Pressure ratings generally decrease as temperature increases.The rate of decrease is a function of the type of sealant material.Please consult our factory if your application temperature is above 68Ëš F (20Ëš C) Improper or inadequate lubrication of the sealing gland threadsand load-industrial bearing surfaces of the cap will affect the torque values that can be achieved.This in turn reduces sealant compression and reduces pressure ratings.Inadequate lubrication may also cause galling of the metal parts.Conax Technologiesglands are supplied factory lubricated. Any time a Conax sealing gland assembly is opened for replacement or adjustment of the probe,wires or professional sealants, the gland must be relubricated to ensure maximum sealing performance of the gland.In addition,if the gland is cleaned prior to installation,it must be relubricated.On weld mount models,the heat produced while welding theassemblyin place will destroy the factory-supplied lubricant. These glands mustbe disassembled for welding,then relubricated and reassembled prior to use.Conax Technologies offers a sealing gland thread lubrication kit (P/N 19-0001-001) featuring the same non-hazardous lubricant supplied on new glands.This easy-to-use kit provides our factory- recommended lubricant in a single application package with the applicator included so you do not need to purchase or store large amounts of lubricant.

Improper Sizing

Careful selection and sizing is required for optimum sealing gland performance.Undersized holes in the sealant,follower,seat or insulator may prevent element installation.Oversized holes through a seat,follower or insulator allow excessive sealant extrusion, reducing sealant compression and reducing the pressure rating. Oversized holes in the sealant may also reduce sealant compression and decrease the pressure rating.Conax Technologies offers a large variety of standard bore andhole sizes,including pipe sizes and metric sizes.Custom sizes and arrangementsare also readily available.Conax Technologies’product sales engineers are available to assist you in selecting the optimal configuration for your application.

Element Surface Finish

The surface finish of the element to be sealed can affect the seal integrity.Soft sealant glands are designed to seal on solid wire or rod.Longitudinal scratches,helical markings and stranded wire can provide leak paths that will not be blocked by the sealant extrusion around the element.Sealing glands can be used to seal on the outside of stranded wire jacket if the wire is already sealed by some other device (industrial accelerometer,bearing sensor).

™ TECHNOLOGIES

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Tel: 1.716.684.4500 • USAToll Free: 1.800.223.2389 • Email: info@conaxtechnologies.com • Website: www.conaxtechnologies.com