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Oil circulation sights

SKU: 8620 Category:
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Technical Drawing

Product Details

Standard Elements Main dimensions Tightening torque Weight
Code Description d1 A B D d s [Nm] g
10851-EX HCFE.12-3/8-EX G 3/8 7.5 13 22.5 15 19 3÷5 4
10901-EX HCFE.15-1/2-EX G 1/2 10.5 16 26 19 22 4÷6 5
11001-EX HCFE.20-3/4-EX G 3/4 10.5 19.5 31.5 25 27 6÷8 8

Additional information

Accessories on request

Brass nut type GH. for fitting to reservoirs with wall thickness smaller than 5 mm.

ATEX directive compliance

The level indicators of the HCFE-EX series comply with Health and Safety Requirements intended in 94/9/EC ATEX European Directive (explosive atmospheres) for equipments in Group II, category 2GD.<BR>Level indicators have “kX” protection degree and can therefore be mounted in equipments protected by means of “immersion in liquid”, without lowering protection degree.<BR><STRONG>II 2 G D k T6</STRONG>, marked on the HCFE-EX level indicators, represents the identification according to ATEX directive.<BR>II: group of substances for which the product is suitable<BR>2: identification of the category<BR>G: identification of the type of explosive atmosphere (Gases or vapours)<BR>D: identification of the type of explosive atmosphere (Dust)<BR>k: protection degree by means of immersion in liquid<BR>IIB: explosive gases group (only for HCFE.20)<BR>T6: temperature class<BR>Ambient and/or fluid temperature: -30 ÷ +80°C<BR>The declaration of conformity to European Directives of this product is available and it is part of the product itself.

Flat packing ring

NBR synthetic rubber.


Transparent polyamide based (PA-T) technopolymer. Resistant to solvents, oils with additives, greases, acids and alkali. Avoid contact with alcohol or detergents containing alcohol.


For use with fluids containing special additives, please contact ELESA Sales Department.

Technical data

The tightening torque indicated in the table guarantees an optimal tightness, keeping the packing ring in the correct position.