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Custom Enclosures

CNC Machining

SERPAC can machine a wide range of openings for your specified geometry and recess any surface to accommodate your labels or membrane switches. We can also machine internal features, including the removal or shortening of circuit board bosses or card guides. Simply provide us with a drawing and we do the rest!

While there are no minimum quantities required, a set-up fee will be applied.

Lead time for machining orders is three weeks.

Guidelines to Specify Your Modifications by Machining:

  1. Dimension all geometry from center line
  2. Allow a 0.03" (0.8mm) radius for all inside-modified corners (additional charges will apply for a smaller radius)
  3. Machined recesses cannot be more than 80% of an enclosure's wall thickness
  4. Endless geometric options


Machined Serpac enclosures
Machining requirements
Moulding Customisation

All SERPAC enclosures are designed with customization in mind. Each enclosure has "Insert Areas" where a custom "I-Plate" can be made to your specification. Your modifications (characters, symbols, openings, and recesses) can be molded into the box, cutting down your machining costs and adding a custom look to you final product.

These I-Plates have a one time tooling charge and are owned by you, our customer. On some of our products we also have the ability to modify the height of internal bosses to accommodate your specific application.

Some surfaces where internal and external I-Plates exist can be recessed or raised to accommodate your components and or designs. (all H-Series models and other models. Please contact customer service for details)

No minimum order quantity required.

Lead time for I plate orders is five weeks.

Guidelines to Specify Your Molded-in Customizations:

  1. Please see each part number prints to locate the I-plate. These areas are the only areas that can be customized
    by molding. If you need modification in other
    surfaces/areas please see machining section above
  2. Dimension all geometry from center line.
  3. Text, company or product logo can be molded in any of
    the I-plate areas.
  4. Recesses cannot be more than 60% of an enclosure's
    wall thickness.
  5. Endless geometric options.
  6. Space between cutouts must be the thickness of the enclosure wall at minimum.
  7. I plates can be textured and non-textured. Textured
    I-plate have a texture like the rest of the enclosure for
    cosmetic purposes. A non-textured I-plate is smooth
    for labels or membrane switches.


Moulding customisation

All dimensions in mm

Avoid any wall section less than 1.52 mm.

Recess guidelines

On any through hole please allow +2° side draft.

hole draft

On any countersink or bezel allow 0.51 mm minimum wall at
bottom point of opening

countersink guideline
Avoid through holes oriented over internal bosses or gate locations.

Avoid trying to match texture without using a 0.25 x 0.76 mm border between textures.

Moulding notice

Custom Colours

In addition to our standard enclosure colours, SERPAC can also accommodate custom colour requirements, either in solid or opaque materials.

Custom Moulded Colours
To obtain a quotation on custom colours, send us a colour chip or specify a Pantone number along with model number, quantity and material.

Painted Colours
For lower quantity requirements (25+) we can paint the enclosures with high-quality UV-resistant two-component lacquers.


Custom Colours

Silk Screen Printing

Complete your product customising by having SERPAC print your company logo, graphics, instructions or other text directly onto the enclosure. Multiple color printing jobs are easily handled. An artwork file in (Adobe Illustrator, scaled 1:1) is required.

Minimum line thickness for artwork is 0.25 mm.

Silk Screen Printing
Shielded Enclosures

SERPAC enclosures can be customised to shield Electromagnetic Interference (EMI) and Radio Frequency Interference (RFI).

SERPAC offers two different methods for shielding:

Spray Method
Our most common method for custom orders is to spray the interior of the enclosure with a conductive paint. Enclosures can be sprayed with a nickel based paint. There are no minimum quantities required, but a set-up fee will be applied.

Some of our enclosures are available with spray shielding as standard see table below. Orders of a 1000 pieces or more will not incur a setup charge.

Molded Method
The second method for shielding is to mold enclosures in a conductive plastic (black only).

Shielded Enclosures
Range Standard Spray Shielded Enclosures
A-Series A27 (All other models custom order only)
C-Series C8 (All other models custom order only)
CA-Series Custom order only
CH-Series Custom order only
H-Series Custom order only
I-Series Custom order only
M-Series M6 (All other models custom order only)
RB-Series Custom order only
S-Series 110i, 111, 111i, 131, 131i, 151, 172, 191,
221, 231, 231i
(All other models custom order only)
SL-Series WM05S (All other models custom order only)
WM-Series Custom order only
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Last Updated 23-Jun-2015 © OKW Enclosures Ltd. SERPAC is the trademark of Serpac Electronic Enclosures, La Verne CA 91750 USA. All rights reserved.