What is Form-in-Place (FIP)?

Form-in-Place gaskets are designed to replace conventional gaskets and o-rings, and involve dispensing conductive or non-conductive elastomers directly onto metal or plastic substrates. Conductive materials are typically applied to electronic components or devices for EMI and RFI shielding, and non-conductive materials are used for environmental sealing or bonding. The video below shows one of our CNC robots dispensing a FIP gasket onto a work piece.

Form-In-Place Gaskets

Form-in-Place Advantages

  • Less waste and greater cost savings. EMI and RF shielding materials can be expensive. There is significantly less material waste with FIP, and our dispensed form-in-place gaskets offer significant material cost savings when compared to conductive die cut gaskets. Since the form-in-place gaskets are dispensed directly on the work piece by the CNC robots, the material cost savings can be dramatic.
  • Shorter lead times. The automated FIP process speeds up production by eliminating the need for manual assembly of die cut or molded gaskets.
  • Many material combinations. With dozens of material to choose from, Form in Place gaskets are ideal solutions for countless applications. Conductive silicone rubber is available with a number of fillers, such as Ag/Al, Ag/Cu, Ag/glass, Ni/C, Ni/Al and Carbon black.
  • Excellent adhesion. FIP materials adhere to a range of substrates, including conductive and painted plastics, metals and metal alloys, and metallized surfaces. The RTV (Room temperature vulcanization) or UV (Ultraviolet) cured gasket bead naturally adheres directly to the work piece.
  • Greater precision and tighter tolerances. Form-in-place gaskets can be dispensed on intricate work pieces, including those with changes in elevation. Our CNC robots were developed to dispense precise form-in-place gasket beads on even the most complex work pieces. Gaskets requiring thin profiles, our robots easily dispense intricate shapes and/or changes in the Z-axis or elevation.

Form-in-Place Applications

Dispensed gaskets are perfect for use in many telecom, aerospace, industrial, high technology, medical equipment and military applications. Some specific applications for our form in place gaskets include the following:

  • Insulating electrical components
  • Joining dissimilar materials, like metal and plastic
  • Sealing joints
  • Shielding mobile phone base stations and telecom equipment from EMI and RF interference
  • Producing a large series of aluminum castings where both a low risk of galvanic corrosion and excellent shielding are required
  • Complying with MIL-A-46106A and FDA 177.2600 specifications

Form-in-Place Materials

We can create form-in-place gaskets using industry-leading products from Nolato Silikonteknik as well as our own WesLastomer™ Form-in-Place line.

Nolato Form-in-Place
Nolato’s products include non-conductive silicone rubber, conductive silicone rubber and it’s technologically advanced Trishield® line. Trishield is widely known for its unique, triangular gaskets, which features lower compression force, less material consumption, and increased PCB-area than other FIP gaskets. Trishield® Soft is the next generation of the Trishield line, requiring even less compression force while still providing the same level of shielding effectiveness.

WesLastomer™ Form-in-Place
These one-component, paste-like materials adhere to many types of substrates and are used mainly for bonding, sealing, glazing and electrical insulation, depending on the product.

  • AD120-0301 can be applied to vertical and overhead surfaces.
  • AD120-0309 is a low modulus/high elongation sealant and adhesive.
  • AD120-0404 is for general industrial sealing and bonding, and complies with MIL-A-46106A and FDA 177.2600 specifications.
  • AD120-0410 is polyether based, and is excellent for bonding dissimilar materials. Besides bonding to metal and plastics, it also adheres to mortar, granite, glass, slate, ceramic, fiberglass and wood.
  • AD120-0751 is an acid-cure, non-sag material that adheres to glass, vitrified surfaces, ceramic as well as plastics.

Contact us today to learn how you can cut material costs and production cycles with Form in Place technology.

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