Category Archives: Gaskets & Die Cuts

Web Seal fabricates custom gaskets and custom, precision die cuts such as insulators, spacers and washers for a wide range of industries. Steel-rule cutting is the most common die cut technique. Web Seal also offers lathe cut and waterjet cut sealing parts and kiss-cut parts along with laminating and slitting.

Web Seal works with your design and engineering team to meet your tolerance requirements and other specifications to ensure successful integration of your custom gasket or die-cut part into your application. We offer custom gaskets in sizes ranging from  0.25″ to 10 feet, from low-volume to high-volume runs or as single prototypes. 

 

 

server stand

Protect Your Electronics with Custom Enclosure Gaskets

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enclosure gaskets for electronics cage

To protect your sensitive electrical and electronic equipment, a high-performing gasket – designed to NEMA / IP standards and customized for your enclosure – is critical. With UL50/508 design and materials selected for your specific environmental conditions, you ensure a reliable, long-lasting, leak-tight seal with custom enclosure gaskets from Web Seal.

Servers, traffic control equipment, water treatment controls, and outdoor lighting are among the many areas where conditions can endanger components, create safety hazards, or reduce efficiency.

Enclosures, with doors, ports, and accessories, involve irregular mating surfaces that require careful selection of a seal technology to keep your products secure. Such enclosures may involve:

  • Semiconductors
  • Digital equipment
  • Manual, magnetic, and solid-state starters and controllers
  • Thermal, magnetic, and solid-state overload relays
  • Pushbutton stations, selector switches, and pilot lights
  • Control circuit switches and relays
  • Float, flow, pressure, and vacuum-operated switches
  • Resistors and rheostats, including those for heating and lighting, and motor generator fields
  • Proximity switches
  • Time-delay relays and switches
  • Control devices for industrial heating and lighting
  • Programmable controllers

Enclosure gaskets that safeguard your products from outside environmental elements can be designed for ingress protection against human interference, moisture absorption, gases, vapors, dirt, dust, and other particulates; to resist mildew, UV and ozone intrusion; and to shield against electromagnetic and radio frequency interference (EMI/RFI). Enclosure gaskets can also be designed to block out noise or other interference created by internal components.

A wide selection of materials is available from Web Seal including solid elastomers; thermoplastic elastomers; flexible cellular sponges and foams; O-rings, shaft seals, and special forms; composite gasketing; and coated fabrics.

Web Seal’s custom enclosure gaskets meet the following industry standards:

  • UL 157 – Standard for Safety of Gaskets and Seals
  • UL50 /UL50E – Enclosures for Electrical Equipment Standards
  • UL508A – Standard for Industrial Control Equipment/Panels
  • UL94 – Flammability Standards
  • NEMA – rating system of the National Electrical Manufacturers Association regarding types of environments in which electrical enclosures can use used and the ability of fixed enclosures to withstand certain environmental conditions
  • IEC – a rating that defines levels of protections against foreign objects entering electrical enclosures

From simple to complex geometry, and from miniature to extra-large sizes, Web Seal can provide the optimal custom enclosure gaskets for your specifications as well as rapid prototypes and material samples.

Gasket fabricated from Garlock Multi-Swell Style 3760

Sealing Low-Compressive Loads with Multi-Swell™ Style 3760

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The New Multi-Swell™ Style 3760 Gasketing Material

When you can’t get an effective seal because the compressive load on a gasket is too low, or because the flanges aren’t rigid enough to compress standard gasketing material in the areas between bolts, Web Seal recommends the new Multi-Swell Style 3760 gasketing material from Garlock.

Multi-Swell™ is a combination of aramid fibers with a unique rubber binder, producing a highly compressible material.  Aramid fibers are composed of lightweight, high-strength reinforcement polymers that provide great flexibility as well as resistance.  The Multi-Swell™ material, interacting with water or oil, creates a seal by causing the gasketing material to swell, thereby creating load.

Ideal for compressors, generators, pumps, fuel pumps, gear boxes, cast water flanges, transformers, access, and other covers, Multi-Swell™ minimizes waste and reduces maintenance.  It can help cut down on inventory, too, by replacing gaskets that swell in oil only.

Benefits of Multi-Swell Gasketing Material

There are a number of advantages in fabricating gaskets using Multi-Swell™ Style 3760 over standard elastomeric or cloth-inserted gaskets:

  • More compressible and seals with low loads
  • Handles much higher flange loads
  • Operates at much higher internal pressures
  • Does not weep, improving plant safety

Use in environments between -100˚F and 400˚F (continuous operation), with maximum pressure of 500 psi.

For NSF 61 requirements (drinking water), specify Multi-Swell™ 3760-U.

Web Seal can provide prototypes and custom fabricated parts from Multi-Swell™ Style 3760 for your specific applications.