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APM HEXSEAL. Since 1947... The world's most hostile environments are our proving grounds.

Custom Elastomeric Molding
    for Electrical & Electronics Sealing

Custom Dynamic Seals

Please contact APM for details on Custom Elastomeric Molding


External or Internal Interactive Sealing Solutions
APM's custom molded dynamic elastomeric seals are designed to transmit mechanical energy, either internally or externally applied, depending on your application and environmental challenges. They flex and move without degradation or sealing compromise. Static sealing solutions too – anything requiring either heat transfer or injection molding. Please submit your design requirements and we'll rapidly respond with a cost-effective solution and quote.

Features and Benefits:

  • Design assistance – prototype through production
  • Rapid prototype parts
  • In-house tooling and design – market entry tools and molding
  • Compression and transfer molding – dynamic seals
  • Low-Pressure injection overmolding
  • Rubber-to-metal bonding
  • Custom colors or transparent
  • EMI/RFI shielding available

Typical Applications:

  • Telecommunications
  • Automotive
  • Appliance
  • Computers for special dedicated applications
  • Medical electronic equipment
  • Marine, boating instruments and controls
  • Electrical instruments, gauges, etc.
  • Instruments and controls
  • Construction off-road equipment
  • Machine tool controls
  • Communications equipment
  • Food, chemical, pharmaceutical processing equipment
  • Hand-held tools and portable appliances
  • Sensors
  • Motors
  • Switches & circuit breakers
  • Fiber optic components
  • Connectors
  • Relays
  • Fuel cells
  • Ideal for any temperature sensitive and complex shapes
  • Plus any application requiring a dynamic or a static seal


  • Silicone
  • Fluorosilicone
  • Buna-N (Nitrile)
  • Neoprene
  • EPDM

About APM's Sealing Boots Division:
The Electronics Division of APM HEXSEAL develops and manufactures environmental protection sealing components for controls that are mounted on switches, potentiometers, encoders, and circuit breakers. Using advanced elastomer molding technology, a broad range of sealing boots are produced to match most controls manufactures’ standard part numbers. Most are IP66/68 ingress protection rated and UL Recognized as meeting applicable Canadian and USA enclosure protection standards.

About APM's Self-Sealing Fastener Division:
The APM line of high-pressure, reusable, self-sealing fasteners includes self-sealing screws, self-sealing nuts, self-sealing bolts, self-sealing rivets, and self-sealing washers, all designed to seal in/out air, water, lubricants and other liquid or gaseous contaminants. This sealing hardware is available in Imperial (inch) and metric sizes with various sealing material and thread-locking options, most of which are UL Recognized Components for Canada and the USA.

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Switch & Circuit Breaker Boots

Switch & Potentiometer Boots

IQ Series Boots

Circuit Breaker Boots

Custom Elastomeric Molding

Colorizing Lamp Filters

Self-Sealing Fasteners & Washers

SEELSKREW® Self-Sealing Screws

SEELBOLT® Self-Sealing Bolts

SEELNUT® Self-Sealing Nuts

SEELRIVET® Self-Sealing Rivets

SEELOC® WASHER Self-Sealing & Self-Locking Washers

Contact Us

Toll Free: 800.498.9034

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  HEXSEAL®, SEELSKREW®. SEELBOLT®, SEELNUT®, SEELRIVET®, SEELOC® are registered trademarks of APM Corp.  
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