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

Product Lines

Environmental Sealing Boots for Switches, Potentiometers & Other Rotating Devices
Proprietary design, reusable sealing boots for toggle, pushbutton, rocker and rotary-style panel-mounted switches. Dust-tight and watertight, UL and CSA models. Many products are designed to meet military specifications. Color-matched to your application requirements.

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Environmental Sealing Boots for Circuit Breakers
Patented, transparent rubber sealing boots for lever, toggle, rocker and pushbutton-actuated style circuit breakers. UL, CSA and designed to meet military specifications.

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Colorizing Incandescent Lamp Filters
Reusable, interchangeable colored silicone rubber filters for incandescent lamps. Won't crack, chip, peel, melt or fade. Rated to 575° F.

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Reusable High-Pressure, Self-Sealing Fasteners & Washers
Conventionally-installed, reusable screws, bolts and nuts (plus non-reusable rivets) which seal to 20,000+ psi. Design assures fastening integrity of intimate metal-to-metal contact. Compatible with all surface finishes. Self-sealing washer seals to 100psi.

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Custom Elastomeric Molding
Custom colors, special bushing/bezel sizes, other materials or a totally custom design. We would be pleased to review your application requirements and special needs.

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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

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