APM Hexseal invented and patented pre-assembled
self-sealing fasteners designed to provide both fastening
and sealing integrity in a single unit. Our design features
a resilient O-ring held captive in a precision engineered
groove under the fastener head. This combination of
precise groove geometry and O-ring characteristics
results in an absolute seal regardless of surface finish,
while still providing full metal-to-metal contact.
Vibration-resistant and re-usable, SEELSKREWS®,
SEELBOLTS®, and SEELRIVETS® can withstand
internal/external pressures up to 20,000 psig/vacuum at
temperatures from -100°F to +500°F (-73°C to +260°C).
Made in the U.S.A., APM self-sealing & optional selflocking
fasteners are available in standard and metric
sizes in a wide choice of head and fastening types
including thread forming, and tamper-resistant. Typically,
they are furnished in stainless steel/with different finishes
or colors as may be required. All have pre mounted
silicone rubber O-rings. Other elastomeric materials are
also available to match and handle exposure to various
chemicals and solvents (see materials table 1 on page 5).
Consult factory for further information and pricing.
They represent a superior sealing alternative to
sealing compounds, tape, chemical coatings, and
deformable washers that attempt to seal the threadform.
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