121 Tech Drive
Sanford, FL 32771
(407) 322-4000
Fax: (407) 321-9700
www.hernon.com

ISO 9001:2008 Registered
High Performance Adhesives and Sealants

October 2012

Technical Data Sheet
Self Seeler 604

Page 1 of 2

Product Description

Product Benefits

Hernon Self Seeler 604 is a low viscosity, tough,
preapplied, non-hardening threaded sealant. When
dried, it becomes a resilient, tight clinging, non-curing
sealant for tapered or straight threads. It provides an
instant seal on different pipe threads and can be used up
to eight (8) times without recoating.

• The preapplied coating eliminates liquid and paste
migration problems and concerns during installation.

Self Seeler 604 is water based, non-toxic, safe and can
be applied easily without special handling precautions. It
contains a bacteria and fungus preservative to inhibit
growth of microorganisms. It also provides resistance to
vibrational loosening because of its prevailing torque
characteristics. It is very effective on non-locking
applications.

• Ideal for field assembly – precoated parts are always
there and ready for the task.

• Precoated fittings can be stored for immediate
delivery and assembly.
• The preapplied coating is tough, resilient and resists
shredding and peeling during assembly.

• Precoated parts have a shelf life of several years.

Typical Applications

UL Classification
Classified by Underwriters Laboratories Inc.
MH14222 as to fire hazard only. Self Seeler 604 is
Classified 0 to 10 less hazardous than paraffin oil in
respect to fire hazard. For use in devices handling
gasoline, petroleum oils, natural gas (pressure not over
100 psig), butane and propane, not exceeding 2 in. pipe
size. Suitable for single assembly ("insertion") use when
applied and dried prior to assembly in accordance with
the manufacturer’s instructions.

• Door Closure Hardware

• Pipe Fittings

• Compressor Pipe Plugs

• Shower Heads

Product Certification

• Plumbing Parts

• Bearing Adjuster Nuts

• Broken Fittings

• Overhead Fire Sprinklers

• Brake Fittings

•

Pressure Gauges

• Valves

Typical Properties
Property

Value

Chemical Type

Acrylic

Appearance

White

NSF International
Certified to ANSI/NSF Standard 61 for use in
commercial and residential potable water systems not
exceeding 82ºC (180ºF).

Viscosity @ 25ºC, cP

6000

Product Features

Specific gravity

Instant Seal ½ inch NPT fittings
Operating Temperature
On Part Life
Flash point

• No cure time is required.
The preapplied film
provides instant sealing for NPT threads up to 4
inches in diameter immediately upon installation

to 830 kPa (120 psi)
-55 to 150ºC (-65 to 300ºF)
4 years
1.21
Aqueous

Typical Performance

• Mechanically, the dry film generates prevailing torque
characteristics making threaded parts resistant to
vibrational loosening after installation.

Torque Strength
3/8” -16 nuts and bolts
Property

N•m (in-lb)

• Corrosion is inhibited between mating threads. The
threads are safely sealed from contact with the
atmosphere by the coating.

Seating Torque

40.7 (369)

Breakloose Torque

19.8 (175)

• Safe to use with plastics. It will not craze or attack
plastic components.

Prevailing Torque

2.4 (21)